Lawn Mowers: specifications, types

- Lawnmower. Classic wheeled lawn mowers in the form of trolleys with two or four wheels. They can have different types of engines; there are both non-self-propelled and self-propelled models. Such units are intended mainly for flat areas of small and medium-sized areas - for example, for caring for a lawn in the courtyard of a private house or a lawn on a city street. At the same time, a lawn mower is in many ways more convenient than a manual trimmer (see below): it does not need to be “carried”, and the design often includes a special bag for collecting grass. On the other hand, traditional mowers are not well suited for tight spaces, uneven areas and tall grass.

— Trimmer. A hand-held garden tool, a kind of mechanized analogue of a scythe. Consists of a motor, a cutting attachment and a handle(s) mounted on one rod. The small width of the working attachment allows you to work even in narrow spaces where the lawn mower cannot pass; with one stroke of the trimmer you can capture a fairly wide strip of grass; and you can cut at any height—including vegetation that is too tall for traditional lawnmowers. In addition, a special fishing line is most often used as a cutting attachment in such devices, which is not afraid of collisions with hard objects (although there are also models with blade knives). The disadvantages of a trimmer are traditional for hand tools: you have to constantly carry the unit on yourself, which can be tiring...during long-term work; and the cutting height has to be adjusted “by eye” (the exception is models with rollers - see “Advanced”).

— Rider (mini tractor). A self-propelled machine that the operator rides on horseback; in essence, it is a smaller and simplified analogue of an agricultural tractor. Note that although riders and mini tractors are combined into one category here, they are still somewhat different units. So, in riders, the engine is usually located in the rear, and the mowing deck or other equipment is in the front; Thanks to this arrangement, the grass is not crushed by the wheels before cutting, and it also makes it possible to work in hard-to-reach places (for example, close to trees). And in general, riders are quite maneuverable and well suited for cramped conditions. Mini tractors, in turn, are not so agile, but they are more powerful, heavier and more passable; the engine in such units is located in the front, the mowing deck is located below, between the axles, and additional equipment (if the possibility of its use is provided at all) can be suspended from below instead of the deck, from the back and/or from the front, depending on the model. The common features of riders and mini tractors are, on the one hand, convenience and comfort during operation (some models can even be equipped with closed cabins), on the other hand, high cost, bulkiness and significant weight. So you should pay attention to this category only if you need a mower for large spaces - it is in such conditions that riders and mini tractors show their best side.

- Haymaker. A type of lawn mower with a reinforced design, designed to work primarily in “wild” conditions, outside manicured lawns - in meadows, long-uncultivated and heavily overgrown areas, etc. In fact, such units belong more to professional agricultural machinery than to lawn mowers in the traditional sense of the word. Most mowers have a distinctive appearance: the body is mounted on two large wheels, and the front part houses a scissor-type cutting system (see below). This design ensures maneuverability on uneven terrain and allows you to effectively cope with even thick stems, even bushes and young trees.

— Robotic lawnmower. The most automated type of lawn mower: in fact, it is enough to set such a machine a program, release it onto the site and press the start button - the robot will do the rest itself. The simplest models use movement along random routes and obstacle sensors; more advanced ones can use a full-fledged mapping system (see “Functions”) and even systems for “smart” recognition of grass height and “memorization” of the areas traversed. Robots are generally able to return to the charging station on their own; Some models may even include solar panels to save energy and increase autonomy. At the same time, the efficiency and productivity of such devices is low; in general, robotic mowers are designed mainly for regular maintenance of already “cultivated” lawns.

— Combisystem. Structurally, such lawn mowers are similar to trimmers: they are based on a rod on which the engine and attachment are mounted, and the tool must be held in your hands when working (in the classic mode of use, like a scythe). The main difference between combisystems is the ability to install a variety of different attachments, thanks to which the functionality is significantly expanded. In addition to standard options like a paddle blade or a line reel, models of this type are compatible with attachments for mowing hay, trimming branches, and even cultivators. Note that attachments can either be included in the standard equipment of the lawn mower or purchased separately. Combisystems are useful primarily for small but complex areas, where, on the one hand, there is no need to process a large area, and on the other hand, one has to deal with an abundance of tasks of a different nature.

- Hovercraft. A rather rare and specific type of lawn mower that uses the principle of an air cushion: when the engine is running, air is pumped under the sole, lifting the entire device above the ground. Such units are not self-propelled, but they are very easy to move: there is practically no friction when moving, and you can push the mower in any direction, not just back and forth. At the same time, the air cushion requires high engine power and is effective only on relatively flat surfaces; and the ability to adjust the height in such models is limited, which is why they are so rare.

The type of engine that drives the cutting tool of the lawn mower, and in self-propelled models, the device itself. At the moment, the following types of engines are used:

— Electric (mains). Mains powered motor. Its advantages are low noise level, low cost and ease of operation (no need to buy fuel and oil) and no emissions into the atmosphere. Among the shortcomings can be called a relatively small power and a short range, limited by the length of the power cord.

— Electric (battery). Electric motor powered by its own built-in battery. It has all the same advantages as a mains-powered motor; in addition, such devices are not limited in movement, since they do not require a network connection during operation. On the other hand, the battery life of battery lawn mowers rarely exceeds half an hour, the battery weighs a lot and takes a long time to charge, and the power of such devices is even lower than that of network ones (despite the fact that they are noticeably more expensive).

— Petrol. Gasoline internal combustion engine. The advantages of such engines, in comparison with electric ones, are independence from the mains connection and high power, which allows you to work with dense thick vegetation. On the other hand, gasoline engines are heavier, more expensive to run, require the purchase of fuel and lubricants, and emit exhaust gases into the...air.

— Diesel. A type of internal combustion engine. In terms of basic features, diesel engines are almost identical to those described above, but they also have their own characteristics. On the one hand, in such units it is easier to provide high power and good torque, so they are better suited for "heavy" tasks; and diesel fuel is cheaper than gasoline. On the other hand, diesel engines themselves are more expensive, heavier and more difficult to operate. Therefore, they are not particularly popular among lawn mowers, this option is found mainly in riders (see "Type"), where high power is more important than the mentioned disadvantages.

— Gas. A rare variety of internal combustion engines that use a propane-butane mixture of gas as fuel. Their advantages over gasoline units are economical consumption, high mowing performance, and a small amount of harmful emissions into the atmosphere. In addition, gas fuel reduces the load on the engine, which, in turn, prolongs its operational life. The reverse side of the coin is the need to fill the cylinder with liquefied hydrocarbon gases at specialized filling complexes or the frequent replacement of gas cartridges.

— Without engine(manual). Lawnmowers that are not equipped with any motors and use the muscular strength of the user — when working, it is necessary to push the device in front of you. The advantages of such a scheme are low cost (both the device itself and its operation), independence from fuel and electricity, and maximum environmental friendliness; disadvantages are the relatively low quality of work and the significant expenditure of physical strength.

The capture width provided by the unit, in other words, the width of the strip of land cultivated in one pass. In fact, this size corresponds to the width of the working nozzle.

The large working width is useful when processing large open spaces, as it allows you to finish the job in a small number of passes. On the other hand, for hard-to-reach places, relatively narrow tools are better suited, able to go where a wider unit will not fit. In addition, the width of the tool directly affects the weight and price.

In general, it makes sense to compare in terms of working width only units of the same type (see above). However, it is worth noting here that trimmers do not differ so much from each other — most models capture from 25 to 45 cm (and a wide processing band is provided by moving the nozzle from side to side). As for the other types, in the most modest models the capture width does not exceed 40 cm, in the heaviest and most powerful it can be 56 – 60 cm or even more(in mini tractors — up to 1.5 m).

The width (diameter) of the trimmer knife characterizes the size of the paddle knife (or saw blade). Such a nozzle has a smaller capture width than a fishing line, however, it allows you to mow more dense thickets, including shrubs.

The type of cutting system installed in the lawn mower, in other words, the design of the working element of the unit.

— Rotary. In such cutting systems, the working tool (usually a bladed knife or a reel of fishing line, see "Nozzles") rotates around a vertical axis. This design is standard used in trimmers (see "Type"). If we talk about conventional lawn mowers, then in them the rotor system allows you to achieve good performance, but the haircut is not as accurate as when using spindles (see below). This option is suitable for those who have to process fairly large spaces and do not want to spend a lot of time on it.

— Spindle. Such a cutting system includes a rotating horizontal drum of several blades and one fixed blade fixed under the drum close to it. The rotating blades grab the grass and pull it towards the fixed blade, then the grass is cut like scissors. Such systems are inferior to rotary in performance, but provide a good quality haircut. Thus, this option is best suited for those who prioritize the neat appearance of the lawn. In addition, spindle units are well suited for "finishing" grass cutting, after processing by rotary lawn mowers. It is also worth noting that cutting systems of this type are found in two types of lawn mowers: the simplest manual models without an engine and powerful gasoline devices designed for professional grass cutting in stadiums, golf courses, etc. In the first case, the spindle is the best option in terms of sim...plicity of design (“tying” the rotor to the wheels of a hand-held mower is much more difficult); in the second case, thanks to a powerful engine, good performance indicators are achieved (although such units cost accordingly).

— Scissor. A cutting system resembling a hair clipper enlarged several times. It consists of two serrated knives, one of which is stationary, and the other moves in a horizontal plane from side to side close to the first, thus cutting off the vegetation that has fallen between the teeth. "Scissors" do not work as accurately as "rotors" and even more so "spindles", but they are able to cope with dense tall vegetation and even thin trees. As a result, this option is very popular in mowers (see "Type"), but is almost never found in other varieties of lawn mowers.

The minimum cutting height provided by the lawnmower — that is, the smallest height of grass that can remain after the passage of the machine. It makes sense to pay attention to this indicator mainly in cases where the lawn is planned to be cut as short as possible. In addition, the lower the minimum height (with the same maximum), the wider the height adjustment range of this model.

The maximum cutting height that the lawn mower can achieve is the maximum height of grass that can be left after the machine has passed.

This parameter is relevant mainly for those cases when you want to leave the grass on the lawn relatively long. In addition, lawn mowers with high cutting heights have a wide range of mowing adjustments.

The number of cutting height settings provided by the lawn mower. The more such settings (with the same adjustment range) — the more accurately you can choose the mowing height. Note that in some robots (see "Type") this number reaches 30 or more with a range of 30 to 60 mm; in other words, you can select the height to the nearest millimetre.

The cutting height adjustment method provided in the machine.

— Synchronous. Adjustment carried out "in one movement" — as opposed to the manual described below. In traditional lawn mowers, it is usually carried out by a lever that changes the height of all wheels at the same time; in other units, not the wheels, but the cutting tool itself, can be adjusted in height. Anyway, synchronous adjustment is much more convenient than manual adjustment, and for some devices (for example, robots and riders, see "Type") this is generally the only technically possible option. However, in classic mowers, such a system complicates and increases the cost of construction.

— Manual. The meaning of this type of adjustment depends on the type of device. So, for trimmers, this is almost the only possible way by definition: in them, the cutting height is regulated by how high the operator holds the working nozzle. In lawn mowers, manual adjustment means that you need to separately adjust the height of each axle, and even each individual wheel. Such systems are simpler and cheaper than synchronous systems, but less convenient to use.

The highest angle of ascent or descent at which the mower maintains normal operation.

This parameter is indicated mainly for autonomous robotic mowers (see "Type") — it is for them that it is most relevant (in traditional models, everything depends mainly on whether the operator can keep the mower on the slope). In this case, the angle is indicated as a percentage, similar to how it is done on road signs: the number of percent corresponds to how many metres the terrain rises every 100 m of the road. For example, an angle of 25% means an ascent of 25 metres every 100 metres (or 25 cm every metre).

The most advanced modern robots are able to overcome slopes of 50% (that's about 30°) and even more. It is worth choosing according to this indicator, taking into account the characteristics of the area where the unit is planned to be operated: for example, for a flat lawn without ups and downs, you can not look at the permissible slope at all.

The area of the site for which the lawn mower is designed. It cannot be argued that this parameter is critical when choosing a device, these are only manufacturer's recommendations and are very conditional. However, they are more than justified and generally show the available front of work based on the heating of the motor, the capacity of the tank or battery, and other factors that affect the duration of work.

Possibility of work of a lawn-mower in the mode of a mulching.

Mulching is the chopping and automatic spreading of mowed grass over the site. This is one of the most convenient and at the same time practical methods of vegetation disposal. So, it does not need to be collected, and the resulting coating (mulch) performs a number of useful functions: it fertilizes the soil, reduces its heating and evaporation of moisture in hot weather, and also keeps the top layer loose.

Note that some lawn mowers allow you to use a nozzle purchased separately for mulching. However, such models are not included in this category: mulching in our catalog is indicated only for models that support this function out of the box.

Direction of ejection of grass cut by the lawnmower.

The main options for the direction of ejection are back or sideways; there are also models in which you can choose the direction. At the same time, we note that in classic units, the ejection back is almost always carried out into the bag(up to the point that when the bag is removed, the hole is automatically covered with a lid), but when the bag is ejected from the side, it may not be — this is convenient, for example, when mulching ( see above).

Also note that riders (see "Type") have their own specifics: in units with rear discharge, after removing the bag, it is necessary to install a special plug, and then the cut grass will simply remain under the deck. In some mini-tractors, a similar way of working (without a bag) is provided initially; it is also considered a rear ejection, although the grass does not flow backwards, but downwards.

A type of bag used in a lawn mower to collect grass clippings.

— Hard. Bags (containers) made of a hard material, usually plastic. Such a container is more convenient to unload than a soft one, it is more durable and reliable, but it weighs a little more.

— Soft. The advantages of soft fabric bags are primarily low weight and the ability to fold after hours, which can facilitate storage. In addition, the degree of fullness of such a bag can be controlled by eye without any special indicators. On the other hand, soft bags are very inconvenient to unload.

— Combined. Bags that combine soft and hard materials in construction; the upper part is usually made solid. This combination makes it easier to unload the bag and at the same time allows it to be rolled up quite compactly for storage.

— Is absent. The absence of a bag is characteristic of some varieties of mowing units — in particular, mowers and trimmers (see "Type"). In classic lawn mowers, it usually means that this model does not involve collecting grass — all cut vegetation remains on the ground. At the same time, most of these models have the function of mulching (see above), however, there are exceptions.

The volume of the grass clipping bag supplied with the lawn mower. Manufacturers select this volume depending on the power, performance and overall level of the unit, however, similar models may differ in this indicator. In such cases, it is worth considering that a larger bag takes longer to fill and needs to be unloaded less often, but it weighs more and takes up more space (even when empty). Mostly the difference in the volume of the bag is 5 liters and there are lawn mowers for 35, 40, 45, 50, 55, 60, 65, 70 and more liters.

Indicator indicating the degree of filling of the bag. The design and capabilities of such an indicator can be different: for example, in some models it only gives an overflow signal, in others it allows you to determine the amount of grass in the bag at any time. However, anyway, this function provides additional convenience: it allows you to evaluate the fullness without removing the bag and without interrupting work.

- Self-propelled. In self-propelled lawn mowers, the engine rotates not only the cutting tool, but also the wheels of the lawn mower; thus, the user does not need to push it in front of him - it is enough just to set and control the direction of movement. This is convenient, but such models are more expensive than non-self-propelled ones. This is due not only to the complexity of the design, but also to the fact that such devices require more powerful engines - after all, power must be divided between the cutting nozzle and the chassis. For the same reason, a self-propelled unit will be less productive and efficient than a non-self-propelled analogue of the same power. However, some types of lawn mowers are by definition self-propelled - in particular, these are heavy professional models that would be difficult to push with your hands, as well as mini tractor riders(see "Type").

- Height adjustable handle. Possibility of height adjustment of the lawn mower handle, which allows to optimally adjust the device to the height of the user. This feature is especially useful for short or, conversely, tall people - by default, lawn mower handles are made for medium height, and it would be inconvenient to work with the unit without height adjustment.

- Piano wheels. The lawn mower has special, so-called. caster wheels (similar to th...ose used, for example, in supermarket carts). These wheels automatically turn in the direction of movement of the device, which significantly reduces the turning radius of the lawn mower and increases its maneuverability. At the same time, it is worth noting that this design is usually used only for the front wheels, while the rear ones remain rigidly fixed to the axle. So moving such a structure sideways still does not work.

- Flushing fitting. The presence of a fitting in the lawn mower for connecting a garden hose; usually such a fitting is located on the deck and is designed for a standard connector used in hoses. In accordance with the name, this function allows you to rinse the deck and blade of the unit, removing grass residues and other contaminants from them: just connect the hose, turn on the working nozzle and give water. This is much more convenient than removing the deck and washer blade by hand - especially when it comes to a heavy professional mower or rider (see "Type").

- Cup holder. The presence of a cup holder in the design of the lawn mower - a specialized stand for glasses and relatively small bottles. Such a stand usually has a characteristic recess where a container with a drink for the operator is installed. Often, cupholders are made in pairs, they are placed on a separate panel between the tubes of the handle of the unit. There are coasters in traditional lawn mowers and riders (mini tractors).

Type of drive provided in the self-propelled lawnmower (see "Features"). This moment is indicated depending on which wheels the thrust from the engine is output to.

— Rear. The classic version used in the vast majority of self-propelled devices. Such popularity is due to a number of advantages. Firstly, the rear wheels are located behind the cutting system, and when moving, they ride on already cut grass. Secondly, the main part of the weight in classic design lawn mowers falls on the rear wheels; and if the bag is used at the rear of the machine, then the centre of gravity is even more shifted back. However it is believed that such devices are less manoeuvrable than front-wheel drive; however, in most cases, this moment is not decisive, in addition, the design often provides for various tricks that make it easier to turn.

— Front. It is believed that front-wheel drive gives the lawn mower better steering. And mini tractors of this design are also less likely to get stuck in streams, puddles and other similar places: a front-wheel drive unit can slip through a difficult section by inertia, so that the front wheels catch on hard ground, while a rear-wheel drive machine is more likely to “sit down” with the drive wheels in sticky earth. On the other hand, in general, this option is less suitable for lawn mowers than rear-wheel drive — primarily because the drive wheels have to move on uncut grass (the only exception is some riders in which the cutting system...is mounted in front of the machine). In addition, for reliable traction with the ground, the centre of gravity of the device must be shifted forward. This is especially difficult to achieve if a rear-mounted bag is used to collect grass: as it fills, the weight shifts from the front axle to the rear, which in some cases can lead to loss of traction. As a result, front-wheel drive is extremely rare, mostly in bagless models and/or with the engine shifted noticeably forward for proper weight distribution.

— Full. In this case, full means 4-wheel drive at once. Its main advantage is its excellent cross-country ability: the unit “clings to the ground” with all four wheels, and the likelihood that they will all get stuck at once is extremely low. In addition, the design may provide specific features that further increase cross-country ability — for example, a differential lock. On the other hand, all-wheel drive is expensive both in itself (due to the complexity of the design) and in operation (due to high fuel consumption). The only exceptions are small electric robotic mowers (see "Type"), but they are produced in relatively small numbers — most 4x4 models have gasoline engines and are manually controlled. In light of all this, it makes sense to pay attention to this option only when you have to work on a vast area with difficult terrain, with which a “single-drive” unit cannot cope normally. But buying an all-wheel drive model for a flat lawn in front of a private house is hardly justified.

The ability to change the speed of the self-propelled unit (see "Features"). In the absence of this function, you need to pay special attention to the maximum speed, since "non-adjustable" lawnmowers have, in fact, two modes — parking and full speed. But if there is an adjustment, you can adjust the speed of movement to the specifics of the situation. For example, slow motion will be the best mode for dense, long-term uncut grass (or if the operator for some reason cannot follow the mower quickly); and high speed will allow you to quickly cope with a large volume of relatively simple work.

The maximum travel speed of the self-propelled lawnmower (see "Features") during operation.

Other things being equal, a faster model spends less time on work, especially when it comes to simple tasks. On the other hand, fast movement requires appropriate engine power, which in turn affects weight, cost, and electricity/fuel consumption. In addition, if we are talking about a traditional design lawn mower, when choosing, you need to sensibly evaluate your ability to “keep up” with the device. However, such models rarely reach speeds above 7 km/h — this is a quick step that is not a problem for a more or less healthy person. In addition, self-propelled units often provide speed adjustment (see above). But riders (see "Type"), where the operator rides on the unit, can reach higher speeds — about 13 – 14 km/h.

Note also that for the same engine power, higher speed means less power at the working head. So if speed is not of particular importance, it is better not to make a margin for speed, but to take a relatively slow, but “high-torque” device.

The location of the engine on the trimmer bar. Most petrol trimmers and high powered electric trimmers are overhead motorized – given the latter's significant weight, this is the best option in terms of balance. In turn, for low-power electric trimmers, the motors are lightweight and can be located below — this arrangement allows you to significantly shorten the trimmer shaft and reduce power losses when transmitting rotation to the working tool. Thus, bottom-mounted trimmers are usually significantly lighter, but have less power, do not cope well with thick dense vegetation and are poorly suited for work in wet weather due to the risk of electric shock (the latter, however, applies to all electric lawn mowers regardless of type) .

There are also models whose engine is carried on the back like a backpack. The shoulder-mounted engine is a convenient way to reduce the strain on the operator's hands.

— Direct. In straight bar trimmers, the rotation from the engine is transmitted to the cutting tool using a straight rigid shaft. This design is considered optimal for medium to high power trimmers, although the straight stem shape may not be perfect in terms of ease of use.

— Curved. A curved rod may be more convenient to use than a straight one, however, such trimmers have low power due to the fact that the rotation from the engine to the working tool is transmitted to them using a thin metal cable — such a transmission is not designed for high loads.

The type of handle provided in the design of the trimmer or combisystem (see "Type").

The choice for this parameter depends primarily on the personal preferences of the user, however, there are also quite objective differences between different types. The types themselves can be:

— Bicycle. A handle in the form of a pair of characteristic "horns" on either side of the trimmer bar, reminiscent, in accordance with the name, of a bicycle handlebar. This design allows you to comfortably mow the grass and perform other similar work; it is good in that the user's hands are in the most natural position when holding the tool. In addition, we note that the handles are convenient for both right-handers and left-handers. The disadvantage of models with bicycle handles is the relatively large weight and dimensions, as well as poor suitability for cutting branches and other work "at height". However, in the case of trimmers, such a need arises extremely rarely (especially since there are specialized varieties of garden tools for this — brush cutters and pole saws). Therefore, it is this option that has received the greatest popularity in modern trimmers.

— Loop -shaped. The handle, which looks like a characteristic loop, usually in the shape of the letter D. The role of the second handle in such a tool is usually played by the back of the bar, and the trimmer controls are also located there....In general, this design is considered less convenient than a bicycle one: the user has to either hold the tool with the barbell to the side, or pull one hand back strongly. On the other hand, the loop-shaped handle gives good vertical manoeuvrability and allows you to work both at ground level and much higher, and you can easily change the height of the nozzle. As a result of all this, although this option is less popular than the “bike”, it is still quite common, mainly on relatively light and low-power trimmers.

The diameter of the fishing line supplied with the trimmer (more precisely, with a reel attachment, see "Tips").

In modern models, this parameter can be from 1 to 4 mm. At the same time, a thicker fishing line handles better with dense thickets, but it works rougher, the treated lawn is not particularly even, and for the effective operation of such a nozzle, a fairly powerful engine is needed. On the other hand, a fine line provides a clean and neat cut, but is not suitable for heavy vegetation and large stems. Thus, thick fishing line is usually equipped with powerful units designed for "launched" lawns with an abundance of thick stems. Thin, on the other hand, is found mainly in low-power electric trimmers with a lower engine location, designed for neat lawns with regularly cut grass.

We also recall that many trimmers have the ability to replace the standard reel with another one that differs in line thickness.

— Adjustment of an inclination of a bar. The ability to tilt the bar or the working head relative to the bar. The setting will come in handy for mowing grass in hard-to-reach places. Trimmers with this function are much more convenient to work under swings, benches and garden furniture. Also, by adjusting the inclination of the rod, you can adjust the grip of the trimmer to the height of the user.

- Telescopic rod. The possibility of increasing the length of the trimmer by lengthening the bar. Due to the design features, this solution is available only for models with a lower engine and helps to maximally adjust the device for a person of any height.

- Collapsible bar. The ability to disassemble the trimmer bar into several parts. This feature greatly simplifies storage and transport: it is easier to pack, carry and transport components folded side by side than a solid long rod. Theoretically, this design is less reliable than non-separable, however, trimmers are usually not subjected to such high loads that this is noticeable.

- Shoulder strap. Strap for carrying the trimmer on the shoulder - including during operation. This design significantly simplifies the operator's task and reduces fatigue: carrying on the shoulder is not as tiring as holding it in the hands of weight. Note that in models without a sho...ulder strap, it may be possible to purchase it separately; however, it is easier (and often cheaper) to buy a tool with this accessory right away.

— Restrictive bracket. The bracket acts as a limiter and is designed to protect high (necessary) vegetation from mowing. Those. you can put forward a small structural element at the base of the bar, which, approaching the bushes, will move them away, thereby not cutting them off. The bracket will also be appropriate when mowing a site with a fence, a decorative landscape with many elements that can be damaged during mowing, or they themselves can “shorten” the fishing line once again by breaking off its ends.

- Swivel head. Possibility of rotation of a working nozzle of a trimmer on a bar. Typically this function is used to change the cutting system from a horizontal position to a vertical position. Cutting in a vertical plane can be useful, for example, for leveling edges and forming borders on lawns.

- Edging roller. The roller is necessary for a neat "haircut" between the lawn and the sidewalk. It is found in models with a swivel head and is designed for more comfortable work. Since the device does not need to be suspended, it is much easier to frame flower beds, decorative elements on the lawn, borders, etc., relying on the roller.

- Support rollers. Special rollers mounted on the cutting head of the trimmer. Thanks to these rollers, you can rest the head on the ground and roll the tool in front of you - this is more convenient than carrying it "on yourself". Another advantage is that the rollers keep the working attachment at the same height, which means that mowing is as accurate as possible, almost like using a conventional lawn mower (with all the advantages of a trimmer). The main disadvantages of models with rollers are the high cost, as well as the increased weight, which makes it difficult to work “off the ground”.

Functions provided by the robotic lawnmower (see "Type").

— Scheduled mowing. The ability to set the schedule for the robot, according to which it should work. In the simplest models, the schedule is indicated within a day (for example, “from 8.00 to 8.30”), in more advanced units, a schedule may be provided by the days of the week or even by dates within a month. Anyway, this function makes life much easier for the user: instead of turning on the device manually every time, it is enough to set the schedule — and you can not worry about regular lawn mowing.

— Cartography system. The presence of a mapping system in the design of the robot. Such a system allows the device to compile a map of the area to be treated and then use it during operation — avoid obstacles in advance, avoid falling into holes, etc. The specific method of mapping may be different: some models do it on their own, focus on the boundary wire laid by the user (for details, see "Additional"), and in some models — also to data from sensors and the GPS module; in others, the user himself can set the work area and the route of movement (for example, through a mobile application). Anyway, the mapping system noticeably increases the efficiency of the robot: a correctly configured device passes the area entered in the memory without gaps and at the same time does not go beyond it. The main disadvantage of this feature is the rat...her high cost.

— Synchronization of control. The ability to synchronize the robotic mower with other home and garden equipment, combined into a "smart home" (or "smart garden") system. Such synchronization allows you to coordinate the work of various types of equipment: for example, so that the irrigation system turns on only after the robot mower has processed the entire lawn. Usually, only equipment from one manufacturer can fully synchronize with each other; For this, branded applications installed on a smartphone or tablet are most often used.

— Management from the Internet. The ability to control the robot via the Internet. To do this, the device connects to the World Wide Web using Wi-Fi, and the features and control functionality may be different. So, in some models you need to use a proprietary application installed on a smartphone or tablet, for others it is enough to open a special page in any Internet browser. However, anyway, this function allows you to access control from anywhere in the world where there is an Internet connection. This can be useful when away from home — for example, on vacation or on a business trip.

— Smartphone control. The function is similar to control from the Internet, with the only difference that the commands to the robotic lawnmower are given from the phone, which is connected via Bluetooth, and, accordingly, the range is limited.

The ability to control the operation of a robotic lawn mower from a smartphone or tablet, and in some implementations, even from a computer. Communication can be established via a wireless Bluetooth channel or via a Wi-Fi network. Features of this control may vary depending on the model of lawn mower. So, in some instances you need to use a proprietary mobile application, for others it is enough to open a special page in an Internet browser. In any case, this function allows you to remotely access the control of the robotic lawn mower using mobile devices. And via a Wi-Fi network, control can be carried out from any corner of the globe where there is Internet coverage. This will come in handy when you are away from home - for example, on vacation or on a business trip.

The maximum number of mowing areas that can be memorized by the robotic lawnmower (see "Type").

The meaning of having several mowing zones is that for each separate zone you can set your own mode of operation of the robot. For example, the grass in front of the entrance to the house can be cut every two or three days, maintaining its neat appearance, and the area behind the house, which is not so visible, can be processed once a week. Similarly, for different zones, you can set your own processing time — for example, during the day, “keep” the mower out of the area where children can play, and at night keep it away from the bedroom windows so that the noise does not disturb the sleepers.

In modern robotic mowers, the number of mowing zones usually does not exceed three — this is quite enough in most cases.

Additional sensors included in the design of the robotic lawnmower (see "Type").

— Strike. A sensor that reacts to blows to the body of the device. It is mainly used for fixing collisions and avoiding obstacles: when a collision occurs and the sensor is triggered, the robot changes its direction of movement, trying to bypass the object that triggered the trigger. Such an opportunity will be especially useful for models without a mapping system (see "Functions"), however, it can also be useful if there is a built-in map: after all, in addition to permanent obstacles, other, temporary ones (for example, garden furniture taken out into the yard ). In addition, on some models, data from the collision sensor can be used to correct the built-in map.

— Tilt. A sensor that detects the tilt of the body in one direction or another. Mainly used to prevent rollover: when the angle of inclination reaches critical values, the mower reverses or otherwise changes the driving mode in an attempt to prevent the increase in inclination. This function will be especially useful when used in areas with relatively difficult terrain, with ups and downs.

— Rise. A sensor that reacts to the rise of the body above the ground — for example, if the device was picked up. With such a rise, the mower blades are open, which is fraught with injuries; the sensor prevents this; when it is triggered, the knives automatically stop. And in some models, this function also plays the role...of “anti-theft”: when the case is lifted, an alarm may turn on, warning the owner of an attempted theft.

— Overturning. A sensor that reacts to the flip of the body upside down. The main task of such a sensor is to stop the rotating knives so that they do not injure people who approach the mower (for example, curious children). And some models, when rolled over, can even send a message to the owner, warning him about the incident "state of emergency" and the inability to continue driving.

— Rain. A sensor that reacts to rain — more precisely, to the ingress of moisture on the body of the device, and sometimes to the presence of water under it. Robotic mowers themselves are made moisture resistant, and the main meaning of such a sensor is that lawns are usually not mowed in the rain: wet grass creates excessive resistance to the knives, they can become clogged with wet ground — as a result, the quality of the haircut noticeably deteriorates, and the mower experiences abnormal loads. Usually, when the sensor is triggered, the robot stops working and returns to the charging station.

— Obstacles. A sensor that detects the presence of obstacles in the path of the device. Unlike the shock sensor described above, which performs a similar function, this sensor usually works on a non-contact principle — for example, ultrasonic or infrared. This allows you to reduce to an absolute minimum the likelihood of collisions with various obstacles, which is especially important if there are delicate objects in the cultivated area — for example, fragile garden sculptures.

Safety features included in the design of the robotic lawnmower (see "Type").

— Pin. Possibility to close access to the control of the mower using a digital pin code. Thus, only those who know the access code can turn on the device or change the settings. This can be useful both in case of theft (without knowing the “pin”, the robot becomes useless), and in case there are strangers on the territory. At the same time, the most critical functions, such as emergency shutdown, remain available without a code.

— Blocking. The ability to block the robot control in certain emergency situations. The specific features of the operation of this function may be different: for example, in some models, the lock is activated when installed on a “non-native” charging station, in others, when it leaves the working area (fixed by GPS coordinates), etc. Anyway this function prevents unauthorized use of the mower.

— Alarm. An alarm that warns the owner of an attempt to steal the mower, and in some models, other emergencies, such as a coup with wheels up. In the "anti-theft" format, such an alarm can be triggered, for example, according to data from the lift sensor (if the device is lifted and not lowered to the ground for a long time) or from the built-in GPS module (when leaving the working area). The simplest type of alarm is audible, but other notification methods can be provided, for example, sending a notification to the owner’...s smartphone.

— GPS tracker. A function that allows you to determine the current location of the mower and report it to the owner. The position, in accordance with the name, is determined by GPS data, and this information is usually transmitted via mobile networks — in the form of SMS or a notification in a special application. Other features of the operation of this function can also be different: for example, in some models it works automatically when you leave the working area, in others — at the request of the owner, in others, the position is monitored and broadcast constantly, etc. It used to be that the GPS tracker makes it much easier to find the device, not only in case of theft, but also in some other situations — for example, if the robot accidentally rolled down a steep slope that was not taken into account by the owner.

— Protection from children. Various features designed to protect young children from the dangers of the robotic mower. So, in some models, it is possible to block the control so that only an adult can access it; in others, shock and lift sensors automatically turn off the knives if a curious little child tries to play with the device, starts pushing it or turning it over. Specific protection features in each case should be clarified separately, however, anyway, this function is highly desirable if there are small children in the house.

- Bladed knife. A knife in the form of a pair of blades, rotating around a vertical axis in the manner of a propeller blade. Two blades are the most popular, almost standard option for rotary lawn mowers (see "Cutting System"). Note that in the case of trimmers, the use of a knife allows you to achieve higher productivity and better cope with thick grass than using a line reel. On the other hand, blades do not tolerate contact with stones and other hard objects very well; in case of such troubles, various tricks can be provided (for example, an automatic engine brake).

- Spindle knife. Nozzles used in spindle-type lawn mowers. For more information about such units, see "Cutting system", here we recall that spindle knives are inferior to bladed ones in terms of performance and efficiency in thick grass, however, they provide a "cleaner" cut, which allows you to give the lawn the most accurate appearance. So this option is well suited for regular cutting of relatively sparse, well-groomed vegetation.

- Reel with fishing line. Most often used in trimmers (see "Type"). According to the general principle of operation, it is similar to a bladed knife (see above), however, in this case, the working tool is not blades, but pieces of thick fishing line rotating at high speed. The main advantage of the fishing line over a bladed knife is its almost complete insens...itivity to collisions with stones and other solid objects: such a “blade” will only bend from impact and literally immediately straighten due to centrifugal force. True, such nozzles cope with thick stems somewhat worse, but in practice it all depends on the thickness of the fishing line (see above) and the speed of its rotation.

- Cultivator. Nozzle designed to loosen the soil. Outwardly, it is a set of gears mounted on a horizontal axis with teeth of a specific bent shape. Due to the rotation of these wheels, loosening is carried out. Combisystems are mainly equipped with such nozzles (see "Type"). At the same time, the width of the cultivator is usually small, it is poorly suited for full-fledged garden work, but it can be useful when processing a small flower bed or several beds.

- Saw blade. Attachment for cutting relatively thick, stiff stems (e.g. bushes or small tree branches). Mounted mainly on trimmers (see "Type"). Outwardly, such a nozzle is very similar to the working element of a circular saw: it uses a rotating rim with characteristic teeth along the edges. The rim may have holes - to reduce weight.

- Scissor mower. In this case, it means a special attachment, most often used in mowers (see "Type"). Such a nozzle has the form of a characteristic horizontal "comb" with two rows of teeth moving relative to each other. Its design is described in more detail in the “Cutting system - Scissor” section, here we note that hay trimmers are indispensable when working with dense vegetation and thick stems, they easily cope with thickets that are “too tough” for other attachments.

- Without nozzles. The absence of any nozzles in the regular configuration of the lawn mower. It is assumed that the customer will purchase them separately for specific needs.

Additional accessories included with the lawn mower. This point is mainly relevant for robotic mowers (see “Type”), they are most often equipped with the mentioned accessories, such as:

— Boundary wire. A wire designed to limit the working area of the robotic mower. Such a wire is laid along the perimeter of the work area (taking into account all permanent obstacles such as trees, flower beds, etc.) and is connected to the charging station in a special way. If everything is done correctly, when approaching the border of the site, the mower will change the direction of movement in such a way as not to go beyond the established perimeter - this is more convenient and safer than relying on collision, tilt sensors, etc. Note also that the absence of a wire in included in the kit may mean either the need to purchase it separately, or the fact that the mower, in principle, is not designed to use this function.

- Remote control. A remote control that allows you to control the robotic mower from a distance. Remote control is especially convenient during operation: the user does not need to chase a moving device, just press the desired button while at a fairly close distance. The operating principle of the remote controls may be different (infrared, radio), but they all have a range of at least several meters.

— Charger (charger). Device for charging batteries used in lawnmowers wit...h appropriate power supply. For models supplied with such a device, the charger model may be further specified in the specifications. This information can be useful not only for finding a spare or replacement charger, but also in case the household has other cordless tools and/or batteries for them. The fact is that many manufacturers nowadays use universal batteries that are compatible with a whole set of tools from the same brand; so, for example, the included charger for a mower may be quite suitable for a cordless saw from the same manufacturer.
On the other hand, the package may not contain a charger at all. This option will be optimal primarily if a compatible memory device is already available, and there is simply no need to overpay for a second device. In addition, the absence of a charger will be appreciated by those who want to choose this accessory separately, without relying on the manufacturer’s decision.


Please note that the above list is not complete - other additional items may be included in the kit.

Scheme of operation of an internal combustion engine installed on a lawn mower. Note that this division is relevant only for gasoline engines (see "Engine type") — diesel engines are extremely rare and are made only four-stroke.

— 2-stroke. The main advantages of two-stroke engines over four-stroke ones are the simplicity of the device and higher power with the same working volume, due to which such units are lighter, more compact and cheaper. On the other hand, they consume more fuel and are distinguished by a high level of noise, and such an engine needs to be filled with a mixture of gasoline and oil in the correct proportion, which complicates maintenance somewhat (there are separate refueling systems, but they are complex and expensive, which is why they are almost never used ). As a result, this option is found mainly among trimmers (see "Type"): it is there that small dimensions and weight are decisive, and the required power and fuel consumption are relatively low.

— 4-stroke. Engines of this type are somewhat more complicated and more expensive than two-stroke ones; in addition, to achieve the same power, they need more volume, which affects the size and weight. On the other hand, if the engine does not need to be "carried in the hands" (as is the case with trimmers), these points do not really matter; and the difference in price, thanks to the development of technology, is becoming less and less noticeable. With a...ll this, four-stroke engines are quieter and consume less fuel. As a result, almost all units where a relatively large and heavy internal combustion engine can be installed are equipped with this particular type of engine. And relatively recently, light and compact engines have appeared, suitable even for trimmers.

Model of the engine installed in the lawn mower. The main performance data of the engine is usually indicated in the general data for the unit. However, knowing the exact name of the motor, you can find more detailed information on it — from specific data to reviews and reviews. Also, data on the engine model can be useful when searching for spare parts or consumables.

The size of the engine installed in the petrol or diesel model (see "Engine type"). Power directly depends on this indicator, however, only engines of the same type can be compared by volume (see "Type of internal combustion engine"). And even in the same type of units of the same power, the volume can be different. In such cases, note that a larger volume means more fuel consumption, but the engine itself may cost less than a smaller one.

The maximum speed that the engine in an electric mower can run at (see "Engine type").

It makes sense to compare according to this indicator only engines of the same power. In general, higher rpm improves performance but reduces torque. Conversely, a relatively slow engine will be inferior to a “fast” one in overall speed, but it will better cope with dense dense vegetation. So it’s worth choosing by engine speed, taking into account what is more important to you — speed or efficiency in difficult conditions.

Lawnmower engine power expressed in horsepower. The common unit of power these days is the watt, but gasoline and diesel engines (see "Engine Type") are traditionally referred to as hp. Some units are easy to convert to others: 1 hp. approximately equal to 735 watts.

In general, the more powerful the engine, the more performant the mower is and the better it handles with heavy work such as cutting thick grass, bushes, etc. On the other hand, high power has a corresponding effect on fuel consumption, as well as the weight and price of the engine. In addition, it should be taken into account that different types of mowers (see "Type") differ in terms of power requirements. For example, among trimmers there are many models with a capacity of 0.7 – 1.3 hp., for gasoline lawn mowers, the minimum power is already in the range of 1.3 – 2 hp., and for mowers, at least 2.5 hp is required. . So you can only compare units of the same type in terms of power. Detailed recommendations for choosing a mower depending on its type and features of the planned work can be found in special sources.

Lawnmower engine power expressed in watts. This designation is used absolutely for all electric models (see "Engine type"), and it is also often found in gasoline and diesel units along with horsepower (these units are clearly related, 1 hp is about 735 watts).

In general, the more powerful the engine, the more performant the mower and the better it will cope with heavy work such as cutting thick grass, bushes, etc. On the other hand, high power has a corresponding effect on fuel / electricity consumption, as well as the weight and price of the engine. In addition, note that the power requirements depend on the type of mower itself and its engine (see above for both). For example, for most robots, the power does not exceed 500 W — more, taking into account specialization, is not required, besides, otherwise the devices would turn out to be too bulky and heavy. Trimmers and lawn mowers of similar power are only electric, and the power limit for power tools is 2500 – 3000 W when powered from the mains and 1500 – 2000 W for battery models. But in gasoline tools, the minimum power is about 500 – 1000 W for trimmers and 1000 – 1500 W for mowers; the maximum value can exceed 4 kW.

Detailed recommendations for choosing a lawn mower d...epending on its type and features of the planned work can be found in special sources.

Fuel consumption of the mower's petrol or diesel engine (see "Engine type"). Usually, the characteristics indicate a certain average value, in the standard mode of operation; the actual consumption may differ in one direction or another, depending on the features of operation. Nevertheless, this indicator quite accurately characterizes the "voracity" of the engine as a whole.

More power usually means more fuel consumption, but engines with similar performance can differ in fuel consumption. And here it is worth bearing in mind that a more economical unit is likely to cost more, but this difference pays off by reducing consumption. Also note that knowing this indicator and the capacity of the tank (see below), you can determine the approximate operating time on a single refill.

The volume of the fuel tank in a gasoline or diesel mower (see "Engine type").

A large tank allows you to work longer without refueling, but an excessive increase in capacity affects the dimensions and weight of the entire unit. So manufacturers usually select this indicator taking into account the power and fuel consumption of a particular engine, and in general, the volume of the tank is not critical when choosing. However, knowing the tank capacity and fuel consumption (see above), you can estimate how much one refueling will approximately last.

The presence of a brushless (brushless) motor in the device. Such electric motors have a number of advantages over traditional collector motors: in particular, they are more economical in terms of energy consumption, less noisy, and also do not spark. The disadvantages of brushless motors are complexity and high cost.

The presence of an electric starter in a gasoline or diesel lawnmower engine (see "Engine type")

Such a system is an electric motor powered by a separate battery. It greatly simplifies the starting procedure: no need to pull the cord or turn the handle — the rotation of the shaft necessary for starting is provided by an electric motor. In essence, the user only needs to press a button. On the other hand, electric starters are rather heavy, bulky and expensive, and the battery can be discharged during long-term storage. Therefore, this function is found mainly in high power motors, which would be difficult to start manually.

The presence of a soft start system in the lawn mower engine.

The design features of electric motors are such that when power is applied directly, the start occurs very abruptly — both in a mechanical and electrical sense. Firstly, the engine itself spins up in a jerk, in a very short time, which increases the wear of its parts. Secondly, at the moment of start-up, there is a sharp jump in current strength, which creates significant loads on the power grid (or the batteries of the unit). The soft start system eliminates these phenomena: it limits the starting current, allowing the motor to accelerate smoothly and preventing voltage surges.

On the other hand, additional electronic circuits affect the cost, sometimes quite significantly. So there are few models with this feature nowadays, and you should pay attention to them mainly in cases where the mentioned advantages are of fundamental importance — for example, if the device is purchased for a house with weak wiring that does not tolerate voltage surges.

Features of the battery-powered lawn mower (see "Engine type"). Most modern models of this type are initially equipped with one battery, but there are exceptions. They are indicated in this case, the options can be as follows:

- Without battery. This option is intended primarily for tech who do not want to rely on the choice of the manufacturer and would like to choose a lawn mower battery of their own choice. Theoretically, this may be associated with additional troubles, however, in practice, batteries are often sold literally "next to" the tools - on the nearest rack or in the next section of the online store. In addition, many brands make batteries universal - for example, a battery from a drill can be put in an electric trimmer. So such equipment will also come in handy for tech who already have a cordless tool on the farm - the main thing is to clarify compatibility before buying.

— 2 pieces in a set. Includes two replaceable batteries. The most obvious advantage of this configuration is the increased battery life: when the charge is exhausted, it is enough to change the dead battery for a fresh one. However, in addition to this, this option provides other advantages. So, it allows you to reduce interruptions for charging: one of the batteries can be charged at a time when the second is used for work. In addition, even if one battery fails, the s...econd will remain operational; and the probability of simultaneous failure of both batteries is extremely low (and definitely lower than that of a single battery). On the other hand, you will have to pay extra for a second power source - although often its cost is less than if a spare battery was purchased separately.

The name of the battery platform supported by the device. A single battery platform is used to combine various power tools of the same brand (drill, grinder, saw, etc.) into one line. Devices on the same platform use interchangeable batteries and chargers. Thanks to this, for example, there is no need to select a battery for each individual model of a power tool, because one purchased as a spare battery can be used in various power tools, depending on the situation or as needed. Batteries of the same platform basically differ from each other except perhaps in capacity.

Nominal voltage of the battery used in the unit with the corresponding engine type (see above). Theoretically, a higher voltage allows you to achieve more power, but in fact there is no direct relationship between these points. In addition, manufacturers choose batteries to deliver the intended power, rotational speed, and other performance. Therefore, in the selection and normal use of the unit, this parameter has a secondary, reference value; it may be needed mainly for some specific tasks, for example, searching for a spare battery or a “non-native” charger, or comparing different batteries by capacity (see below).

Nominal capacity of the battery, nominally installed in the unit of the corresponding design (see "Engine type").

In general, the higher this indicator, the more energy the battery can store and the longer it can power the electric motor. At the same time, we recall that the actual battery life of the lawn mower will depend not only on the characteristics of the battery, but also on the power consumption of the unit — and this, in turn, is determined by the engine power, nozzle type, operating mode, grass density, etc. In addition , capacity is usually specified in ampere-hours; and the features of these units of measurement are such that only batteries with the same nominal voltage can be compared by them (see above).

Thus, the battery capacity when choosing is more of a reference and advertising parameter than practically significant, and only models with similar performance characteristics can be compared by it. To assess the actual battery life, it is better to pay attention to the operating time directly stated in the characteristics (see below).

The model of a standard battery allows you to find out its characteristics in more detail, and also helps you understand what devices it is like and which one should be purchased in case of a replacement due to a malfunction or, if necessary, buy another similar one.

The name of the battery that is compatible with the device. It helps to buy a spare or find a suitable one in case of a breakdown of the main one.

The operating time of a battery-powered device (see "Motor type") on a single battery charge.

This indicator allows, to a certain extent, to assess the battery life of the unit. However note that the characteristics usually indicate the operating time under certain conditions, usually very favorable: low load on the nozzle, low and constant engine speed, etc. Therefore, in fact, battery life may differ from the claimed one — usually in a smaller direction, but vice versa is also possible. Nevertheless, according to the claimed operating time, it is quite possible to compare different models of cordless tools: the difference in official characteristics usually corresponds to the difference in actual battery life.

Time to fully (from 0 to 100%) charge the battery in the mower of the corresponding type (see "Engine type").

In general, a larger battery and takes longer to charge, but manufacturers can use various technologies that reduce charging time. So batteries of similar capacity can differ markedly in this indicator; of course, the faster option will cost more, but sometimes saving time is more important.

The presence in the battery device of an additional connector for the battery. This solution allows you to extend the operation of the lawn mower, because when the first battery is dead, power begins to flow from the second. Do not confuse this feature with the operation of two batteries, because. in this case, only one works, the second serves as support and waits for its turn.

The device is powered by two batteries at once.

For battery models in general, see above. And this feature means that due to its high power characteristics, a single standard battery is not enough for a lawn mower.

The presence of an indicator in the device that displays the current battery level. The design and functionality of such an indicator may be different, often the simplest LED indicators are used, allowing only an approximate estimate of the remaining energy. Also note that the indicator can be placed not on the case, but on the battery itself. Nevertheless, this feature anyway provides additional convenience, makes it easier to monitor the state of the battery and reduces the risk of being left with a “dead” battery at the wrong time.

The material from which the deck is made is a protective casing that covers the cutting tool of a lawn mower or trimmer. In modern mowers there are such options:

— Plastic. The cheapest and at the same time the least durable material.

— Aluminium alloy. The most advanced option: these decks are durable, lightweight and less prone to corrosion, but quite expensive.

— Steel. It has greater strength than aluminium alloy and costs less, but is heavier and more prone to corrosion.

The lawnmower has moisture protection and is rated according to the IP (Ingress Protection) standard. The first number after the abbreviation IP corresponds to protection against dust (maximum 6), the second indicates the degree of protection against water (maximum 8). A higher value is considered more advanced. The maximum degree of protection according to this standard is IP68, that is, complete sealing, but lawn mowers do not provide such serious moisture protection. Often the matter is limited to protection from splashes and rain. There are also IPX4 markings where the first digit is not written - this means that the lawn mower has not been officially certified for dust resistance, but is protected from moisture.

The diameter of the front wheels of the unit. For more information about this parameter, see "Rear wheel diameter" — everything written there is true in this case. We only note that the front wheels relatively rarely have their own drive, so the diameter for them is not as important as for the rear ones.

The diameter of the rear wheels of the unit.

Larger wheels, on the one hand, increase cross-country ability and allow you to effectively overcome pits, bumps and other obstacles on rough terrain. On the other hand, they cost more, are more expensive, and in self-propelled models, they also require more traction from the engine.

This indicator is often determined by the type of lawn mower (see above). So, mowers and riders, by definition, have large wheels, because they are designed for difficult terrain, and in a minitractor, the wheels must also withstand a fairly significant weight. But robotic lawn mowers, on the contrary, are used mainly on flat surfaces with low grass, and they do not need large wheels.

If you have to choose among classic lawn mowers, where this parameter can be different, you should proceed from the planned working conditions. So, if we are talking about a flat lawn — you can not pay much attention to this indicator; but for rough terrain with pits, tubercles, ditches, etc., you should choose larger wheels — from 25 cm or more.

The level of noise produced by the device during operation. Usually, a certain average indicator is indicated in the characteristics — in the standard mode of operation; however, the actual values usually do not differ much from the claimed ones.

The lower the noise level, the more convenient the unit to use and the less tired the operator. In the case of lawn mowers, this is especially true, since such equipment is quite noisy — even the quietest models (some robots) give out about 47 – 48 dB, which is comparable to talking at an average volume. Note that the decibel is a non-linear quantity, and it is easiest to evaluate the actual loudness using comparative tables. Here is the simplest table for the values found in modern lawn mowers:

— 60 – 65 dB — talking in raised tones at a distance of about 1 m;
70 dB — loud conversation of several people at the same distance;
75 dB — loud laughter at a distance of 1 m;
80 dB — motorcycle engine, medium power vacuum cleaner.
90 dB — loud screams, freight car at a distance of 7 – 10 m;
100 dB — a subway train or a loud car signal at a distance of 5 – 7 m, an industrial workshop;
110 dB — tractor engine at a distance of about 1 m.

In addition to subjective sensations, there are specific sanitary standards that limit the impact of strong noise. So, according to European standards, noise of 85 dB is allowed to be heard without protective equipment for 8 hours, 91 dB — 2 hours, 97...dB — half an hour, and 103 dB — only 7 minutes. So when choosing a unit, you should take into account the duration of work with it — with high noise, you may need protective headphones.