Bag volume
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.
Full bag indicator
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.
Speed adjustment
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.
Engine size
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.
Electric starter
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.
