The grass collector will not fill as it should if the cutting height is set too high. Follow the step-by-step guide for instructions.
The below steps are applicable to standard lawn mowers.
⚠️CAUTION: Do not set the cutting height too low. The blades can hit the ground if the surface of the lawn is not level.
The cutting height can be adjusted in multiple levels.
Move the cutting height lever to increase or decrease the cutting height.
Check that you have the correct cutting height for your grass, max 1/3 of the height.
Depending on your lawn mower, the cutting height lever design can vary: