One can easily adjust the handle on a Greenworks 20-Inch 40V Twin Force Cordless Lawn Mower, which has a lever on the top of the mower. However, it might be a little problem to move the lever upwards, increasing the cutting height. It can be seen that it worked quite well if you lift it to the body of the mower, but remember to remove the batteries before doing that else. Your hands would be in danger.