WooHoo! I managed to convince J to cut the grass for me! Ok, I had to pay him, but still, it's one job I don't have to do in the heat :)
One thing I did do for him was clean out the blade area. Last time I cut the grass the blade sounded seriously wobbly and the motor had a hard time. When I turned the mower on its side I saw that the cavity the blade sits in was caked with grass clippings. An inch or so of clippings in some places, plus a lot of mold. Luckily I don't have allergies so it didn't bother me to chip it all off with a butter knife.
Considering that it was J's second time doing the lawn he did a pretty good job :)