Great to take a chance to teach a kid something.
My last semi-major foray into fixing things was keeping an old mower that the wife had had running. It was well into bailing wire and bubble gum, but I could take apart the carb and wire together the loose gas tank fitting and clean the sprockets and keep it running. It finally seemed to quit, and I went inside and ordered one from Home Depot, a nice 22" walk Toro with folding handles, apparently "reconditioned" for $260.
In the mean time, I went back and "fixed" the old mower and finished the yard. The new one arrived in a couple of days and I nearly sent it back but I thought I'd mow the grass once first. It already had grass stains, so someone had already returned it. Man, was it much easier to mow with, so I kept it and figured I'd use the old one for brush, finally gave it away to someone at a garage sale.
The daughter has the Toro now. That was a pretty nice mower for that price.