I have a JD L120 riding mower and last year, it started to act up and die after I started cutting my lawn. this continued, like it would just loose power and not atart back up, after it got hot. I have cut the grass a few times this year and same prblem started up again. Now I can't get it to start at all. The engine cranks, but will not turn over. new battery, trcikle charged when not using, new plugs. no difference. Tried to jump w/ my car, still will not turn over. BS 20 hp model 406777, type 0139 E1, code 040226YG

This one is driving me nuts. Now, I'll readily admit I pulled this thing out of the trash. Well, not trash, but it was curb-side with a sign on it that said "FREE!". It's an MTD 38" cut with a B&S 12.5 HP engine. I used it all last season. It starts and runs great. I had to put a muffler on it, which I did on the cheap with a big-box store universal muffler and a piece of black pipe (so it's a little loud). The problem with it is that the blades don't stop turning. When I pull the blade control back to the STOP position, they're still turning. Not with as much vigor as when they are fully engaged, but enough to put a hurtin on you. It seems to be a really simple arrangement. There's no idler pulley or anything. Just a belt that goes from the engine crankshaft to the blades. It appears to me as if when you drop the deck, that puts enough tension on the belt to drive the blades. When you put the deck up, the belt gets loose and the blades should stop. They don't. The belt gets loose, but they keep spinning. Is it as simple as a new belt? If it helps, the model number is 13AH660F000.