Could be just about anything. Have you got all the debris out of the engine flywheel? It could be the keepers on the pull string. Does all of the bolts line up right on the mower?
You're welcome. The flywheel is not messed up. Is it hard to pull? Or can you even pull it? It works like a set of gears kind of. When you pull it the little keepers get a hold of that gear and they turn it. When you let go, the gears have a curved edge to let the flywheel release. It's kind of hard to explain. It would be better if I could draw it. If its rubbing against something then something is broke. Maybe the bolt that holds the rope in is loose. Try and make sure all of that is right. If you can't pull it at all then your cable could be broke. Thanks Dustythanks for the reply. It looks like everything is clear and the bolt holes line up. The little plastic prongs that come out when the cord is pulled seem to be what's catching on the inside of the piece they fit into. I can see the marks they're making and hear the click when they're extended and hit the inside of it. I'm not sure how the whole thing works, but it seems like they should turn that piece which would turn the fly wheel. But I can't manually turn any of it, so maybe it's not the cord - maybe the fly wheel is burned out.???
Oops - I just went out and released the brake on the fly wheel and it does turn by hand. Back to square one.
Your cable might be broke then. The cable that you use to turn it on and off. Its hard to turn if you can turn it at all then it could be the cable.Thanks again. The cord is definitely not broken - I can see it. When the whole piece is off the mower I can pull the cord its full length, but when I put it back in place, it'll pull a few inches and gets caught up on something. I think the little plastic things aren't able to get the gear moving so they prevent the cord from pulling any farther, so maybe it is in the fly wheel. When I turn the fly wheel by hand, it moves about a half rotation and stops - like there's something in place to keep it from going all the way around. I'll look around the fly wheel again to see if I can find anything jamming it, but I don't think that's the problem - the cord would pull farther out if that was the case. I'll fiddle some more and get back to you.