Quote:
Originally Posted by porsche930dude
Intresting i dont think iv ever seen a riding mower shear a key and iv fixed hundreds if not thousands. They just dont get the direct shock that a push mower blade does. But the flywheels are huge so certainly possible. If the push mowers are running bad at all its a no brainer I check the key and they are usually sheared.
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Both of my walk behind mowers have symptoms of sheared keys, kick back when trying to start them, not running smooth or knocking sounds so yeah. I took the cover and recoil off of the Toro this morning and could see that the crankshaft and flywheel were off a bit, didn't have time to remove the flywheel before heading to work so I will work on that throughout the week.
With the riding mower, not long after I got it I was mulching leaves and hit a root which stopped it cold and snapped the pto cable, replaced the cable and all was good. A couple of years ago I hit that concrete that was in the ground and bent one of the blades and cracked a spindle. I replaced the blades and both spindles at the time and all was good, until now. I guess things got a little misaligned back when I hit the root all those years ago and has just gotten worse each time I accidentally hit something else. I also noticed after hitting that root, the engine started leaking oil a little bit making a grimey dirty mess under the mower and this could be caused by the engine timing being off a bit from a partially sheared flywheel key. I'll get it all back together this weekend and will see how it all goes.
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