720 Flywheel Slipped

[smokef16]

My flywheel slipped on my '95 XP about a quarter of an inch down the magneto. Anyone heard of this? I think it's from vibrations, since my motor seems loose on the mounts. The flywheel actually rubbed on the motor side of the case. Should I try to push it back, or get a new flywheel/mag assembly? Any other causes? Thanks, Joe

[Riixxii]

Re: 720 Flywheel Slipped

The taper of the crank and flywheel along with the woodruff key hold everything in place. If the flywheel is now rubbing on the case, I would think that you have major damage. Seen a 700 Yamaha this summer with same symptoms and the motor was an entire loss.

[John Kubiak]

Re: 720 Flywheel Slipped

Did the flywheel slip, or has the starter ring gear moved towards the edge of the flywheel. This is a common issue with this engine design.

[seadoohx]

Re: 720 Flywheel Slipped

i have a 720 hx flywheel housing/ stator/ flywheel. all out of clean ski
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lhrncir@aol.com

[hydro X]

Re: 720 Flywheel Slipped

Good idea to check crank run out aswell.

[smokef16]

Re: 720 Flywheel Slipped

Did the flywheel slip, or has the starter ring gear moved towards the edge of the flywheel. This is a common issue with this engine design.

This reply is for John Kubiak. Yes, the starter ring gear moved towards the end of the flywheel. I think I caught it early enough to prevent any other damage. If this is a common problem, please fill me in. Thanks, Joe

[John Kubiak]

Re: 720 Flywheel Slipped

This post, although it is about a Sea-Doo jet boat, applies directly to your problem:


http://www.sbtontheweb.com/forum/sho...9973#post79973

[smokef16]

Re: 720 Flywheel Slipped

Awesome, John. Thanks for the insight. I'm going to use some other loctite product that seals cylinder sleeves into the cylinders while I press the starter gear back on. I'll also use a punch to make it permanent. Who would have thought this kind of thing would happen? At least we figured it out. Thanks again, Joe

[John Kubiak]

Re: 720 Flywheel Slipped

Still, it is a much better outcome than others suggested!:emoticonc