flywheel nut.

[barker]

I have my doubts that the flywheel would spin around the crank. once i cleaned up the shaft a bit and got a proper key (local Yamaha dealer gave me a key that was too small....) the flywheel went on very tight. I tapped it on with a rubber mallet and even without the nut on i couldn't budge it. hopefully that and the amount of locktite I put on the nut will keep everything together. hitting the sand tomorrow so fingers crossed that she holds up.

[Rotax Raptor]

That key is for timing alignment only. It's not intended to keep the flywheel in place. My PVL ignition doesn't even have a key way in the flywheel. Getting it tight on the clean tapered shaft is the ticket.

[AKheathen]

That key is for timing alignment only. It's not intended to keep the flywheel in place. My PVL ignition doesn't even have a key way in the flywheel. Getting it tight on the clean tapered shaft is the ticket.

exactly...........if the flywheel is loose at all, it will most likely sheer the key, or the chattering will weld the taper. if you are lucky, like most, it just sheers the key, or spins the nut off, but there is always that 20-30% chance it will weld, and either you won't get it off later, or it will pull some of the crank with it.