[daprotege5]

So 1st gear broke so I took the case apart. Flywheel was a pita to take off. But my question is flywheel has some grooves inside and on crank, did someone use lapping compound on it?? Also do I need to replace the starter gear on the flywheel like on the 660??

 

[daprotege5]

key in their looks fine. Would I just install like normal than??

 

[daprotege5]

Gotcha. Will do I have files in the arsenal of tools. Kinda weird how the flywheel doesn’t have anything to tighten it down just gets pressed in place. Man was it a bitch to take out.

 

[daprotege5]

It's not weird...it's a 'taper lock'.
The nut just draws it into place, and remains as a safety. It is an interference fit, as once in position on the shaft, the i.d of the flywheel and o.d of the shaft are very close in actual size.
This is why you need a puller tool, and why there is a sudden pop when it releases.
It is a very good design.
Be very careful with a flat file on a round surface, and that is a hardened shaft that material will not easily be removed from.
Take your time so you don't put flat spots in it.

I have a couple sets of files around. My dad did machining work when I was younger so tools are a plenty in this house.

 

[daprotege5]

My one way is spinning both directions when I turn by hand. Would the burn marks on the gear have anything to do with that??