It’s for flywheel to cover clearance... odds are you have a flywheel weight on your bike...

From the impeller side.

That needs to come completely apart there is way too much rust in that engine (I can’t imagine what the main bearings or the big end rod bearing looks like) Also I doubt with that much damage to your piston your bore is in good shape...

Update no longer need a head

Definitely interested... if you can send me some photos at ppitzonkajr@gmail.com or text me at seven 1 six 3 four 1 9 six 9 9

Case splitter, Steering wheel puller, or a harmonic balancer puller May work... if not I’m sure there’s a cheap universal flywheel puller on eBay or amazon that would work fine...

I bought the solutions and chemicals from caswell, then bought a nice power supply... Best advice I can give you is make sure the bolts are clean... It can be a bit of a pain until you figure out the process... I wire wheel the bolts, acid dip them, ... more »

Zinc Plating works great for restoring/ coating bolts... it is a time consuming process, but I have plated many bolts and parts with great results... however, it would still be a cheaper and faster route to purchase an aftermarket bolt kit...

Find a service manual they list specs for testing resistance and peak voltage of a stator... you need a good multi-meter, and if you want to check peak voltage you need an adapter (if you’re electrically savvy you can make one relatively cheap and save ... more »

You’d be surprised...

In the transmission... yes that will work fine

Same size just poorer quality bearing...

matched cases are line bored/ honed as an assembled set... taking out any small problems that may occur during the casting process... however the casting process has come a long way (core shift has become almost non existent) and modern machining tolerance ... more »

It should be under the clutch Fiche... look at 2000 model and a 2001 model you should notice a difference 2000 utilizes a collar like the one in the photo; 01 utilizes a Thin splined thrust washer... easiest way You would be able to verify is look at ... more »

Don’t know the year of your engine but that looks like the collar that sits between the primary gear and the main bearing on the early 2000 models

The idea behind it is to improve airflow...the mesh wire screen is there to prevent your filter from catching fire in case of a backfire...