It is a fairly easy job, but cleaning the old gasket off is honestly the hardest, most time-consuming part of the job. I recently did mine, and it took about 5-hrs from gathering tools to ready-to-ride.
I'll impart some lessons learned... hopefully they will help you:
- That cover is really on there... took a lot of patience to NOT use the bigger hammer or start prying.
- Starter gears... watch-out.. they jump off their shaft when you're not looking And make sure they are back (correctly) before you re-assemble.
- Using a 2x4 across the top of the crank casing (above the stator), and a small gear puller, catching two points of the stator, lifted it out beautifully... Took less than 30-sec to break it free / pull it out.
- Gasket cleaning sucks!! I think the factory actually melts the gasket into place during assembly... (don't use anything sharp like a knife to "dig" the gasket loose, you'll gouge the housing... patience, a plastic putty knife, and some gasket solvent will go a long way)
- A dab of gasket seal here and there helps hold that new one in place when trying to re-assemble.
- It works better if the two guide tubes are on the same side as the gasket when assembling... so if you have one on the cover, and one on the engine side... carefully move one of them. It makes life easier!
- Number your bolts as you remove them! After removing the clutch slave cylinder, I pulled bolts from the crank cover, starting at the top-center, moving clockwise. I numbered the bolt's shaft with a sharpie, and made a tick-mark on the bolt hole at clock-time to correspond to the # on the bolt... an old trick I learned from my father which is most helpful when changing crank bearings so you get the same bolts in the same holes.
- Change your oil VERY soon after replacing the stator... just in case you get any gasket debris inside the engine... plus your bike will thoroughly enjoy FRESH OIL