Drain the engine oil. See the Oil Change section of the
Service Manual for instruction on how to do this. Disconnect
the rear brake lever from the rear master cylinder by
removing the cotter pin and pulling the shaft out. This will
allow rotating the rear brake lever out of the way to allow
removing the right engine case.
Loosen the handlebar clutch lever cable adjustor by screwing
it all the way into the clutch lever casting.