2001 Yamaha YFM660 Raptor Factory Service Manual, Page 246Get this manual
CRANKCASE ENG
SEPARATING THE CRANKCASE 1.Separate: Left crankcase Right crankcase
Separation steps: Remove the crankcase boltsNOTE: Loosen each bolt 14 of turn at time and after all the bolts are loosened, remove themLoosen the bolts in stages, using crisscross pattern Left crankcase Right crankcase
the right crankcase