2001 Yamaha YFM660 Raptor Factory Service Manual, Page 242Get this manual
CRANKCASE CRANKCASE TIMING CHAIN AND SPEED SENSOR ROTOR
Job namePart name Removing the timing chain and speed sensor rotor Engine assembly Cylinder head cover Cylinder head Cylinder and piston AC rotor Clutch, balancer drive gear and balancer driven gear Oil pump Shift shaft and shift drum segment Timing chain guide (intake) Timing chain