2008-2010 Kawasaki KFX450R Factory Service Manual, Page 259Get this manual
CRANKSHAFTTRANSMISSION 9-11 Crankcase
Remove:Bearing [A] Needle
Washer [B] Idle Gear shaft [C]
CAUTION
Do not remove the bearings and the oil seals unless it is necessaryRemoval may damage them
Crankcase Assembly CAUTION
Right and left crankcase halves are machined at the factory in the assembled state, so if replaced, they must be replaced as setfrom Remove the old gasketclean the mating surfaces of the crankcase halves and them off with high-flash