2008-2010 Kawasaki KFX450R Factory Service Manual, Page 263Get this manual
CRANKSHAFTTRANSMISSION 9-15 Crankcase
the pin [A] to the idle Setthe left crankcase halfgear shaft [B], and install them to
Install: [A] Washer
Needle Bearing [B]
Install: Idle Gear [A] Reverse