1999-2002 TRX400EX Fourtrax Service Manual, Page 149Get this manual
CRANKCASETRANSMISSIONCRANKSHAFT MAINSHAFT SNAP RING THRUST WASHER
M3 GEAR (19T)
SNAP RING SPLINE WASHER GEAR (22T)
M2 GEAR (16T) M5 GEAR (26TI M5 GEAR BUSHING WASHER AND SNAP RING DIRECTION:
M' GEAR BUSHING THRUST WASHER