1999-2002 TRX400EX Fourtrax Service Manual, Page 146Get this manual
CRANKCASETRANSMISSIONCRANKSHAFT Removethe gasket and dowel pinsDOWEL PINS
TRANSMISSION
DISASSEMBLY
Separate the crankcase (page 11 -3)Pull the gearshift plate away from the shift drum and remove the gearshift spindle
Pull the shift fork shaft out of the left crankcase and shift forksRemovethe shift forks and shift drum