2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 335Get this manual
CRANKCASETRANSMISSIONCRANKSHAFTBALANCER (After '05) Make sure the shift fork identification marksThe left shift fork has an "EYL" mark, the center shift fork has "CP1" mark and the right shift fork has an "RP1" markFace the shift fork marks as follows:Left shift fork mark to the left crankcaseCenter and right shift fork marks to the right crankcase "EYL" "CP1" "RP1"
Apply molybdenum oil solution to the claws and guide pins of the left, center and right shift forksInstall the shift forks to the grooves in the sliding gearsApply oil to the shift drum guide grooves and install it into the left crankcaseInstall the shift fork guide pins into the shift drum guide groovesApply molybdenum oil solution to the shift fork shafts and install them through the shift forks and into the left crankcaseAssemble the crankcase halves (page 16-25)