2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 289Get this manual
CLUTCHSTARTER CLUTCHKICK STARTERGEARSHIFT LINKAGE (After '05) Install the plunger springs, plungers and ratchet pawls into the drum shifter, and set them into the guide plateGUIDE PLATE RATCHET PAWL
DRUM SHIFTER
SPRING Install the guide platedrum shifter assembly withthe "UP" mark facing up and tighten the two bolts securelyInstall the shifter collar onto the drum shifter