2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 71Get this manual
MAINTENANCE Minor adjustments are made with the upper adjusterSlide the rubber boot off the adjusterLoosen the lock nut, turn the adjuster as required and tighten the lock nutInstall the rubber boot securelyLOCK NUT
Major adjustments are made with the adjusterRemove the fuel tank (page 3-9)