1985-1986 Honda ATC250R Shop Manual, Page 34Get this manual
MAINTENANCE ADJUSTE NUT Perform minor adjustments with the upper adjusterLoosen the lock nut and turn the adjusterTighten the lock nutPerform major adjustments with the lower adjusterLoosen the lock nut and turn the adjuster nutTighten the lock nutCheck the clutch operation
LOCK NUT
UPPER ADJUSTER
LOCK NUT
SPARK ARRESTER (U.S.Aonly)
Do not remove or install the muffler lid while the exhaust pipe is hot Perform this operation in well-ventilated area, free from fire hazard Use adequate eye protectionRemove the muffler lidBlock the end of the muf fler with shop towelStart the engine and rev it up about 20 times to blow accumulated carbon deposits out the muffler