1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 34Get this manual
MAINTENANCE
SUSPENSION
Do not ride vehicle with faulty suspensionLoose, worn or damaged suspension parts impair vehicle stability and controlCheck the action of the frontrear shock absorber by pushing down them several timesCheck the entire shock absorber assembly for leaks or damageReplace damaged components which cannot be repaired Tighten all nuts and bolts
SPARK ARRESTER CLEANING
Do not touch the exhaust components while the exhaust system is hot Perform this operation in well-ventilated area, free from fire hazardUse adequate eye protectionRemove the muffler lidStart the engine with the transmission in neutral, and purge accumulated carbon from the spark arrester system by momentarily revving up the engine several timesStop the engine and allow the exhaust system coolInstall the muffler lid