Yamaha YZ250 2021 Owner's Manual

TROUBLESHOOTING7-6EAM30510TROUBLESHOOTING OF CLUTCHManual clutchSymptom Possible cause ActionsClutch slippageImproperly assembled clutch Reassemble the clutch.Improperly adjusted clutch cable Adjust the clutch lever free play.Loose clutch spring Tighten the clutch spring bolts tothe specified torque.Fatigued clutch spring Replace the clutch springs as aset.Warped pressure plate Replace the pressure plate.Worn friction plate Replace the friction plates as aset.Warped or worn clutch plate Replace the clutch plates as a set.Incorrect oil level Adjust the engine oil level to thespecified level.Incorrect oil viscosity (low) Change to recommended engineoil.Deteriorated oil Change to recommended engineoil.Clutch dragsFaulty clutch spring Replace the clutch springs as aset.Warped pressure plate Replace the pressure plate.Swollen friction plate Replace the friction plates as aset.Warped clutch plate Replace the clutch plates as a set.Bent pull rod (outer pull type) Replace the pull rod.Worn pull rod tooth (outer pulltype) Replace the pull rod and pull levershaft as a set.Bent push rod (inner push type) Replace the push rod.Damaged or worn clutch boss Replace the clutch boss.Seized clutch housing bushing Replace the clutch housing.Improperly installed pull lever Align the match mark on the pulllever before installation.Incorrect oil level Adjust the engine oil level to thespecified level.Incorrect oil viscosity (high) Change to recommended engineoil.Deteriorated oil Change to recommended engineoil.