Yamaha YZ125 Owner's Manual

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CLUTCH5-2EAM30113CHECKING THE CLUTCH BOSS1. Check:• Clutch boss splinesDamage/pitting/wear  Replace the clutchboss.TIPPitting on the clutch boss splines will cause er-ratic clutch operation.EAM30114CHECKING THE PRESSURE PLATE1. Check:• Pressure plateCrack/damage  Replace.EAM30115CHECKING THE PUSH LEVER SHAFT1. Check:• Push lever shaft “1”Wear/damage  Replace.EAM30484CHECKING THE PUSH RODS1. Check:• Push rod 1 “1”• Bearing “2”• Washer “3”• Push rod 2 “4”• Ball “5”Cracks/damage/wear  Replace.2. Measure:• Push rod 2 bending limitOut of specification  Replace.EAM30117CHECKING THE PRIMARY DRIVE GEAR1. Check:• Primary drive gearDamage/wear  Replace the primary driveand primary driven gears as a set.Excessive noise during operation  Replacethe primary drive and primary driven gears asa set.2. Check:• Primary-drive-gear-to-primary-driven-gearfree playFree play exists  Replace the primary driveand primary driven gears as a set.EAM30118CHECKING THE PRIMARY DRIVEN GEAR1. Check:• Primary driven gearDamage/wear  Replace the primary driveand primary driven gears as a set.Excessive noise during operation  Replacethe primary drive and primary driven gears asa set.EAM30121INSTALLING THE CLUTCH1. Install:• Push lever shaft “1”TIPApply the lithium-soap-based grease on the oilseal lip.G088995Push rod bending limit0.30 mm (0.012 in)