Yamaha SR400 2014 Service Manual

CLUTCH5-31EAS25070REMOVING THE CLUTCH1. Loosen:• Primary drive gear nut “1”TIPInsert aluminum plate “a” between the primarydrive gear “2” and clutch housing “3”, and loosenthe primary drive gear nut.2. Remove:• Pressure plate “1”TIPRemove the clutch spring by loosening theclutch spring bolt in a crisscross pattern.3. Loosen:• Clutch boss nut “1”TIPWhile holding the clutch boss “3” with the univer-sal clutch holder “2”, loosen the clutch boss nut.EAS25100CHECKING THE FRICTION PLATESThe following procedure applies to all of the fric-tion plates.1. Check:• Friction plateDamage/wear  Replace the friction platesas a set.2. Measure:• Friction plate thicknessOut of specification  Replace the frictionplates as a set.TIPMeasure the friction plate at four places.EAS25111CHECKING THE CLUTCH PLATESThe following procedure applies to all of theclutch plates.1. Check:• Clutch plateDamage  Replace the clutch plates as aset.2. Measure:• Clutch plate warpage(with a surface plate and thickness gauge “1”)Out of specification  Replace the clutchplates as a set.Universal clutch holder90890-04086Universal clutch holderYM-910421 23 a1 Friction plate thickness2.74–2.86 mm (0.108–0.113 in)Wear limit2.50 mm (0.098 in)123