Yamaha YZF-R1 2007 Service Manual

CLUTCH5-49Clutch plate “2”NOTE:When adjusting the clutch assembly width [byreplacing the clutch plate(s)], be sure toreplace the clutch plate “1” fast.After replacing the clutch plate “1”, if specifica-tions cannot be met, replace the clutch plate“2”.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS25140CHECKING THE CLUTCH SPRINGSThe following procedure applies to all of theclutch springs.1. Check:• Clutch springDamage → Replace the clutch springs as aset.2. Measure:• Clutch spring free length “a”Out of specification → Replace the clutchsprings as a set.EAS25150CHECKING THE CLUTCH HOUSING1. Check:• Clutch housing dogsDamage/pitting/wear → Deburr the clutchhousing dogs or replace the clutch hous-ing.NOTE:Pitting on the clutch housing dogs will causeerratic clutch operation.2. Check:• BearingDamage/wear → Replace the bearing andclutch housing.EAS25160CHECKING THE CLUTCH BOSS1. Check:• Clutch boss splinesDamage/pitting/wear → Replace the clutchboss.NOTE:Pitting on the clutch boss splines will causeerratic clutch operation.2. Check:• Clutch bossCracks/damage → Replace.Part No. Thickness5VY-16325-00 2.0 mm (0.079 in) STD4B1-16325-00 2.3 mm (0.091 in)Clutch spring free length43.80 mm (1.72 in)Limit41.61 mm (1.64 in)Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk