Checking The Clutch Springs; Checking The Clutch Housing - Yamaha YZF-R1B 2012 Service Manual

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a. Assembly width adjusted by clutch plate "1"
and "2".
b. Select the clutch plate from the following
table.
Clutch plate "1"
Part No.
4B1-16324-00
5VY-16325-00
4B1-16325-00
Clutch plate "2"
Part No.
5VY-16325-00
4B1-16325-00
TIP
When adjusting the clutch assembly width [by
replacing the clutch plate(s)], be sure to
replace the clutch plate "1" fast.
After replacing the clutch plate "1", if specifica-
tions cannot be met, replace the clutch plate
"2".
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email: info@motomatrix.co.uk
Thickness
1.6 mm (0.063 in)
2.0 mm (0.079 in) STD
2.3 mm (0.091 in)
Thickness
2.0 mm (0.079 in) STD
2.3 mm (0.091 in)
EAS25140

CHECKING THE CLUTCH SPRINGS

The following procedure applies to all of the
clutch springs.
1. Check:
• Clutch spring
Damage → Replace the clutch springs as
a set.
2. Measure:
• Clutch spring free length "a"
Out of specification → Replace the clutch
springs as a set.
Clutch spring free length
43.80 mm (1.72 in)
Limit
41.61 mm (1.64 in)
EAS25150

CHECKING THE CLUTCH HOUSING

1. Check:
• Clutch housing dogs
Damage/pitting/wear → Deburr the clutch
housing dogs or replace the clutch hous-
ing.
TIP
Pitting on the clutch housing dogs will cause
erratic clutch operation.
2. Check:
• Bearing
Damage/wear → Replace the bearing
and clutch housing.
5-64
CLUTCH