Checking The Clutch Boss; Checking The Pressure Plate; Checking The Primary Drive Gear; Checking The Primary Driven Gear - Yamaha YZF-R1(B) 2012 Service Manual

EAS25160

CHECKING THE CLUTCH BOSS

1. Check:
• Clutch boss splines
Damage/pitting/wear → Replace the
clutch boss.
TIP
Pitting on the clutch boss splines will cause
erratic clutch operation.
EAS25170

CHECKING THE PRESSURE PLATE

1. Check:
• Pressure plate 1 "1"
• Pressure plate 2 "2"
Cracks/damage → Replace.
• Bearing "3"
Damage/wear → Replace.
EAS25200

CHECKING THE PRIMARY DRIVE GEAR

1. Check:
• Primary drive gear
Damage/wear → Replace the crankshaft
and clutch housing as a set.
Excessive noise during operation →
Replace the crankshaft and clutch hous-
ing as a set.
EAS25210

CHECKING THE PRIMARY DRIVEN GEAR

1. Check:
• Primary driven gear "1"
Damage/wear → Replace the clutch
housing and crankshaft as a set.
Excessive noise during operation →
Replace the clutch housing and crank-
shaft as a set.
EAS25220
CHECKING THE PULL LEVER SHAFT AND
PULL ROD
1. Check:
• Pull lever shaft pinion gear teeth "1"
• Pull rod teeth "2"
Damage/wear → Replace the pull rod
and pull lever shaft as a set.
2. Check:
• Pull rod bearing
Damage/wear → Replace.
EAS25240

INSTALLING THE CLUTCH

1. Install:
• Washer
• Bearing
• Clutch housing assembly "1"
• Thrust washer
• Conical spring washer
ECA14B1019
Make sure to fit the projections "a" of the
oil pump drive sprocket to the concave "b"
of the clutch housing assembly.
TIP
When installing the clutch housing assembly,
turn the crankshaft so that the crankshaft web
"c" cannot be seen.
5-65
CLUTCH