Removing The Starter Clutch; Checking The Starter Clutch; Installing The Starter Clutch - Yamaha YZF-R1 Series Service Manual

EAS30305

REMOVING THE STARTER CLUTCH

1. Remove:
• Starter clutch bolt "1"
TIP
• While holding the clutch housing assembly "2"
with the sheave holder "3", remove the starter
clutch bolt.
• Fix the flat surface of the clutch housing as-
sembly with the sheave holder.
Sheave holder
90890-01701
Primary clutch holder
YS-01880-A
1
2
3
EAS30306

CHECKING THE STARTER CLUTCH

1. Check:
• Starter clutch rollers
Damage/wear → Replace.
2. Check:
• Starter clutch gear
• Starter clutch idle gear
Burrs/chips/roughness/wear → Replace the
defective part(s).
3. Check:
• Starter clutch gear's contacting surfaces
Damage/pitting/wear → Replace the starter
clutch gear.
4. Check:
• Starter clutch operation
a. Install the starter clutch gear "1" onto the
clutch housing assembly "2" and hold the
clutch housing assembly.
b. When turning the starter clutch gear clock-
wise "A", the starter clutch and the starter
clutch gear should engage, otherwise the
starter clutch is faulty and must be re-
placed.
c. When turning the starter clutch gear coun-
terclockwise "B", it should turn freely, oth-
erwise the starter clutch is faulty and must
be replaced.
A
B
EAS30309

INSTALLING THE STARTER CLUTCH

1. Install:
• Starter clutch
Starter clutch holder bolt
14 N·m (1.4 kgf·m, 10 lb·ft)
LOCTITE®
TIP
• Install the starter clutch so that the side of the
starter clutch roller assembly with the arrow
mark is toward the clutch housing.
• While holding the clutch housing assembly "1"
with the sheave holder "2", tighten the starter
clutch holder bolt "3".
• Fix the flat surface of the clutch housing as-
sembly with the sheave holder.
Sheave holder
90890-01701
Primary clutch holder
YS-01880-A
1
2
5-49
STARTER CLUTCH
1
2
3