Yamaha YZF-R25, Service Manual

Page: 260 / 456

GENERATOR AND STARTER CLUTCH
5-43
• Starter clutch gear
Burrs/chips/roughness/wear
→
Replace the
defective part(s).
3. Check:
• Starter clutch gear contact surfaces
Damage/pitting/wear
→
Replace the starter
clutch gear.
4. Check:
• Starter clutch operation
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a. Install the starter clutch and starter clutch
gear “1” onto the generator rotor “2” and hold
the generator rotor. Refer to “INSTALLING
THE STARTER CLUTCH” on page 5-43.
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 replaced.
c. When turning the starter clutch gear counter-
clockwise “B”, it should turn freely, otherwise
the starter clutch is faulty and must be re-
placed.
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EAS30871
INSTALLING THE STARTER CLUTCH
1. Assemble:
• Starter clutch rollers “1”
• Starter clutch inner race “2”
(to the starter clutch outer race “3”)
TIP
When installing the starter clutch rollers and
starter clutch inner race to the starter clutch out-
er race, make sure that the springs “a” are point-
ing in the direction shown in the illustration.
2. Install:
• Starter clutch “1”
• Starter clutch gear
(to the generator rotor “2”)
TIP
• Install the starter clutch so that the side of the
clutch shown in the illustration is facing toward
the generator rotor.
• While holding the generator rotor with the rotor
holding tool “3”, tighten the starter clutch bolts
“4”.
1
A
B
2
T
R
.
.
Starter clutch bolt
14 Nm (1.4 m·kgf, 10 ft·lbf)
LOCTITE®
Rotor holding tool
90890-04166
YM-04166
2
3
a
1
2
1
3
2
4
4