Checking The Primary Driven Gear; Installing The Clutch - Yamaha YZF-R125 Service Manual

YamahaR125.COM
2. Check:
• Primary drive gear
Damage/wear → Replace the primary drive
gear and clutch housing as a set.
Excessive noise during operation → Replace
the primary drive gear and clutch housing as
a set.
3. Install:
• Primary drive gear
Refer to "BALANCER GEAR" on page 5-53.
EAS25210

CHECKING THE PRIMARY DRIVEN GEAR

1. Check:
• Primary driven gear "1"
Damage/wear → Replace the primary drive
gear and clutch housing as a set.
Excessive noise during operation → Replace
the primary drive gear and clutch housing as
a set.
EAS25240

INSTALLING THE CLUTCH

1. Install:
• Conical spring washer "1"
NOTE:
Install the conical spring washer as shown in the
illustration.
1
2. Install:
• Clutch housing
• Thrust washer "1"
NOTE:
Be sure to install the thrust washer so that its
sharp edge "a" is facing away from the clutch
boss.
3. Install:
• Clutch boss "1"
• Lock washer "2"
• Clutch boss nut
NOTE:
• Lubricate the clutch boss nut threads and lock
1
washer mating surfaces with engine oil.
• Align the notch "a" in the lock washer with a rib
"b" on the clutch boss.
New
4. Tighten:
• Clutch boss nut "1"
NOTE:
While holding the clutch boss "2" with the univer-
sal clutch holder "3", tighten the clutch boss nut.
5-44
New
2
b
a
Clutch boss nut
70 Nm (7.0 m·kg, 50 ft·lb)
Universal clutch holder
90890-04086
YM-91042
CLUTCH
1
a
1