● Assemble the primary drive gear by facing its
flat face “a” toward the crankcase.
● Align lock washer projection “b” with the clutch
boss slit during assembling.
● Align lock washer projection “c” with the claw
washer slit during assembling.
2. Install:
● Clutch boss nut
● Primary drive gear nut
3. Tighten:
●
Clutch boss nut “1”
NOTE:
While holding the clutch boss “3” with the univer-
sal clutch holder “2”, tighten the clutch boss nut.
4. Tighten:
●
Primary drive gear nut “1”
NOTE:
Insert aluminum plate “a” between primary drive
gear “2” and primary driven gear “3”, and tighten
the primary drive gear nut.
5. Be sure to bend the lock washer tab along to
the nut side face.
6. Lubricate:
● Friction plates
● Clutch plates
(with the recommended lubricant)
7. Install:
● Clutch damper spring seat “1”
● Clutch damper spring “2”
● Friction plates
● Clutch plates
NOTE:
● Assemble the clutch dumper spring seat and
the clutch damper spring as shown.
● First, install the friction plate and then alternate
between the clutch plates and friction plates.
Clutch boss nut
75 Nm (7.5 m•kg, 54 ft•lb)
Universal clutch holder
90890-04086
YM-91042
New
New
1
a
5
6
New
2
b
c
4
3
6
5
1
New
New
T
R
.
.
Primary drive gear nut
80 Nm (8.0 m•kg, 58 ft•lb)
Recommended lubricant
Engine oil
2
1
3
T
R
.
.