Yamaha YFM250RX 2008 Service Manual page 163

CLUTCH
3. Tighten:
• Clutch boss nut
• Primary drive gear nut
Clutch boss nut
75 Nm (7.5 m•kg, 55 ft•lb)
Primary drive gear nut
80 Nm (8.0 m•kg, 59 ft•lb)
NOTE: NOTE:
• While holding the clutch boss with the univer-
sal clutch holder
nut.
• Place the aluminum plate
mary drive gear
and then tighten the primary drive gear nut.
Universal clutch holder
90890-04086, YM-91042
4. Bend the lock washer tab along a flat side
of the nut.
5. Lubricate:
• Friction plates
• Clutch plates
(with the recommended lubricant)
)
Recommended lubricant
Engine oil
6. Install:
• Friction plates (6 piece)
• Clutch plates (5 piece)
NOTE: NOTE:
First, install a friction plate and then alternate
between a clutch plate and a friction plate.
4-47
ENG
, tighten the clutch boss
between pri-
and clutch housing ,