Yamaha WR250F(Y) 2009, Owner'S Service Manual

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5-32
CLUTCH
INSTALLING THE CLUTCH
1. Install:
• Primary driven gear "1"
• Thrust washer "2"
• Clutch boss "3"
Apply the engine oil on the primary
driven gear inner circumference.
2. Install:
• Lock washer "1"
• Nut (clutch boss) "2"
Use the clutch holding tool "3" to hold
the clutch boss.
A. For USA and CDN
B. Except for USA and CDN
3. Bend the lock washer "1" tab.
4. Install:
• Seat plate "1"
• Cushion spring "2"
• Install the seat plate with its cham-
fered portion "a" facing the clutch
boss "3".
• Install the seat plate so that it is not
caught on the step "b".
• Install the cushion spring with the
paint "c" facing out.
5. Install:
• Friction plate 1 "1"
• Clutch plate 1 "2"
• Friction plate 2 "3"
• Clutch plate 2 "4"
• Install the clutch plates and friction
plates alternately on the clutch
boss, starting with a friction plate
and ending with a friction plate.
• Use the friction plates 1 for the first
and final while paying attention to
the difference in surface pattern.
• Apply the engine oil on the friction
plates and clutch plates.
• Unlike the clutch plate 2, the clutch
plate 1 has no surface gloss. Use
the clutch plate 1 for the first while
paying attention to the difference in
surface gloss.
6. Install:
• Bearing "1"
• Washer "2"
• Circlip "3"
To push rod 1 "4".
Apply the engine oil on the bearing
and washer.
7. Install:
• Push rod 2 "1"
• Ball "2"
• Push rod 1 "3"
Apply the engine oil on the push rod
1, 2 and ball.
8. Install:
• Pressure plate "1"
9. Install:
• Clutch spring "1"
• Bolt (clutch spring) "2"
Tighten the bolts in stage, using a
crisscross pattern.
Nut (clutch boss):
60 Nm (6.0 m•kg, 43
ft•lb)
Clutch holding tool:
YM-91042/90890-04086
Bolt (clutch spring):
10 Nm (1.0 m•kg, 7.2
ft•lb)