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REMOVING THE CLUTCH BOSS
1. Remove:
• Nut "1"
• Lock washer "2"
• Clutch boss "3"
Straighten the lock washer tab and
use the clutch holding tool "4" to hold
the clutch boss.
Clutch holding tool:
YM-91042/90890-04086
A. For USA and CDN
B. Except for USA and CDN
CHECKING THE CLUTCH
HOUSING AND BOSS
1. Inspect:
• Clutch housing "1"
Cracks/wear/damage
• Clutch boss "2"
Scoring/wear/damage
place.
CHECKING THE PRIMARY DRIVEN
GEAR
1. Check:
• Circumferential play
Free play exists
Replace.
• Gear teeth "a"
Wear/damage
Replace.
CHECKING THE CLUTCH
SPRINGS
1. Measure:
• Clutch spring free length "a"
Out of specification
springs as a set.
CHECKING THE FRICTION
PLATES
1. Measure:
• Friction plate thickness
Out of specification
friction plate as a set.
Measure at all four points.
Replace.
Re-
CHECKING THE CLUTCH PLATES
1. Measure:
• Clutch plate warpage
Out of specification
clutch plate as a set.
Use a surface plate "1" and thick-
ness gauge "2".
CHECKING THE PUSH LEVER
SHAFT
1. Inspect:
• Push lever shaft "1"
Replace
Clutch spring free
length:
37.0 mm (1.46 in)
<Limit>: 36.0 mm (1.42
in)
Replace
Friction plate thickness:
2.9–3.1 mm (0.114–
0.122 in)
<Limit>: 2.7 mm (0.106
in)
Replace
Warp limit:
0.1 mm (0.004 in)
5-30
CLUTCH
Wear/damage
Replace.
CHECKING THE PUSH ROD
1. Inspect:
• Push rod 1 "1"
• Bearing "2"
• Washer "3"
• Push rod 2 "4"
• Ball "5"
Wear/damage/bend
INSTALLING THE PUSH LEVER
SHAFT
1. Install:
• Push lever shaft "1"
• Bolt (push lever shaft) "2"
Bolt (push lever shaft):
10 Nm (1.0 m•kg, 7.2
ft•lb)
• Apply the lithium soap base grease
on the oil seal lip.
• Apply the engine oil on the push le-
ver shaft.
• Fit the seat plate "3" in the groove
"a" of the push lever shaft and tight-
en the bolt (seat plate).
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.
Replace.

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This manual also for:

Wr250fx

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