Yamaha WR426F(N) Owner's Service Manual page 448

Å ı
CLUTCH (WR400F)
EC493000
REMOVAL POINTS
EC483211
Clutch boss
1. Remove:
Nut 1
Lock washer 2
Clutch boss 3
NOTE:
Straighten the lock washer tab and use the
clutch holding tool 4 to hold the clutch boss.
Clutch holding tool:
YM-91042/90890-04086
Å For USA and CDN
ı Except for USA and CDN
EC494000
INSPECTION
EC484100
Clutch housing and boss
1. Inspect:
Clutch housing 1
Cracks/wear/damage
Clutch boss 2
Scoring/wear/damage
EC484201
Primary driven gear
1. Check:
Circumferential play
Free play exists
Gear teeth a
Wear/damage
EC484400
Clutch spring
1. Measure:
Clutch spring free length a
Out of specification
as a set.
Clutch spring free length:
Standard
44 mm (1.73 in)
4 - 57
ENG
Replace.
Replace.
Replace.
Replace.
Replace springs
<Limit>
43 mm (1.69 in)