Yamaha WR426F(N) Owner's Service Manual page 436

CLUTCH (WR426F)
EC484500
Friction plate
1. Measure:
Friction plate thickness
Out of specification
plate as a set.
Measure at all four points.
Friction plate thickness:
2.9 ~ 3.1 mm
(0.114 ~ 0.122 in)
<Limit>: 2.7 mm (0.106 in)
EC484600
Clutch plate
1. Measure:
Clutch plate warpage
Out of specification
plate as a set.
Use a surface plate 1 and thickness
gauge 2.
Warp limit:
0.1 mm (0.004 in)
Push lever
1. Inspect:
Push lever 1
Wear/damage
EC484810
Push rod
1. Inspect:
Push rod 1 1
Bearing 2
Plain washer 3
Push rod 2 4
Ball 5
Wear/damage/bend
4 - 51
ENG
Replace friction
Replace clutch
Replace.
Replace.