Yamaha WR426F(N) Owner's Service Manual page 450

CLUTCH (WR400F)
EC484500
Friction plate
1. Measure:
Friction plate thickness
Out of specification
plate as a set.
Measure at all four points.
Friction plate thickness:
Friction plate 1 [ø112 mm (4.41 in)]:
2.72 ~ 2.88 mm
(0.107 ~ 0.113 in)
<Limit>: 2.52 mm (0.099 in)
Friction plate 2 [ø116 mm (4.57 in)]:
2.92 ~ 3.08 mm
(0.115 ~ 0.121 in)
<Limit>: 2.72 mm (0.107 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
Wear/damage/bend
4 - 58
ENG
Replace friction
Replace clutch
Replace.
Replace.