Yamaha YZ426F(M)/LC Owner's Service Manual page 322

CLUTCH
EC484500
Friction plate
1. Measure:
Friction plate thickness
Out of specification → Replace friction
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 → Replace clutch
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 → Replace.
EC484810
Push rod
1. Inspect:
Push rod 1 1
Bearing 2
Plain washer 3
Push rod 2 4
Wear/damage/bend → Replace.
EC495000
ASSEMBLY AND INSTALLATION
Push lever
1. Install:
Push lever 1
NOTE:
Apply the engine oil on the oil seal lip and push
lever.
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ENG