Yamaha TTR90(M), Owner'S Service Manual

Page: 208 / 287

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ENG
CLUTCH
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 .
EC484400
Clutch spring
1. Measure:
●
Clutch spring free length
a
Out of specification
→
Replace springs
as a set.
Warp limit:
0.05 mm (0.002 in)
Clutch spring free length
Standard Limit
26.2 mm
(1.03 in)
24.2 mm
(0.95 in)
Push rod
1. Measure:
●
Push rod #2 bend
Out of specification
→
Replace.
Bending limit:
0.5 mm (0.02 in)
Primary clutch
1. Measure:
●
Primary clutch housing inside diameter
Out of specification
→
Replace.
Primary clutch housing inside
diameter:
105 mm (4.13 in)
<Limit>: 106 mm (4.17 in)