Yamaha WR250FR 2002, Руководство по эксплуатации для владельца, Страница: 147 / 343

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ENG
CAMSHAFTS
5. Remove:
• Exhaust camshaft
1
• Intake camshaft
2
NOTE:
Attach a wire
3
to the timing chain to prevent
it from falling into the crankcase.
1
2
3
INSPECTION
Camshaft
1. Inspect:
• Cam lobe
Pitting/scratches/blue discoloration
→
Replace.
2. Measure:
• Cam lobe length
a
and
b
Out of specification
→
Replace.
Cam lobes length:
Intake:
a
30.296 ~ 30.346 mm
(1.1923 ~ 1.1947 in)
<Limit>: 30.196 mm
(1.1888 in)
b
22.45 ~ 22.55 mm
(0.8839 ~ 0.8878 in)
<Limit>: 22.35 mm
(0.8799 in)
Exhaust:
a
30.399 ~ 30.499 mm
(1.1968 ~ 1.2007 in)
<Limit>: 30.299 mm
(1.1929 in)
b
22.45 ~ 22.55 mm
(0.8839 ~ 0.8878 in)
<Limit>: 22.35 mm
(0.8799 in)
3. Measure:
• Runout (camshaft)
Out of specification
→
Replace.
Runout (camshaft):
Less than 0.03 mm (0.0012 in)
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