Yamaha YZ426F, Руководство по эксплуатации для владельца

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ENG
VALVES AND VALVE SPRINGS
Valve spring
1. Measure:
●
Valve spring free length
a
Out of specification
→
Replace.
2. Measure:
●
Compressed spring force
a
Out of specification
→
Replace.
b
Installed length
Free length (valve spring):
Intake:
41.36 mm (1.63 in)
<Limit>: 39.3 mm (1.55 in)
Exhaust:
43.60 mm (1.72 in)
<Limit>: 41.4 mm (1.63 in)
Compressed spring force:
Intake:
11.5 ~ 13.2 kg at 32.87 mm
(25.35 ~ 29.10 lb at 1.29 in)
Exhaust:
11.9 ~ 13.7 kg at 35.38 mm
(26.23 ~ 30.20 lb at 1.39 in)
3. Measure:
●
Spring tilt
a
Out of specification
→
Replace.
Spring tilt limit:
Intake:
2.5˚/1.8 mm (0.071 in)
Exhaust:
2.5˚/1.9 mm (0.075 in)
Valve lifter
1. Inspect:
●
Valve lifter
Scratches/damage
→
Replace both lift-
ers and cylinder head.