Yamaha YXR70FX, Руководство по обслуживанию

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ENG
ROCKER ARMS AND CAMSHAFT
EBS00237
REMOVING THE ROCKER ARMS AND
CAMSHAFT
1. Loosen:
• locknuts
• valve adjusting screws
2. Remove:
• intake rocker arm shaft
• exhaust rocker arm shaft
• intake rocker arm
• exhaust rocker arm
TIP:
_
Remove the rocker arm shafts with the slide
hammer bolt
1 and weight 2 .
EBS00223
CHECKING THE CAMSHAFT
1. Check:
• cam lobes
Pitting/scratches/blue discoloration
→
Replace.
2. Measure:
• cam lobe dimensions
a
and
b
Out of specification
→
Replace.
Slide hammer bolt
90890-01083
Slide hammer bolt 6 mm
YU-01083-1
Weight
90890-01084, YU-01083-3
Camshaft lobe dimensions
Intake
a
42.481 ~ 42.581 mm
(1.6725 ~ 1.6764 in)
<Limit>:
42.381 mm (1.6685 in)
b
36.950 ~ 37.050 mm
(1.4547 ~ 1.4587 in)
<Limit>:
36.850 mm (1.4508 in)
Exhaust
a
43.129 ~ 43.229 mm
(1.6980 ~ 1.7019 in)
<Limit>:
43.029 mm (1.6941 in)
b
36.982 ~ 37.082 mm
(1.4560 ~ 1.4599 in)
<Limit>:
36.882 mm (1.4520 in)
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