Camshaft - Yamaha Fazer Service Manual

ENGINE INSPECTION AND REPAIR
Out of specification Ÿ Replace the Cylinder
Head
CAMSHAFT INSPECTION
ç
è
4-19
6. Calculate :
Stem Guide Clearance
Stem-to-guide clearance =
Valve guide inside diameter –
Valve stem diameter
Stem-to-guide clearance limit :
Intake :
0.010 ~ 0.00370 mm
<limit : 0.08 mm>
Exhaust :
0.025 ~ 0.052 mm
<limit : 0.10 mm>
7. Measure :
• Runout (valve stem)
Out of specification Ÿ Replace
Runout Limit :
0.01 mm
1. Inspect :
• Cam lobes
Pitting/scratches/blue discoloration Ÿ
Replace
2. Measure :
• Cam lobes dimension ç and è
Out of specification Ÿ Replace.
Cam lobes dimension :
Intake :
ç 25.881 ~ 25.981 mm
<limit 25.851 mm>
è 21.195 ~ 21.295 mm
<limit 21.165 mm>
Exhaust :
ç 25.841 ~ 25.941 mm
<limit 21.811 mm>
è 21.05 ~ 21.15 mm
<limit 21.02 mm>
3. Inspect :
• Camshaft oil passage
Chocked Ÿ Blow out oil passage with
compressed air.
ENG