Yamaha VMX12 2001 Service Manual page 148

CAMSHAFTS
5. Check:
• TDC mark a
Make sure the TDC mark on the generator
rotor is aligned with the stationary pointer
b.
• camshaft timing punch mark c (o: small
hole)
Make sure the punch marks in the cam-
shafts are aligned with the marks d on the
camshaft caps.
Out of alignment → Adjust.
Refer to the camshaft installation steps
above.
6. Tighten:
• camshaft sprocket bolts
CAUTION:
@
Be sure to tighten the camshaft sprocket
bolts to the specified torque to avoid the
possibility of the bolts coming loose and
damaging the engine.
@
7. Install:
• camshaft caps "I-2" 1
• camshaft caps "E-2" 2
• timing chain guide (top side) 3
• timing chain guide (exhaust side) 4
8. Lubricate:
• timing chain
• camshaft sprockets
• camshafts
• valve pads
Recommended lubricant
Engine oil
Front cylinder
NOTE:
@
When installing the front cylinder camshafts,
repeat the rear cylinder camshaft installation
procedure. However, note the following points.
@
4 - 18
ENG
24 Nm (2.4 m · kg)
10 Nm (1.0 m · kg)