![background image](/i/yamaha/162252/yamaha-vmx12h-1995/h/yamaha-vmx12h-1995-150.png)
INSPECTION AND REPAIR
-0
2.
Measure:
force (installed length)
Out of specification
Replace.
Valve Compressed Force:
Outer:
Inner:
13.3
-
15.7
34.6
at
33.8 mm (1.331 in)
6.29
-7.39
(13.9
16.3
at 31.8 mm (1.75 in)
Valve Lifter
1.
Inspect:
lifter wall
Scratches/Damage
Replace both
lifter
and cylinder head.
Valve Installation
1.
Lubricate:
Valve stem
seal
High-Quality Molybdenum Disulf ide
Motor Oil or Molybdenum Disulfide
Grease
2.
Install:
spring seat
seal
springs
spring seat
retainers
NOTE:
Install springs with wider-gapped coils facing
upwards, as shown.
Larger
pitch
Smaller
pitch
3-26