POWERHEAD
CYLINDER HEAD ASSEMBLY
Assembly
Valve Guide Replacement
IMPORTANT:
Be
careful not to damage cylinder
head when replacing valve guide.
Drive
valve guide out toward valve spring side.
004533
IMPORTANT: Do not reuse valve guide once it
has been removed.
Always use a new valve guide
(oversize) when
assembling.
Ream valve guide hole with
11
mm reamer to true
hole and remove burrs. Turn reamer clockwise,
never counterclockwise.
004534
148
Drive valve guide
in
from valve spring side to the
specified height.
Measure
valve guide protrusion:
• Protrusion: 0.39 ± 0.02
in
(10.0 ± 0.5 mm)
1. Valve guide protrusion
004535
Ream valve guide bore with 5.5 mm reamer.
004536
Clean and oil the valve guide bore after reaming.
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