90
POWERHEAD
CYLINDER/CRANKCASE/PISTON
Inspect the camshaft gear for wear or other dam-
age. Replace, if necessary.
Cam Rocker Arm
Inspect the cam rocker arm for wear or other dam-
age. Replace, if necessary.
Cylinder / Piston / Piston Ring
Measure the gasket surface of the cylinder at
locations shown.
Cylinder distortion:
•
Service limit: 0.002 in. (0.05 mm)
If the measurement exceeds the service limit,
resurface or replace the cylinder.
IMPORTANT:
The cylinder can be resurfaced,
using a surface plate and a #400 grit wet sandpa-
per. Move the cylinder in a figure eight pattern
when sanding.
Water Jacket
Inspect the water passages for clogs or obstruc-
tions. Clean, if necessary.
Cylinder Bore
Inspect the cylinder wall for scratches, roughness,
or ridges which indicate excessive wear. If the cyl-
inder bore is very rough or deeply scratched or
ridged, rebore the cylinder and use a oversize pis-
ton.
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