Westerbeke 6.5KW - Engine Inspection and Repair

ENGINE INSPECTION AND REPAIR
NOTE: Before washing the cylinder head and block, check them
for indications of water leaks, gas leaks, damage or cracks.
Before checking, wash each part to remove any adhered foreign
matter (pieces of gasket, dust, oil, carbon, scale, etc.)
Since the cylinder head, cylinder head cover, timing chain cover
and other engine parts are made of aluminum, handle them carefully
to ensure against damage.
Do not use cleaning solutions that will be harmful to the alumi-
num.
Checking Cylinder Head
1. Replace the cylinder head, if it has any damage, such as water
leaks, gas leaks or cracks.
2. Measure the extent of warping (flatness) on the lower surface
along the areas shown in the figure. If the warping is more than
specifications, grind the surface or replace.
5t
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aight-etlgs
Height of cylinder head: 90.5 mm (3.5630in)
Warp limit: 0.15 mm (0.006in)
Grinding limit: 0.2 mm (0.008 in)
Checking Valve Guide
Measure the clearance between the valve and guide. If the
clearance exceeds the specified limit, replace the guide or valve,
or both.
Clearance limit: 0.20 mm
(0.0079 in)
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