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Copyright © 2005 ICS, Blount Inc.
633GC SHOP MANUAL
27 This section covers testing the
crankcase for leaks. A leak in
the crankcase can cause the
engine not to run or to run too
lean.
27.1 Install the exhaust seal flange.
A Be sure the spark plug is installed
and tightened firmly.
27.2 Install the intake seal flange.
27.3 Install the pressure gauge and bulb.
27.4 Pressurize the crankcase to 7 psi (0.5
bar).
27.5 If the pressure does not remain the
same, use soapy water to find the
leak.
NOTE:
It is recommended that this test
be performed after an engine
rebuild.
27. CRANKCASE
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