Kohler Command Pro CV980 User Manual
Page 25
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3.3
Section 3
Troubleshooting
3
ȱȱȱȱȱȱȱȱȱȱ
the engine is reassembled and placed into operation.
ȱȱȱȱȱȱȱ¢ȱ
ȱ ȱȱȱȱȱȱǯ
Basic Engine Tests
Crankcase Vacuum Test
ȱȱȱȱȱȱȱȱ
crankcase when the engine is operating. Pressure
ȱȱȱǻ¢ȱȱ¢ȱȱȱȱ
¢ȱȱǼȱȱȱȱȱȱ
ȱȱȱȱǰȱǰȱȱȱȱǯ
ȱȱȱȱȱ ȱȱȱ
ȱȱȱȱȱȱǻȱȱŘǼǯȱ
ȱȱȱȱȱȱǯ
ȱȱȱȱȱ ȱȱDZ
ȱ ŗǯȱ ȱȱȦȱȱȱȱęȱǯȱȱ
ȱȱȱȱȱȱȱǯȱ
ȱȱȱȱěȱȱȱǯ
2. Start the engine and run at no-load high speed
ǻřŘŖŖȱȱřŝśŖȱǼǯ
ȱ řǯȱ ȱȱȱȱȱȱ ȱȱȱȱ
tube.
ȱ ȱ ȱȱȱȱȱȱȱȱȱȱ
ȱ10.2 cm (4 in.) ȱȱȱȱȱȱǯ
ȱ ȱ ȱȱȱȱȱȱȱȱȱȱęȱ
ǻ ȦȱǼǰȱȱȱȱȱȱȱȱ
ȱ ȱȱȱȱȱȱȱȱǻǼǰȱ
ȱȱȱȱȱȱȱ ǯ
ȱ Śǯȱ ȱȱȬěȱȱbefore stopping the
engine.
ȱȱȱȱȱ ȱȱȦ
ȱ ȱ
ȱǻȱȱŘǼDZ
ȱ ŗǯȱ ȱȱȱȱȱęȱȦǯ
ȱ Řǯȱ ȱȱȱȱȱȱęȦȱȱ
opening.
ȱ řǯȱ ȱȱȱęĴȱȱȱȱ¢ȱȱ
the hole in the adapter.
4. Start the engine and bring it up to operating
ȱǻřŘŖŖȬřŜŖŖȱǼǯ
ȱ śǯȱ ȱȱȱȱȱǯȱȱȱȱ
is to the ĞȱȱȃŖȄȱȱȱǰȱȱȱ
ȱȱȱǯȱȱȱȱȱȱ
the rightȱȱȃŖȄȱȱȱǰȱȱȱȱ
present.
ȱ ȱ ȱȱȱȱȱȱȱȱ
Śȱȱȱ ǯȱȱȱȱȱ ȱȱ
ęǰȱȱȱȱȱǰȱȱȱ
ȱ ȱȱȱȱȱǯ
No Crankcase Vacuum/Pressure in Crankcase
Possible Cause
Solution
ȱȱȱȱǯ
ȱǰȱȱȱ¢ǰȱǰȱ
and recheck pressure
ȱȦȱȱǯȱȱȱ
¢ȱȱǯ
Replace all worn or damaged seals and gaskets. Make sure
ȱȱȱȱ¢ǯȱȱȱȱ
ȱȱȱ ȱ¢
ȱ ȱ¢ȱȱ¢ȱȱǻęȱ¢ȱ
ȱǼ
ȱǰȱǰȱ¢ȱǰȱǰȱȱȱ
guides.
Restricted exhaust.
ȦȱȱĝȦ¡ȱ¢