Volvo Penta 3.0GS/SX, Owner'S Manual

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53
Carburetor filter
GL and GS models
A fuel filter is located at the point where the feed pipe
connects with the carburetor. Check the filter at least
once per season or as necessary.
To check:
Undo the fuel line and remove the nipple in the filter
housing (avoid fuel spillage!). You can now take the
filter out to check it.
NOTE! Some models (3.0GL/GS) have a spring inside
the filter.
Wash filter in kerosene or similar. Reinstall in reverse
order. Check seal between nipple and filter housing
and replace it if necessary. Start the engine and
check that no connections are leaking.
Carburetor adjustment
GL and GS models
Changes in fuel, temperature or altitude (high level la-
kes) may make it necessary to adjust the carburetor
idling setting and the fuel mixture. Before making ad-
justments, ignition timing (including spark plug gap)
and the state of the flame trap must be checked.
NOTE! The engine should be hot when idling speed
and fuel mixture are adjusted. An authorized Volvo
Penta Service workshop should set the fuel mixture.
A workshop tachometer should be used when setting
idling speed.
Carburetor filter 3.0 models
Carburetor filter 4.3, 5.0 and 5.7 models
●
Clean up any spilled fuel.
●
Run bilge blower for at least five minutes to
vent engine compartment, then start engine
and check for leakage. Smell for fuel in the
bilge’s, if you can smell fuel, explosion and
fire are an extreme danger. Clean up the
bilge’s until fuel cannot be detected by smell.
NOTE! A loud whining noise at idle may be due to a
restricted fuel filter causing a noisy fuel pump. Ope-
rating engine with a restricted filter may damage
pressure regulator or fuel pumps. See your Volvo
Penta dealer if pumps make abnormal noise.
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