47
Flame arrestor
Remove the flame arrestor every 50 operating hours.
•
Clean in solvent, air dry, and inspect it for damage.
•
Replace if damaged.
•
Reinstall flame arrestor; make sure unit is securely fas-
tened.
To prevent fire and explosion in the engine compartment,
the flame arrestor must always be in place, properly secured,
and undamaged.
Electric fuel pumps
WARNING!
Check fuel pumps frequently for signs of fuel leakage. If
leakage occurs, have the fuel pump serviced immediately
by your Volvo Penta dealer.
EFI engines have two electric fuel pumps:
•
a low-pressure pump to bring fuel from the boat tank to
the engine
•
a high-pressure pump to supply the fuel injectors.
Both pumps are protected by a single 20-amp fuse. The
pumps will operate only when th e engine is cranking or run-
ning. If a pump does not function, check the fuses and re-
place them if necessary. See your Volvo Penta dealer if fur-
ther service is required.
WARNING!
Do not run engine out of fuel or run the electric fuel
pumps dry more than 20 seconds. Running the electric
fuel pumps dry will damage the fuel pumps.
Fuel filter
All models have a fuel filter in the fuel line before the fuel
pump.
Caution!
Volvo Penta EFI engines require a special marine filter
with a 5-10 micron filtering capability. Do not substitute
any other type of filter.
WARNING!
Accumulation of water and other fuel contaminants may form
corrosive compounds that can damage the fuel filter, and
result in fuel leakage. For this reason, annual replacement
of the fuel filter is required to avoid risk of explosion or fire.
Engine fuel filter replacement
The old fuel filter contains flammable fuel. Dispose of
safely.
Run the bilge blower for at least five minutes to vent the
engine compartment, then start
the engine and check
for leakage. Smell for fuel in the bilge. IF YOU CAN SMELL
FUEL, TURN THE ENGINE OFF IMMEDIATELY — EXPLO-
SION AND FIRE ARE AN EXTREME DANGER. Clean up
the bilge until fuel cannot be detected by smell.
1. Turn off the engine.
2. Unscrew fuel filter; remove and discard.
3. Lightly lubricate the gasket and inner seal on new fuel
filter.
4. Screw on fuel filter and hand-tighten, following instruc-
tions on filter.
5. Clean up any spilled fuel.
6. Run the bilge blower for at least five minutes to vent the
engine compartment, then start
the engine and check for
leakage.
7. Smell for fuel in the bilge.
DANGER
IF YOU CAN SMELL FUEL, TURN THE ENGINE OFF IM-
MEDIATELY — EXPLOSION AND FIRE ARE AN EXTREME
DANGER.
8. Clean up the bilge until fuel cannot be detected by
smell.
NOTE! A loud whining noise at idle may be due to a re-
stricted fuel filter causing a noisy fuel pump. Oper-
ating the engine with a restricted filter may damage
the pressure regulator or fuel pumps. See your Volvo
Penta dealer if the pump makes an unusual noise.
Summary of Contents for 4.3OSi-C
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