FUEL PUMP
Page 3A-4 90-828631R3 MARCH 1999
Fuel Pump Operation
1. The fuel pump is a diaphragm pump which is mechanically driven off of the rocker arm.
2. The black mounting block (insulator) and the two outlets on the fuel pump help prevent
vapor lock.
3. If the engine runs out of fuel, or has a restriction preventing adequate fuel flow, the pump
will make a “clicking” noise.
WARNING
FIRE AND EXPLOSION HAZARD. Observe fire prevention rules, particularly NO
SMOKING. Before servicing any part of the fuel system, disconnect electrical sys-
tem at the battery. Drain the fuel system completely. Use an approved container to
collect and store fuel. Wipe up any spillage immediately. Materials used to contain
spillage must be disposed of in an approved receptacle. Any fuel system service
must be performed in a well ventilated area
.
FUEL LEAKAGE FROM ANY PART OF THE FUEL SYSTEM CAN BE A FIRE AND EX-
PLOSION HAZARD WHICH CAN CAUSE SERIOUS BODILY INJURY OR DEATH.
Careful periodic inspection of the entire fuel system is mandatory, particularly after
engine storage. All fuel components, including fuel tanks, whether plastic, metal,
or fiberglass, fuel lines, primer bulbs, fittings, swelling, and must be inspected for
corrosion. Any sign of leakage or deterioration necessitates replacement before
further engine operation.
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