FUEL SYSTEM/CARBURETION
4.14
FUEL LEVEL
A fuel level test can be performed on some models if
the drain hose fitting is accessible. Be sure to
re-attach the bowl drain hose after performing the
test. A fuellevel test allows you toobservethe height
of the fuel in the float bowl without removing the
carburetor. The fuel level can be observed with the
engine either running or shut off, however, engine
must run briefly to allow fuel level to stabilize..
1. Attacha clearline to drain fitting. Besure line fits
tightly on fitting. Position hose along side of
carburetor as shown.
1.5 mm
.060″
Bowl Mating
Surface
2. Open bowl drain screw by turning
counterclockwise approximately two turns. Start
and run engine for 3 to 5 seconds to allow fuel
level to stabilize in the line. If level is out of
specification, removecarburetor and inspectinlet
needle and seat, float height, passages, etc.
NOTE: If a line was removed to perform this
procedure, it must be replaced.
FUEL PUMP SERVICE
The pump is located under the left front fender of the
machine.
To test the fuel pump:
1. Turn fuel off.
2. Disconnect impulse line from pump.
3. Connect Mity-Vact (PN2870975) totheimpulse
line fitting on the pump.
4. Apply 5 inches (Hg) vacuum to the pump fitting.
The diaphragm should hold vacuum indefinitely.
If fuel is present in the impulse line or vacuum
chamber of thepump, the diaphragm is ruptured.The
pump diaphragms must be replaced.
Fuel Lines
Fuel Pump
Ill.1
Pulse Line
FUEL PUMP DISASSEMBLY
1. Remove the screws from the pump diaphragm
cover. Notethelocationof thetwolongerscrews.
2. Remove the diaphragm cover gasket,
diaphragm, and valve body gasket.
3. Removetheoutlet checkvalvecover,diaphragm,
and gasket.
FUEL PUMP
INSPECTION/ASSEMBL
Y
1. Inspect inlet and outlet check valves for cracks,
warpage or damage. Inspect the diaphragms for
cracks, holes or swelling.
2. Tocleanthevalvesor pumpbody,removetheset
screw and washer . Remove the valve and wash
with soap and water . Carburetor cleaner may be
used to clean the pump body when the check
valves are removed. CAUTION: Some
carburetor cleaners are very caustic and should
not be used to clean the non-metal parts of the
fuel pump.
3. Checkthesealing surfacesof thepumpbody and
covers. Carefully remove all traces of old gasket
and check the surfaces for damage. Replace
diaphragms and gaskets as a set.
4. Reassemble the pump in the reverse order of
disassembly. Tighten all screws evenly.
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