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H
Read all of Section Band this section before attempting any procedure. Pay particular attention to all Notes, Cautions and Warnings
GENERAL
The fuel system consists of a fuel tank, fuel lines, fuel fil
ter, fuel pump and carburetor (Ref Fig. 1 on page H-1 ).
CARBURETOR OPERATION
The carburetor consists of four different systems:
• float
• pilot jet
• main jet
• choke systems
Float System
The float chamber is located on the underside of the car
buretor and the correct fuel level is maintained by means
of the float and needle valve.
As the fuel flows from the fuel pump it must pass through
the needle valve and into the float chamber. As the fuel
enters the float chamber, the float starts to rise against
the needle valve. When the buoyancy of the float
Fuel Filter
Fuel Pump
Fuel Line
�.
--
·
·�
Carburetor
exceeds the fuel pressure on the needle valve, the float
closes the needle valve. The float is adjustable to main
tain the correct fuel level within the float chamber. As fuel
is consumed from the float chamber, the float drops
which allows the needle valve to admit additional fuel.
Pilot Jet System
The pilot jet system function is to deliver fuel to the
engine during low speed operation. The fuel flow is
determined by the pilot jet size and the setting of the pilot
screw.
Main Jet System
The main jet system function is to deliver fuel to the
engine during acceleration and heavy load conditions.
Fuel flow is determined by the main jet size. Air is mixed
with fuel that passes through the bleed opening in the
main nozzle. This mixture passes into the carburetor ven
turi as atomized air/fuel and is mixed with intake air and
delivered to the engine.
Fig. 1 Fuel System
Repair and Service Manual
Page H-1
Summary of Contents for FLEET 1999
Page 6: ...TABLE OF CONTENTS Notes __________________________ _ Page iv Repair and Service Manual...
Page 10: ...SAFETY INFORMATION Notes _________________________ _ Page viii Repair and Service Manual...
Page 26: ...SAFETY Notes _ _ ___________________________ _ Page B ii Repair and Service Manual...
Page 48: ...BODY Notes _ _ ___________________________ _ Page C ii Repair and Service Manual...
Page 56: ...WHEELS AND TIRES Notes __________________________ _ Page D ii Repair and Service Manual...
Page 72: ...SPEED CONTROL Notes _ _ ________________________ _ Page F ii Repair and Service Manual...
Page 80: ...ENGINE Notes _ _ __________________________ _ Page G ii Repair and Service Manual...
Page 94: ...FUEL SYSTEM Notes _ _ _________________________ _ Page H ii Repair and Service Manual...
Page 110: ...ELECTRICAL Notes _ _ _________________________ _ Page K ii Repair and Service Manual...
Page 120: ...ACCESSORY WIRING Notes __________________________ _ Page L ii Repair and Service Manual...
Page 148: ...REAR SUSPENSION Notes __________________________ _ Page N ii Repair and Service Manual...
Page 154: ...REAR AXLE Notes _ _ ___________________________ _ Page P ii Repair and Service Manual...
Page 158: ...PAINT Notes _ _ ___________________________ _ Page Q ii Repair and Service Manual...
Page 162: ...TROUBLESHOOTING Notes _ _ ________________________ _ Page R ii Repair and Service Manual...
Page 170: ...LIMITED WARRANTY Notes __________________________ _ Page S ii Repair and Service Manual...
Page 176: ...LIMITED WARRANTY Notes __________________________ _ Page S 6 Repair and Service Manual...
Page 178: ...GENERAL SPECIFICATIONS Notes _________________________ _ Page T ii Repair and Service Manual...