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105
FUEL SYSTEM
COMPONENTS
6
COMPONENTS
The carbureted fuel system consists of the follow-
ing components:
•
Fuel pump
•
Carburetor
•
Intake manifold assembly
Fuel Pump
The fuel pump is a diaphragm-displacement type
and is operated by changes in crankcase pres-
sure. A pulse hose connects the pump to the cyl-
inder/crankcase. Alternately, vacuum and
pressure in the crankcase are transmitted to the
pump diaphragm.
Carburetor
The carburetor meters and distributes the fuel to
the engine. It controls engine speed and power
output by varying the intake charge density. To
react correctly to a wide range of operating condi-
tions, the carburetor has multiple fuel mixing cir-
cuits.
Fuel mixture enrichment for cold starting is con-
trolled by a choke.
IMPORTANT:
The 9.9/15 models use a tamper
resistant carburetor. Changing original factory fuel
mixture calibrations beyond the limits allowed by
the tamper resistant device is a violation of federal
law. Any carburetor adjustments beyond preset
limits become the responsibilty of the servicing
technician and/or the owner. Refer to
Intake Manifold
The intake manifold provides the mounting sur-
faces to adapt the carburetor to the cylin-
der/crankcase assembly. It contains the leaf
valves which control the intake charge to each cyl-
inder.
26417
9.9/15 Model
1.
Choke
32958
TYPICAL
1.
Intake manifold
COA1524
1
1
Содержание J10RLSUR
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Страница 18: ...16 INTRODUCTION NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 68: ...66 MAINTENANCE NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 86: ...84 ELECTRICAL NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 120: ...118 FUEL SYSTEM NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 147: ...POWERHEAD POWERHEAD VIEWS 145 7 POWERHEAD VIEWS Port Starboard View Manual Start DP0019 DP0020...
Страница 148: ...146 POWERHEAD POWERHEAD VIEWS Rear View Manual Start DP0021...
Страница 184: ...182 GEARCASE NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
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Страница 223: ...DR4698 Water Flow Diagram 9 9 15HP...
Страница 224: ...A B C 5 1 2 3 6 4 5 1 2 3 6 4 5 1 2 3 6 4 DRC6165R MWS Instrument Wiring Harness 1 2 5 1 2 3 6 7 4 8 A B C...
Страница 228: ...A B C D E B C D E A 9 9 15HP DRC 6217 2 1...
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