FEATURES
1-2
EAS20170
FEATURES
ET1D71017
OUTLINE OF THE FI SYSTEM
The main function of a fuel supply system is to provide fuel to the combustion chamber at the optimum
air-fuel ratio in accordance with the engine operating conditions and the atmospheric temperature. In
the conventional carburetor system, the air-fuel ratio of the mixture that is supplied to the combustion
chamber is created by the volume of the intake air and the fuel that is metered by the jet used in the
respective carburetor.
Despite the same volume of intake air, the fuel volume requirement varies by the engine operating con-
ditions, such as acceleration, deceleration, or operating under a heavy load. Carburetors that meter the
fuel through the use of jets have been provided with various auxiliary devices, so that an optimum air-
fuel ratio can be achieved to accommodate the constant changes in the operating conditions of the en-
gine.
As the requirements for the engine to deliver more performance and cleaner exhaust gases increase,
it becomes necessary to control the air-fuel ratio in a more precise and finely tuned manner. To accom-
modate this need, this model has adopted an electronically controlled fuel injection (FI) system, in place
of the conventional carburetor system. This system can achieve an optimum air-fuel ratio required by
the engine at all times by using a microprocessor that regulates the fuel injection volume according to
the engine operating conditions detected by various sensors.
The adoption of the FI system has resulted in a highly precise fuel supply, improved engine response,
better fuel economy, and reduced exhaust emissions.
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1. Air temperature sensor
2. ISC (idle speed control) unit
3. Cylinder-#2 intake air pressure sensor
4. Engine temperature sensor
5. Cylinder-#1 right ignition coil
6. Throttle position sensor
7. Cylinder-#1 left ignition coil
8. Cylinder-#1 intake air pressure sensor
9. Fuel pump
10. ECU (electronic control unit)
11. Relay unit (fuel pump relay)
12. EXUP servo motor
13. Speed sensor
14. O
2
sensor
15. Lean angle sensor
16. Spark plug
17. Injector #1
18. Crankshaft position sensor
19. Injector #2
20. Cylinder-#2 right ignition coil
21. Cylinder-#2 left ignition coil
Содержание ROADLINER XV19SW
Страница 2: ...SERVICE MANUAL XV19SW C XV19W C XV19MW C XV19CTSW C XV19CTW C XV19CTMW C LIT 11616 20 40 1D7 28197 11...
Страница 7: ......
Страница 9: ......
Страница 25: ...SPECIAL TOOLS 1 15...
Страница 47: ...TIGHTENING TORQUES 2 21 Cylinder head tightening sequence 3 1 2 4 A B 3 1 2 4 A Front cylinder B Rear cylinder...
Страница 56: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 30...
Страница 61: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 35 D D B B D D C C A A B C C B 3 2 1 3 4 6 7 6 7 5...
Страница 63: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 37 A A A A 1 3 2 4...
Страница 64: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 38 1 Oil pipe 1 2 Oil pump 3 Oil strainer crankcase 4 Joint pipe...
Страница 65: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 39 A 1 2 3 4...
Страница 67: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 41 A A A 1 5 5 1 3 2 4 B B B B...
Страница 69: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 43 1 2...
Страница 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 44 1 Transfer gear oil pump 2 Middle driven shaft...
Страница 79: ...CABLE ROUTING 2 53...
Страница 87: ...CABLE ROUTING 2 61...
Страница 90: ......
Страница 123: ...ELECTRICAL SYSTEM 3 33 a b 1...
Страница 126: ......
Страница 148: ...FRONT WHEEL 4 22...
Страница 185: ...HANDLEBAR 4 59 Throttle cable free play 4 0 6 0 mm 0 16 0 24 in...
Страница 288: ...GENERATOR AND STARTER CLUTCH 5 76 Yamaha bond No 1215 90890 85505 Three Bond No 1215...
Страница 344: ......
Страница 350: ...IGNITION SYSTEM 7 6...
Страница 358: ...CHARGING SYSTEM 7 14 1 AC magneto 2 Rectifier regulator 4 Main fuse 6 Battery...
Страница 360: ...CHARGING SYSTEM 7 16...
Страница 411: ...ELECTRICAL COMPONENTS 7 67 EAS27970 ELECTRICAL COMPONENTS 11 3 6 7 8 10 4 9 12 13 5 2 1 14...
Страница 413: ...ELECTRICAL COMPONENTS 7 69 16 18 2 11 13 9 8 10 12 14 15 17 1 3 4 5 6 7...
Страница 443: ......
Страница 444: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN...