FEATURES
1-2
EAS20008
FEATURES
EAS30005
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.
9,10,11
12
13
14
16
15
1
2
3
4
5
6
7
8
1. Engine trouble warning light
2. ABS ECU
3. Front wheel sensor
4. VVA (variable valve actuator) solenoid
5. O
2
sensor
6. Spark plug
7. Coolant temperature sensor
8. Crankshaft position sensor
9. Intake air temperature sensor
10. Intake air pressure sensor
11. Throttle position sensor
12. ISC (Idle Speed Control) unit
13. Battery
14. ECU (Engine Control Unit)
15. Fuel injector
16. Ignition coil
Summary of Contents for N MAX GPD150-A 2015
Page 1: ...2015 SERVICE MANUAL GPD150 A 2DP F8197 E0 ...
Page 6: ......
Page 8: ......
Page 38: ...BASIC SERVICE INFORMATION 1 29 ...
Page 46: ...SPECIAL TOOLS 1 37 ...
Page 61: ...TIGHTENING TORQUES 2 14 Cylinder head tightening sequence 4 2 5 3 1 6 ...
Page 67: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 20 ...
Page 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 23 EAS30021 LUBRICATION DIAGRAMS 1 3 2 ...
Page 71: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 24 1 Oil strainer 2 Oil pump assembly 3 Camshaft ...
Page 72: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25 3 2 1 4 ...
Page 74: ...COOLING SYSTEM DIAGRAMS 2 27 EAS20020 COOLING SYSTEM DIAGRAMS 8 5 7 6 4 3 2 1 7 7 6 5 4 3 2 1 ...
Page 88: ...CABLE ROUTING 2 41 Frame top view 9 A B C D 1 2 9 6 5 3 3 9 4 4 5 6 7 8 9 10 11 12 13 E ...
Page 90: ...CABLE ROUTING 2 43 Hydraulic unit top and right side view A B C 1 1 2 2 3 3 4 5 5 6 6 7 4 ...
Page 94: ...CABLE ROUTING 2 47 Fuel tank right side view A B D 1 2 2 1 3 3 4 4 5 5 7 A 6 8 9 9 C ...
Page 96: ...CABLE ROUTING 2 49 Fuel tank top and bottom view A 1 B 3 B 2 C 4 ...
Page 102: ...CABLE ROUTING 2 55 ...
Page 104: ...CHECKING THE SWITCHES LIGHTS AND SIGNALS 3 24 ADJUSTING THE HEADLIGHT BEAM 3 24 ...
Page 105: ......
Page 130: ...PERIODIC MAINTENANCE 3 25 ...
Page 136: ...GENERAL CHASSIS 1 4 3 a 1 ...
Page 148: ...GENERAL CHASSIS 5 4 15 1 b a ...
Page 220: ...STEERING HEAD 4 87 1 a b ...
Page 226: ...REAR SHOCK ABSORBER ASSEMBLIES AND SWINGARM 4 93 ...
Page 294: ...CRANKSHAFT 5 65 ...
Page 306: ...WATER PUMP 6 11 ...
Page 325: ......
Page 335: ...ELECTRIC STARTING SYSTEM 8 10 ...
Page 339: ...CHARGING SYSTEM 8 14 ...
Page 343: ...LIGHTING SYSTEM 8 18 ...
Page 381: ...FUEL INJECTION SYSTEM 8 56 ...
Page 385: ...FUEL PUMP SYSTEM 8 60 ...
Page 417: ...ABS ANTI LOCK BRAKE SYSTEM 8 92 ...
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