FEATURES
1-2
EAS20170
FEATURES
EAS30340
OUTLINE OF THE FI SYSTEM
The main function of a fuel supply system is to provide fuel to the combustion chamber at the opti-
mum air-fuel ratio in accordance with the engine operating conditions and the atmospheric tempera-
ture. 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
conditions, 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 con-
ditions of the engine.
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 man-
ner. To accommodate 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.
1. Intake air temperature sensor
2. Engine trouble warning light
3. Air induction system solenoid
4. Atmospheric pressure sensor
5. Intake air pressure sensor
6. Intake funnel servo motor
7. Secondary injectors
8. Throttle servo motor
9. Throttle position sensor
10.Accelerator position sensor
11.Primary injectors
12.Fuel pump
13.Lean angle sensor
14.Relay unit (fuel pump relay)
15.O
2
sensor
16.Rear speed sensor
17.Coolant temperature sensor
18.Crankshaft position sensor
19.Spark plugs
20.Ignition coils
21.Cylinder identification sensor
22.ECU (engine control unit)
Summary of Contents for YZF-R1 2012
Page 1: ...SERVICE MANUAL YZF R1 B 2012 1KB 28197 E0 ...
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Page 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29 EAS20410 LUBRICATION DIAGRAMS ...
Page 72: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 31 ...
Page 74: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 33 ...
Page 76: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 35 ...
Page 77: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 36 1 Main axle 2 Oil water pump assembly ...
Page 78: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 37 ...
Page 79: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 38 1 Main axle 2 Oil delivery pipe 2 3 Drive axle ...
Page 80: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 39 ...
Page 82: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 41 ...
Page 84: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 43 ...
Page 85: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 44 1 Balancer shaft 2 Crankshaft ...
Page 86: ...COOLING SYSTEM DIAGRAMS 2 45 EAS20420 COOLING SYSTEM DIAGRAMS ...
Page 88: ...COOLING SYSTEM DIAGRAMS 2 47 ...
Page 89: ...COOLING SYSTEM DIAGRAMS 2 48 1 Radiator cap 2 Radiator 3 Radiator fan 4 Oil cooler ...
Page 90: ...CABLE ROUTING 2 49 EAS20430 CABLE ROUTING ...
Page 92: ...CABLE ROUTING 2 51 ...
Page 94: ...CABLE ROUTING 2 53 ...
Page 96: ...CABLE ROUTING 2 55 ...
Page 98: ...CABLE ROUTING 2 57 ...
Page 100: ...CABLE ROUTING 2 59 ...
Page 102: ...CABLE ROUTING 2 61 ...
Page 104: ...CABLE ROUTING 2 63 ...
Page 106: ...CABLE ROUTING 2 65 ...
Page 108: ...CABLE ROUTING 2 67 ...
Page 110: ...CABLE ROUTING 2 69 ...
Page 112: ...CABLE ROUTING 2 71 ...
Page 114: ...CABLE ROUTING 2 73 ...
Page 116: ...CABLE ROUTING 2 75 ...
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Page 156: ...PERIODIC MAINTENANCE 3 37 ...
Page 248: ...CHAIN DRIVE 4 89 ...
Page 263: ...ENGINE REMOVAL 5 12 Installed depth of gasket c 3 5 mm 0 14 in ...
Page 295: ...PICKUP ROTOR 5 44 Yamaha bond No 1215 Three Bond No 1215 90890 85505 ...
Page 350: ...TRANSMISSION 5 99 ...
Page 366: ...WATER PUMP 6 15 ...
Page 388: ...AIR INDUCTION SYSTEM 7 21 EAS27040 AIR INDUCTION SYSTEM ...
Page 394: ...AIR INDUCTION SYSTEM 7 27 ...
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Page 398: ...IGNITION SYSTEM 8 1 EAS27090 IGNITION SYSTEM EAS27110 CIRCUIT DIAGRAM ...
Page 404: ...ELECTRIC STARTING SYSTEM 8 7 EAS27160 ELECTRIC STARTING SYSTEM EAS27170 CIRCUIT DIAGRAM ...
Page 410: ...CHARGING SYSTEM 8 13 EAS27200 CHARGING SYSTEM EAS27210 CIRCUIT DIAGRAM ...
Page 413: ...CHARGING SYSTEM 8 16 ...
Page 414: ...LIGHTING SYSTEM 8 17 EAS27240 LIGHTING SYSTEM EAS27250 CIRCUIT DIAGRAM ...
Page 418: ...SIGNALING SYSTEM 8 21 EAS27270 SIGNALING SYSTEM EAS27280 CIRCUIT DIAGRAM ...
Page 425: ...SIGNALING SYSTEM 8 28 ...
Page 426: ...COOLING SYSTEM 8 29 EAS27300 COOLING SYSTEM EAS27310 CIRCUIT DIAGRAM ...
Page 429: ...COOLING SYSTEM 8 32 ...
Page 430: ...FUEL INJECTION SYSTEM 8 33 EAS27330 FUEL INJECTION SYSTEM EAS27340 CIRCUIT DIAGRAM ...
Page 503: ...FUEL INJECTION SYSTEM 8 106 ...
Page 504: ...FUEL PUMP SYSTEM 8 107 EAS27550 FUEL PUMP SYSTEM EAS27560 CIRCUIT DIAGRAM ...
Page 508: ...IMMOBILIZER SYSTEM 8 111 EAS27640 IMMOBILIZER SYSTEM EAS27650 CIRCUIT DIAGRAM ...
Page 517: ...IMMOBILIZER SYSTEM 8 120 ...
Page 518: ...ELECTRICAL COMPONENTS 8 121 EAS27972 ELECTRICAL COMPONENTS ...
Page 520: ...ELECTRICAL COMPONENTS 8 123 ...
Page 522: ...ELECTRICAL COMPONENTS 8 125 EAS27980 CHECKING THE SWITCHES ...
Page 546: ...ELECTRICAL COMPONENTS 8 149 ...
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