AIR INDUCTION SYSTEM
7-25
EAS27060
CHECKING THE AIR INDUCTION SYSTEM
Air injection
The air induction system burns unburned
exhaust gases by injecting fresh air (second-
ary air) into the exhaust port, reducing the
emission of hydrocarbons. When there is neg-
ative pressure at the exhaust port, the reed
valve opens, allowing secondary air to flow into
the exhaust port. The required temperature for
burning the unburned exhaust gases is
approximately 600 to 700
°
C (1112 to 1292
°
F).
Air cut-off valve
The air cut-off valve is controlled by the signals
from the ECU in accordance with the combus-
tion conditions. Ordinarily, the air cut-off valve
opens to allow the air to flow during idle and
closes to cut-off the flow when the vehicle is
being driven. However, if the coolant tempera-
ture is below the specified value, the air cut-off
valve remains open and allows the air to flow
into the exhaust pipe until the temperature
becomes higher than the specified value.
1. Check:
• Hoses
Loose connections
→
Connect properly.
Cracks/damage
→
Replace.
2. Check:
• Reed valve
• Reed valve stopper
• Reed valve base
Cracks/damage
→
Replace the reed
valve assembly.
3. Measure:
• Reed valve bending limit “a”
Out of specification
→
Replace the reed
valve.
A. From the air filter case
B. To the cylinder head
Reed valve bending limit
0.4 mm (0.016 in)
Содержание YZF-R1 2012
Страница 1: ...SERVICE MANUAL YZF R1 B 2012 1KB 28197 E0 ...
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Страница 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29 EAS20410 LUBRICATION DIAGRAMS ...
Страница 72: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 31 ...
Страница 74: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 33 ...
Страница 76: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 35 ...
Страница 77: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 36 1 Main axle 2 Oil water pump assembly ...
Страница 78: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 37 ...
Страница 79: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 38 1 Main axle 2 Oil delivery pipe 2 3 Drive axle ...
Страница 80: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 39 ...
Страница 82: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 41 ...
Страница 84: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 43 ...
Страница 85: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 44 1 Balancer shaft 2 Crankshaft ...
Страница 86: ...COOLING SYSTEM DIAGRAMS 2 45 EAS20420 COOLING SYSTEM DIAGRAMS ...
Страница 87: ...COOLING SYSTEM DIAGRAMS 2 46 1 Oil water pump assembly 2 Radiator 3 Radiator fan 4 Thermostat 5 Oil cooler ...
Страница 88: ...COOLING SYSTEM DIAGRAMS 2 47 ...
Страница 89: ...COOLING SYSTEM DIAGRAMS 2 48 1 Radiator cap 2 Radiator 3 Radiator fan 4 Oil cooler ...
Страница 90: ...CABLE ROUTING 2 49 EAS20430 CABLE ROUTING ...
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Страница 116: ...CABLE ROUTING 2 75 ...
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Страница 156: ...PERIODIC MAINTENANCE 3 37 ...
Страница 248: ...CHAIN DRIVE 4 89 ...
Страница 263: ...ENGINE REMOVAL 5 12 Installed depth of gasket c 3 5 mm 0 14 in ...
Страница 289: ...GENERATOR 5 38 4 Apply Sealant onto the stator coil lead grommet 1 Yamaha bond No 1215 Three Bond No 1215 90890 85505 ...
Страница 295: ...PICKUP ROTOR 5 44 Yamaha bond No 1215 Three Bond No 1215 90890 85505 ...
Страница 350: ...TRANSMISSION 5 99 ...
Страница 366: ...WATER PUMP 6 15 ...
Страница 388: ...AIR INDUCTION SYSTEM 7 21 EAS27040 AIR INDUCTION SYSTEM ...
Страница 394: ...AIR INDUCTION SYSTEM 7 27 ...
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Страница 398: ...IGNITION SYSTEM 8 1 EAS27090 IGNITION SYSTEM EAS27110 CIRCUIT DIAGRAM ...
Страница 404: ...ELECTRIC STARTING SYSTEM 8 7 EAS27160 ELECTRIC STARTING SYSTEM EAS27170 CIRCUIT DIAGRAM ...
Страница 410: ...CHARGING SYSTEM 8 13 EAS27200 CHARGING SYSTEM EAS27210 CIRCUIT DIAGRAM ...
Страница 411: ...CHARGING SYSTEM 8 14 2 AC magneto 3 Rectifier regulator 4 Joint 5 Main fuse 9 Battery 10 Engine ground 74 Engine ground ...
Страница 413: ...CHARGING SYSTEM 8 16 ...
Страница 414: ...LIGHTING SYSTEM 8 17 EAS27240 LIGHTING SYSTEM EAS27250 CIRCUIT DIAGRAM ...
Страница 418: ...SIGNALING SYSTEM 8 21 EAS27270 SIGNALING SYSTEM EAS27280 CIRCUIT DIAGRAM ...
Страница 425: ...SIGNALING SYSTEM 8 28 ...
Страница 426: ...COOLING SYSTEM 8 29 EAS27300 COOLING SYSTEM EAS27310 CIRCUIT DIAGRAM ...
Страница 429: ...COOLING SYSTEM 8 32 ...
Страница 430: ...FUEL INJECTION SYSTEM 8 33 EAS27330 FUEL INJECTION SYSTEM EAS27340 CIRCUIT DIAGRAM ...
Страница 503: ...FUEL INJECTION SYSTEM 8 106 ...
Страница 504: ...FUEL PUMP SYSTEM 8 107 EAS27550 FUEL PUMP SYSTEM EAS27560 CIRCUIT DIAGRAM ...
Страница 508: ...IMMOBILIZER SYSTEM 8 111 EAS27640 IMMOBILIZER SYSTEM EAS27650 CIRCUIT DIAGRAM ...
Страница 517: ...IMMOBILIZER SYSTEM 8 120 ...
Страница 518: ...ELECTRICAL COMPONENTS 8 121 EAS27972 ELECTRICAL COMPONENTS ...
Страница 520: ...ELECTRICAL COMPONENTS 8 123 ...
Страница 522: ...ELECTRICAL COMPONENTS 8 125 EAS27980 CHECKING THE SWITCHES ...
Страница 546: ...ELECTRICAL COMPONENTS 8 149 ...
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