AIR INDUCTION SYSTEM
7-10
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.
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.
• Pipes
Cracks/damage
→
Replace.
2. Check:
• Reed valve “1”
• Reed valve stopper
• Reed valve seat
Cracks/damage
→
Replace the reed valve.
3. Measure:
• Reed valve bending limit “a”
Out of specification
→
Replace the reed
valve.
4. Check:
• Air cut-off valve
Cracks/damage
→
Replace.
5. Check
• Air induction system solenoid
Refer to "CHECKING THE AIR INDUC-
TION SYSTEM SOLENOID" on page 8-98.
A. From the air cleaner
B. To the cylinder head
Reed valve bending limit
0.4 mm (0.016 in)
Содержание YZFR1W 2007
Страница 1: ...2007 MOTORCYCLE SERVICE MANUAL Model YZFR1W 4C8281972000 4C8281972000...
Страница 50: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 22...
Страница 53: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25 EAS20410 LUBRICATION DIAGRAMS...
Страница 55: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27...
Страница 57: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29...
Страница 59: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 31 A A A A...
Страница 60: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 32 1 Main axle 2 Oil delivery pipe 3 Drive axle...
Страница 61: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 33...
Страница 62: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 34 1 Cylinder head 2 Crankshaft...
Страница 63: ...COOLING SYSTEM DIAGRAMS 2 35 EAS20420 COOLING SYSTEM DIAGRAMS...
Страница 64: ...COOLING SYSTEM DIAGRAMS 2 36 1 Water pump 2 Radiator 3 Radiator fan...
Страница 65: ...COOLING SYSTEM DIAGRAMS 2 37...
Страница 66: ...COOLING SYSTEM DIAGRAMS 2 38 1 Radiator cap 2 Radiator 3 Oil cooler 4 Thermostat...
Страница 67: ...CABLE ROUTING 2 39 EAS20430 CABLE ROUTING...
Страница 69: ...CABLE ROUTING 2 41...
Страница 71: ...CABLE ROUTING 2 43...
Страница 73: ...CABLE ROUTING 2 45...
Страница 75: ...CABLE ROUTING 2 47...
Страница 77: ...CABLE ROUTING 2 49...
Страница 79: ...CABLE ROUTING 2 51...
Страница 81: ...CABLE ROUTING 2 53...
Страница 171: ...HANDLEBARS 4 49...
Страница 197: ...CHAIN DRIVE 4 75...
Страница 200: ...CHECKING THE TRANSMISSION 5 90 INSTALLING THE TRANSMISSION 5 91...
Страница 292: ...TRANSMISSION 5 92 4 Check Transmission Rough movement Repair NOTE Oil each gear shaft and bearing thoroughly...
Страница 293: ...TRANSMISSION 5 93...
Страница 314: ...THROTTLE BODIES 7 8...
Страница 317: ...AIR INDUCTION SYSTEM 7 11...
Страница 320: ...IGNITION SYSTEM 8 1 EAS27090 IGNITION SYSTEM EAS27110 CIRCUIT DIAGRAM...
Страница 324: ...ELECTRIC STARTING SYSTEM 8 5 EAS27160 ELECTRIC STARTING SYSTEM EAS27170 CIRCUIT DIAGRAM...
Страница 330: ...CHARGING SYSTEM 8 11 EAS27200 CHARGING SYSTEM EAS27210 CIRCUIT DIAGRAM...
Страница 331: ...CHARGING SYSTEM 8 12 2 AC magneto 3 Rectifier regulator 4 Main fuse 8 Battery 88 Ground 89 Battery negative lead...
Страница 333: ...CHARGING SYSTEM 8 14...
Страница 334: ...LIGHTING SYSTEM 8 15 EAS27240 LIGHTING SYSTEM EAS27250 CIRCUIT DIAGRAM...
Страница 338: ...SIGNALING SYSTEM 8 19 EAS27270 SIGNALING SYSTEM EAS27280 CIRCUIT DIAGRAM...
Страница 344: ...COOLING SYSTEM 8 25 EAS27300 COOLING SYSTEM EAS27310 CIRCUIT DIAGRAM...
Страница 347: ...COOLING SYSTEM 8 28...
Страница 348: ...FUEL INJECTION SYSTEM 8 29 EAS27330 FUEL INJECTION SYSTEM EAS27340 CIRCUIT DIAGRAM...
Страница 384: ...FUEL PUMP SYSTEM 8 65 EAS27550 FUEL PUMP SYSTEM EAS27560 CIRCUIT DIAGRAM...
Страница 388: ...IMMOBILIZER SYSTEM 8 69 EAS27640 IMMOBILIZER SYSTEM EAS27650 CIRCUIT DIAGRAM...
Страница 396: ...ELECTRICAL COMPONENTS 8 77 EAS27970 ELECTRICAL COMPONENTS...
Страница 398: ...ELECTRICAL COMPONENTS 8 79...
Страница 400: ...ELECTRICAL COMPONENTS 8 81 EAS27980 CHECKING THE SWITCHES...
Страница 420: ...ELECTRICAL COMPONENTS 8 101...
Страница 429: ...Yamaha Motor Canada Ltd 480 Gordon Baker Road Toronto ON M2H 3B4...