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VIEW 1. (NO FLOW)
VIEW 2. (FLOW)
AIR INDUCTION SYSTEM
CARB
EAS00507
AIR INDUCTION SYSTEM
AIR INJECTION
The air induction system burns unburned ex-
haust gases by injecting fresh air (secondary
air) into the exhaust port, reducing the emission
of hydrocarbons.
When there is negative 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).
EAS00508
AIR CUTOFF VALVE
The air cutoff valve is operated by the intake gas
pressure through the piston valve diaphragm.
Normally, the air cutoff valve is open to allow
fresh air to flow into the exhaust port. During
sudden deceleration (the throttle valve sudden-
ly closes), negative pressure is generated and
the air cutoff valve is closed in order to prevent
after-burning.
Additionally, at high engine speeds and when
the pressure decreases, the air cutoff valve au-
tomatically closes to guard against a loss of per-
formance due to self-EGR.
VIEW 1. (NO FLOW)
When decelerating (the throttle closes), the valve will
close.
VIEW 2. (FLOW)
During normal operation the valve is open.
A
From the air cleaner
B
To the reed valve
C
To the carburetor joint
Содержание FZS1000N
Страница 1: ......
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Страница 9: ...GEN INFO ...
Страница 17: ......
Страница 19: ...SPEC ...
Страница 40: ...2 21 TIGHTENING TORQUES SPEC Crankcase tightening sequence ...
Страница 46: ...2 27 COOLING SYSTEM DIAGRAMS SPEC 1 Radiator cap 2 Thermostat 3 Thermo unit ...
Страница 47: ...2 28 COOLING SYSTEM DIAGRAMS SPEC 1 Radiator ...
Страница 50: ...2 31 LUBRICATION DIAGRAMS SPEC 1 Intake camshaft 2 Exhaust camshaft 3 Oil cooler 4 Oil strainer 5 Oil pump ...
Страница 51: ...2 32 LUBRICATION DIAGRAMS SPEC 1 Intake camshaft 2 Exhaust camsahft 3 Oil filter cartridge 4 Oil level switch ...
Страница 52: ...2 33 LUBRICATION DIAGRAMS SPEC 1 Cylinder head 2 Crankshaft ...
Страница 53: ...2 34 LUBRICATION DIAGRAMS SPEC 1 Main axle 2 Oil delivery pipe 3 Drive axle ...
Страница 123: ......
Страница 203: ...ENG ...
Страница 289: ......
Страница 291: ...COOL ...
Страница 305: ...CARB ...
Страница 323: ...ELEC EXUP SYSTEM 8 51 CIRCUT DIAGRAM 8 51 TROUBLESHOOTING 8 52 SELF DIAGNOSIS 8 55 TROUBLESHOOTING 8 57 ...
Страница 358: ...8 35 SIGNAL SYSTEM ELEC EAS00793 SIGNAL SYSTEM CIRCUIT DIAGRAM ...
Страница 393: ......
Страница 394: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN PRINTED IN U S A ...