FEATURES
1-3
EAS28P1032
FI SYSTEM
The fuel pump delivers fuel to the fuel injector via the fuel filter. The pressure regulator maintains the
fuel pressure that is applied to the fuel injector at only 324 kPa (3.24 kgf/cm², 46.1 psi). Accordingly,
when the energizing signal from the ECU energizes the fuel injector, the fuel passage opens, causing
the fuel to be injected into the intake manifold only during the time the passage remains open. There-
fore, the longer the length of time the fuel injector is energized (injection duration), the greater the vol-
ume of fuel that is supplied. Conversely, the shorter the length of time the fuel injector is energized
(injection duration), the lesser the volume of fuel that is supplied.
The injection duration and the injection timing are controlled by the ECU. Signals that are input from the
throttle position sensor, crankshaft position sensor, intake air pressure sensor, intake air temperature
sensor, coolant temperature sensor, lean angle sensor and speed sensor enable the ECU to determine
the injection duration. The injection timing is determined through the signals from the crankshaft posi-
tion sensor. As a result, the volume of fuel that is required by the engine can be supplied at all times in
accordance with the driving conditions.
Illustration is for reference only.
C
14
2
1
3
5
6
7
8
9
10
13
12
11
4
A
B
1. Fuel pump
2. Fuel injector
3. Ignition coil
4. ECU (engine control unit)
5. Speed sensor
6. Lean angle sensor
7. Coolant temperature sensor
8. Crankshaft position sensor
9. Intake air pressure sensor
10. Throttle body
11. ISC (idle speed control) unit
12. Throttle position sensor
13. Intake air temperature sensor
14. Air filter case
A. Fuel system
B. Air system
C. Control system
Summary of Contents for Grizzly550
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Page 11: ...FEATURES 1 4 techsparkstudio com ...
Page 55: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 26 techsparkstudio com ...
Page 58: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29 1 2 3 4 5 ...
Page 60: ...COOLING SYSTEM DIAGRAMS 2 31 EAS20420 COOLING SYSTEM DIAGRAMS 1 2 3 8 7 6 5 4 ...
Page 68: ...CABLE ROUTING 2 39 A A B B C C A A B B C C A C D E E F B 1 1 2 2 3 3 3 4 5 5 6 6 7 8 ...
Page 74: ...CABLE ROUTING 2 45 A C D B B B B E E B B E E C D A 1 2 2 2 3 3 A B B C C D E E F 4 4 4 ...
Page 76: ...CABLE ROUTING 2 47 ...
Page 79: ...techsparkstudio com ...
Page 116: ...ELECTRICAL SYSTEM 3 37 ...
Page 119: ...techsparkstudio com ...
Page 136: ...FRONT WHEELS 4 17 ...
Page 188: ...REAR ARMS AND REAR SHOCK ABSORBER ASSEMBLIES 4 69 7 6 7 6 4 3 5 2 8 8 1 ...
Page 230: ...AC MAGNETO AND STARTER CLUTCH 5 39 1 ...
Page 246: ...PRIMARY AND SECONDARY SHEAVES 5 55 ...
Page 292: ...WATER PUMP 6 11 ...
Page 302: ...THROTTLE BODY 7 9 ...
Page 334: ...REAR CONSTANT VELOCITY SHAFT ASSEMBLIES FINAL DRIVE ASSEMBLY AND REAR DRIVE SHAFT 8 31 ...
Page 337: ...techsparkstudio com ...
Page 351: ...CHARGING SYSTEM 9 14 techsparkstudio com ...
Page 355: ...LIGHTING SYSTEM 9 18 techsparkstudio com ...
Page 363: ...SIGNALING SYSTEM 9 26 techsparkstudio com ...
Page 391: ...FUEL INJECTION SYSTEM 9 54 techsparkstudio com ...
Page 395: ...FUEL PUMP SYSTEM 9 58 techsparkstudio com ...
Page 411: ...EPS ELECTRIC POWER STEERING SYSTEM for YFM5FGP YFM7FGP 9 74 techsparkstudio com ...
Page 414: ...ELECTRICAL COMPONENTS 9 77 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ...
Page 436: ...ELECTRICAL COMPONENTS 9 99 ...