FUEL INJECTOR
The fuel injector consists of a solenoid, piston, needle valve and a filter.
The injector is a small electromagnetic injection nozzle that injects fuel into the carburettor according to the sig-
nal coming from the ECU.
When the solenoid is agitated by the ECU, it becomes an electromagnet and attracts the piston. At the same time,
the needle valve incorporated in the piston opens and the injector, under pressure of the fuel, injects the fuel in a
conical dispersion. Given that the opening of the needle valve is constant, the volume of fuel injected at any one
time is dependent on the time that the solenoid is agitated (injection time).
FUEL PRESSURE REGULATOR
The fuel pressure regulator is a diaphragm pressure release valve that consists of a diaphragm, spring and valve.
It always maintains the pressure of the fuel sent to the injector at 3.0 kg/cm
2
(300 kPa).
When the pressure of the fuel rises above 3.0 kg/cm
2
(300 kPa) the excess fuel opens the valve of the regulator
and therefore can return to the fuel tank.
- 6 -
Air intake injection system
D
Summary of Contents for F4 1000 S
Page 1: ......
Page 3: ...Motorcycle workshop manual MV AGUSTA F4 1000...
Page 6: ......
Page 7: ...1 General description A SECTION A Revision 0...
Page 16: ...10 General description A...
Page 17: ...B 1 Maintenance SECTION B Revision 1...
Page 49: ...Maintenance 33 B Maintenance FUEL PUMP ASSEMBLY...
Page 107: ...1 Bodywork C SECTION C Revision 0...
Page 114: ...8 Bodywork C TAIL UNIT...
Page 118: ...12 Bodywork C FUEL TANK...
Page 126: ...AIR INTAKE SYSTEM 20 Bodywork C...
Page 131: ...HEAT SHIELD Bodywork 25 C...
Page 134: ...28 Bodywork C MUDGUARD CENTRAL SPOILER RADIATOR PROTECTION Right side Left side...
Page 137: ...Air intake injection system 1 D SECTION D Revision 1...
Page 156: ...20 Air intake injection system D...
Page 157: ...Electrical system 1 E SECTION E Revision 1...
Page 161: ...5 Electrical system E 5A 5C 5B ELECTRICAL DIAGRAM F4 1000...
Page 204: ...48 Electrical system E...
Page 205: ...1 F Suspension and wheels SECTION F Revision 0...
Page 285: ...Frame 1 G SECTION G Revision 1...
Page 318: ...34 Frame G...
Page 324: ...40 Frame G...
Page 347: ...H 1 Brakes SECTION H Revision 0...
Page 372: ...26 Brakes H...
Page 373: ...Cooling system SECTION L Revision 0 L 1...
Page 401: ...Special tools 1 M SECTION M Revision 1...
Page 404: ...Special tools M 4...
Page 406: ...Special tools M 6...
Page 408: ...Special tools M 8...
Page 410: ...Special tools M 10...
Page 412: ...Special tools M 12...
Page 413: ...1 Tightening torques N SECTION N Revision 1...
Page 414: ...2 Tightening torques N...
Page 415: ...Tightening torques 3 N...
Page 416: ...4 Tightening torques N...
Page 417: ...Diagnostic 1 O SECTION O Revision 0...
Page 423: ...Analytical index 1 P SECTION P Revision 1...
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