Fuel Injection System Components - Arctic Cat Cougar Service Manual

FUEL SYSTEM-FUEL-INJECTED MODELS
10. Bleed pressure from fuel lines slowly into
an absorbant towel before removing the hose.
11. Be prepared to plug detached fuel lines be-
fore disconnecting or removing any component.
12. Be sure that all the fuel lines and other parts
are connected before turning ON the main switch
or operating the fuel pump.
13. Do not use compressed air to clean system
components. The sensitive components can be
easily damaged.
14. Do not operate the system (or fuel pump)
dry. Gasoline provides both cooling and lubrica-
tion for some parts.
15. Make sure that components of the system
are protected from both mechanical and electri-
cal shocks. Impacts that might occur in an acci-
dent or while servicing may physically break
printed circuits or other small components. Static
Ignition
timing
Injection
timing
Throttle
position
Coolant
temperature
Intake air
temperature
Sensors
Electronic
control unit
(ECU)
Barometric
pressure
D
229
electricity discharged when you touch a compo-
nent can also damage parts.
FUEL INJECTION SYSTEM
COMPONENTS
The fuel injection system consists of a fuel
pump, fuel filters, one fuel injector per cylinder,
fuel lines, fuel pressure regulator, throttle hous-
ing assembly and electronic control hardware.
Refer to
Figures 1
and 2 for drawings typical of
the fuel delivery system and the electronic con-
trol system.
The fuel injection system consists of the fol-
lowing subsystems: air flow system, fuel flow
system, electronic control system and electrical
system.
Fuel pump
Fuel pump
relay
Injector
dropping
resistor