Arctic Cat Cougar Service Manual page 259

FUEL SYSTEM-FUEL-INJECTED MODELS
Removal/installation
Refer to
Figure
27 for this procedure.
1. Detach the ground cable from the negative
terminal of the battery.
®
CAUTION
Clean dirt and foreign matter from the
area around the fuel injectors and fuel
rail prior to removing the fuel injectors.
Any dirt or foreign matter that falls into
the fuel or the injector openings in the
throttle body may cause engine damage.
WARNING
Be prepared to plug fuel lines before
gasoline begins to leak from detached
hoses. The gasoline may still be under
pressure. Gasoline is a fire hazard.
THROTTLE BODY ASSEMBLY
10
4--._
V"'-"''-....._
3
-J
~---5
7
wr.~-~~~
..... _....,_r
" I
- 1
1. Throttle body assembly 6. Fuel rail
2. Fuel pressure regulator 7. Fuel inletfitting
3. Fuel injector
8. 0-ring
4. 0-ring
9. Coolant hose
5. Insulator
1 0. Throttle position sensor
249
2. Detach hose from the inlet fitting (7, Figure
27) and the vent and return fittings of the regu-
lator (2,
Figure
27).
3. Mark the original location, then detach elec-
trical connectors from the injectors.
4. Remove the two screws attaching the fuel rail
( 6,
Figure
27) to the throttle bodies ( 1,
Figure
27).
5. Lift the fuel rail from the injectors and throttle
body assembly.
6. The injectors can be lifted from the throttle
body.
7. Remove the 0-ring and insulator from each
injector.
8. Reinstall by reversing the procedure. Make
sure that all seals are in good condition. Lubri-
cate 0-rings and seals with oil before assem-
bling. Tighten retaining screws securely.
9. Attach the fuel delivery hose to the inlet fit-
ting (7,
Figure
27) as follows.
a. Push the fuel delivery hose onto the inlet
fitting (7,
Figure
27) until the end of the
hose is 20-30 mm (0.8-1.2 in.) past the end
of the fitting.
b. Position the hose clamp 3-7 mm (0.12-0.28
in.) from the end of the hose.
c. Tighten the clamp securely.
10. Purge air from the fuel system as described
in this chapter.
WARNING
Check for fuel system leaks before start-
ing the engine. Any leakage is hazard-
ous .
Disassembly and assembly
Refer to
Figure
27 for this procedure. The
injectors, fuel rail and regulator are available
separately. Be sure all seals are in good condition
when assembling.
CAUTION
Most commercial carburetor cleaners
will damage rubber 0-rings, seals and
plastic parts. Be sure all parts that could