Electronic Fuel Injection - Arctic Cat 08 ATV Service Manual

FOR ARCTIC CAT ATV DISCOUNT PARTS CALL 606-678-9623 OR 606-561-4983
Fuel/Lubrication/
Cooling
NOTE: Arctic Cat recommends the use of new
gaskets, lock nuts, and seals and lubricating all
internal components
engine/transmission.
NOTE: Some photographs and illustrations used
in this section are used for clarity purposes only
and are not designed to depict actual conditions.
NOTE: Critical torque specifications are located
in Section 1.
SPECIAL TOOLS
A number of special tools must be available to the
technician when performing service procedures in this
section.
Description
Oil Pressure Test Kit
Seal Removal Tool
Tachometer
NOTE: Special tools are available from the Arctic
Cat Service Parts Department.

Electronic Fuel Injection

! WARNING
Whenever any maintenance or inspection is per-
formed on the fuel system during which there may
be fuel leakage, there should be no welding, smok-
ing, open flames, etc., in the area.
TROUBLESHOOTING
1. Verify that the electric fuel pump is operating by
listening for a "whirring" sound for 2-3 seconds
after the ignition switch is turned to the ON posi-
tion. If no sound can be heard, see Electric Fuel
Pump/Fuel Level Sensor in this section.
2. Check for a flashing EFI icon on the LCD. If EFI
is flashing, see ECU Error Codes in Section 5.
3. Make sure there is sufficient, clean gas in the gas
tank.
4. Verify that the battery is sufficiently charged to
crank the engine over at normal speed.
www.mymowerparts.com
4-2
when servicing the
p/n
0644-495
0644-072
0644-275
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NOTE: A fully-charged battery must read at
least 12.5 DC volts - no load. A minimum of 8.5 DC
volts under load is necessary for the EFI system to
operate.
5. Check the air filter housing and air filter for con-
tamination. Clean or replace as necessary (see
Section 2).
REMOVING
! WARNING
Whenever the gasline hoses are removed (other
than for pressure testing), the battery must be dis-
connected to prevent inadvertent activation of the
electronic fuel pump.
1. Remove the front rack and body panel (see Section
8).
2. Disconnect the wires from the IAT sensor; then
loosen the clamp and remove the inlet air boot
from the air filter housing.
3. Loosen the clamp on the throttle body intake boot;
then remove the air filter housing from the ATV.
4. Disconnect the three wiring connectors from the
sensors on the throttle body; then remove the cap
screws securing the throttle body to the intake
manifold.
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GZ379
GZ091A
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