70
Fuel/Lubrication/
Cooling
TROUBLESHOOTING
1. Verify that the electric fuel pump is operating by lis-
tening for a “whirring” sound for several seconds
after the ignition switch is turned to the ON position.
If no sound can be heard, see Electrical System - EFI
Sensors/Components.
2. Check for a flashing EFI icon on the LCD. If EFI is
flashing, see EFI Diagnostic System in the Electrical
System section.
3. Make sure there is sufficient, clean gas in the gas
tank.
SPECIAL TOOLS
A number of special tools must be available to the techni-
cian when performing service procedures in this section.
Refer to the current Special Tools Catalog for the appro-
priate tool description.
NOTE: When indicated for use, each special tool
will be identified by its specific name, as shown in the
chart below, and capitalized.
NOTE: Special tools are available from the Arctic
Cat Service Department.
Throttle Body
REMOVING
1. Remove the heat shields and seat.
2. Disconnect the negative battery cable; then remove
the gas tank (see Gas Tank in this section).
3. Loosen the clamp securing the intake boot to the
throttle body; then loosen the clamp securing the
intake boot to the intake housing and slide the intake
housing rearward.
FI691A
4. Disconnect the TMAP sensor connector, ISC con-
nector, and TPS connector; then loosen the clamp
securing the throttle body to the intake manifold boot
and slide the throttle body out.
FI528C
5. Remove the throttle arm cover and loosen the throttle
cable jam nut; then disconnect the throttle cable and
remove the throttle body.
INSTALLING
1. Connect the throttle cable to the throttle arm; then
install the throttle cable housing in the throttle body
and tighten the jam nut. Install the throttle arm cover
and secure with two machine screws.
2. Place the throttle body into the intake manifold boot
and tighten the boot clamp securely.
3. Connect the TPS connector, ISC connector, and the
TMAP sensor connector.
4. Place the intake housing into the boots and tighten
the boot clamps securely.
5. Install the gas tank; then the heat shields and seat.
6. Check throttle cable free-play (see Periodic Mainte-
nance/Tune-Up).
NOTE: If the throttle body, ECM, TPS, or ISC are
replaced, the EFI system must be synchronized. Use
the following procedure.
1. With the key off, depress the throttle lever to Wide
Open Throttle (WOT).
2. Place the ignition key in the ON position and wait for
10 seconds.
3. Release the throttle lever and wait an additional 10
seconds.
! WARNING
Whenever any maintenance or inspection is performed
on the fuel system during which there may be fuel leak-
age, there should be no welding, smoking, open flames,
etc., in the area.
Description
p/n
Oil Pressure Test Kit
0644-495
Tachometer
0644-275
Fuel Pressure Test Kit
0644-571
! WARNING
Gasoline may be under pressure. Place an absorbent
towel under the connector to absorb any gasoline spray
when disconnecting.
Содержание XC 450 2016
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