2011 Arctic Cat 425 ATV Service Manual-PDF Download

Page 65

Fuel/Lubrication/Cooling NOTE: Arctic Cat recommends the use of new gaskets, lock nuts, and seals and lubricating all internal components when servicing the engine/transmission.

! WARNING Gasoline may be under pressure. Place an absorbent towel under the connector to absorb any gasoline spray when disconnecting.

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.

SPECIAL TOOLS A number of special tools must be available to the technician when performing service procedures in this section. Refer to the current Special Tools Catalog for the appropriate tool description. Description

p/n

Oil Pressure Test Kit

0644-495

Tachometer

0644-275

NOTE: Special tools are available from the Arctic Cat Service Parts Department. FI691A

Electronic Fuel Injection

4. Disconnect the MAP/IAT sensor connector, ISC connector, and TPS connector; then loosen the clamp securing the throttle body to the intake manifold boot and slide the throttle body out.

! WARNING Whenever any maintenance or inspection is performed on the fuel system during which there may be fuel leakage, there should be no welding, smoking, open flames, etc., in the area.

TROUBLESHOOTING 1. Verify that the electric fuel pump is operating by listening for a “whirring” sound for several seconds after the ignition switch is turned to the ON position. 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 the Electrical System section. 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. 5. Check the air filter housing and air filter for contamination. Clean or replace as necessary (see Periodic Maintenance section).

FI528A

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. Place the intake housing into the boots and tighten the boot clamps securely.

Throttle Body

4. Install the gas tank; then the heat shields and seat.

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).

Throttle Cable Free-Play To adjust throttle cable free-play, see Periodic Maintenance.

64

Manual Table of Contents


Turn static files into dynamic content formats.

Create a flipbook
Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.