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Snowmobile Arctic Cat (2002 year). Manual - part 68

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EFI Wiring Diagram (600 cc)

0686-733

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EFI Wiring Diagram (800 cc)

0686-846

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Fuel System

(Related Items)

Some components may vary from model to model.

The technician should use discretion and sound judg-

ment when removing and installing components.

Whenever any maintenance or inspection is made on

the fuel system in which fuel leakage may occur, there

should be no welding, smoking, or open flames in the

area.

NOTE: Some illustrations and photographs used

in this section are used for clarity purposes only
and are not designed to depict actual conditions.

Fuel System

(Related Items)

Table of Contents

Oil-Injection Pump

REMOVING

1. Turn the gas tank shut-off valve to the CLOSED

position.

2. If applicable, remove the carburetors.

3. Disconnect the oil-supply hose from the pump and

plug to prevent oil drainage.

4. Remove the two oil-delivery hoses from the

adapter plates.

5. Disconnect the oil-injection cable/control rod.

6. Remove the two screws, lock washers, and

washers securing the oil-injection pump and

retainer to the crankcase.

AB078

7. Pull the oil-injection pump away from the engine

and account for a gasket.

8. Turn the pump sideways; then remove the lower

union bolt. Account for two gaskets. Remove the

pump.

9. Remove the remaining union bolts securing the

check valves to the pump. Account for two

gaskets.

10. Remove the check valves. Account for two

gaskets.

INSTALLING

1. In turn on each front union bolt, install a gasket,

check valve, and gasket; then install on the oil-

injection pump.

2. Place the gasket and oil-injection pump near the

engine; then install the lower union bolt through a

gasket, check valve, and gasket.

3. Position the oil-injection pump on the engine

making sure the oil-injection pump gear is

correctly aligned with the oil-injection pump drive

gear.

4. Secure the pump with two screws, lock washers,

and washers. Tighten screws to 0.7 kg-m (5 ft-lb).

5. Connect the two oil-delivery hoses to the adapter

plates. Secure with clamps.

6. Connect the oil-injection cable/control rod to the

pump and secure.

7. Connect the oil-supply hose to the oil-injection

pump inlet fitting. Secure with the clamp.

8. Bleed the oil-injection system (see Bleeding Oil-

Injection System in this sub-section).

9. Check the oil-injection system synchronization

(see Synchronizing Oil-Injection Pump in this sub-

section). Tighten the jam nuts securely.

10. If applicable, install the carburetors.

11. Turn the shut-off valve to the OPEN position.

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Synchronizing Oil-

Injection Pump

CHECKING

1. With the ignition switch key in the OFF position,

move the throttle lever to the full-open position.

2. Check the alignment of the mark on the pump

housing and the mark on the control arm. If the

marks align, the oil-injection pump is

synchronized with the carburetors and no

adjustment is necessary. If the marks do not align,

adjust until alignment is attained.

727-185C

ADJUSTING

1. Loosen the jam nuts securing the cable/control rod

adjuster.

2. Move the throttle lever to the full-open position.

3. Rotate the jam nuts/control rod in the proper

direction until the marks align.

4. Lock the jam nuts to secure the adjustment.

Bleeding Oil-Injection

System

1. Fill the oil reservoir with recommended injection

oil.

2. Place an absorbent towel below the oil bleed

screw; then remove the bleed screw from the

pump. Allow the oil to flow through the oil-supply

hose until the hose is filled with oil and free of air

bubbles; then install the bleed screw.

NOTE: To aid in bleeding the oil system, blow

into the vent hose to force the oil toward the pump.
The oil reservoir cap must be on for this proce-
dure.

727-185C

3. Using a shielded safety stand, raise the rear of the

snowmobile. Engage the brake lever lock; then

start the engine and allow it to idle.

4. Using a stiff wire with a hooked end, pull the

control arm upward to the full-open position.

5. Idle the engine until oil flowing to the top of the

oil-delivery hoses is free of air bubbles.

6. When oil flows free of all air bubbles, shut the

engine off and check for leakage.

7. Release the brake lever lock.

! CAUTION

Whenever bleeding the oil-injection system, use
a 100:1 gas/oil mixture in the gas tank to ensure
adequate engine lubrication. Failure to use the
100:1 mixture during oil-injection system
bleeding will result in severe engine damage.

! WARNING

Keep hands and clothing away from all moving or
rotating parts.

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