Individual Fuel System Components - Arctic Cat 2014 SNO PRO 500 Operator's Manual

Removing Throttle Body
NOTE: The expansion chamber and air silencer
must be removed for this procedure.
1. Disconnect the wiring harness from each injector
and from the throttle position sensor connector.
2. Remove the coolant hoses from the throttle body
assembly and plug them to prevent leakage.
3. Remove the fuel supply hose from the fuel rail.
WARNING
Since the fuel supply hose may be under pressure, remove
it slowly to release the pressure. Place an absorbent
towel around the connection to absorb gasoline; then
remove the hose slowly to release the pressure. Always
wear safety glasses when removing the fuel hoses.
4. Loosen the flange clamps.
5. Slide the throttle body assembly out of the flanges;
then loosen the jam nut securing the throttle cable
and remove.
6. Remove the oil pump cable from the oil pump.
7. Remove the throttle body assembly.
Installing Throttle Body
1. Attach the throttle cable to the throttle body.
Secure with jam nut.
2. Place the throttle body assembly into position.
Make sure the flanges and boots are positioned
properly. Secure with flange clamps.
3. Connect the oil pump cable to the oil pump and
secure with the jam nuts.
NOTE: The coolant hoses must be connected
first; then the throttle body assembly must be
installed.
4. Secure the coolant hoses to throttle body assem-
bly.
5. Connect the fuel supply hose to the fuel rail.
CAUTION
These hoses must be connected to the correct fittings.
6. Connect the wiring harness to each injector and
throttle position sensor.
NOTE: Install the air silencer and the expansion
chamber.
7. Place the rear of the snowmobile on a shielded
safety stand and start the engine without touching
the throttle. It may idle slowly and stop. Restart
using the same procedure until the engine starts
and builds RPM on its own.
CAUTION
When installing the throttle bodies, make sure the
gasline hose is properly routed to avoid premature
wear and/or contact with exhaust components.
8. Check the cooling system.
9. Adjust the throttle cable and oil pump cable/syn-
chronization as necessary.
INDIVIDUAL FUEL SYSTEM
COMPONENTS
Removing Throttle Body Flange
NOTE: The expansion chamber and air-intake
silencer must be removed for this procedure.
1. Loosen the clamps securing the throttle body
assembly to the throttle body flanges.
2. Remove the throttle body assembly from the
flanges.
3. In turn on each flange, remove the two nuts, lock
washers, and flat washers securing the intake
flange to the cylinder; then remove the flange.
Installing Throttle Body Flange
1. Apply a thin coat of high-temperature silicone to
the cylinder side of each flange; then attach each
flange to a cylinder and secure each with two flat
washers, lock washers, and nuts. Tighten to 96 in.-
lb.
2. Install the flange clamps on the flanges; then place
the throttle body assembly into the flanges and
secure with the clamps.
729-325A
57