Polaris Virage TX 2000 Service Manual

FUEL SYSTEM/CARBURETION
Mixture Screw Settings - Keihin
Idle Speed
On Genesis FFP models, the EMM is programmed to idle at 1100 RPM±50. The idle speed cannot be
adjusted on Genesis FFI models, therefore do not attempt to make any idle adjustments.
1. Connect a tachometer according to the
manufacturer's instructions.
2. With craft in the water or test tank, start engine
and let it idle.
3. Adjust idle speed to specifications by turning the
idle speed screw in (clockwise) to increase or out
(counterclockwise) to decrease idle speed.
4. Check throttle cable free play and oil pump
adjustment and adjust if necessary.
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Mixture Screw Adjustment - Base Setting - Keihin
The low speed (idle) mixture screw base settings are determined at the factory using a flow meter. Limiter caps
are then installed to allow only slight adjustment of the screws in each direction to compensate for changes in
altitude and temperature. The base settings should not be changed. If large adjustments are necessary for prop
er mixture, the carburetors, fuel system, and engine should be inspected to find the cause of a rich or lean condi
tion. (See Lean Condition Troubleshooting in Maintenance section.) If the carburetor has been tampered with
or disassembled before exact base settings were recorded, use the following procedure to adjust each screw.
Note:The base settings are for elevations between sea level and 3000 ft. (900 meters).
1. Remove limiter cap(s).
2. Turn mixture screw in until lightly seated, then
turn screw out the specified number of turns (see
specifications in beginning of this chapter).
3. Reinstall limiter cap(s) with tab positioned
mid-way between the stops to allow slight
adjustment in each direction.
4. Test the craft under actual operating conditions to
verify proper mixture.
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Polaris Virage TX 2000 Specifications

General

Brand	Polaris
Model	Virage TX 2000
Category	Boat
Language	English