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MAINTENANCE
Carburetor
The number stamped in the end of the main jet indicates the jet size.
The jet installed at the time of manufacture is not necessarily correct
for your elevation. It’s your dealer’s responsibility to make sure the
correct main jet is installed.
CAUTION
Operating the snowmobile with incorrect jetting can result in serious
engine damage. Have your Polaris dealer perform all carburetor
adjustments to ensure all adjustments are done correctly.
Carburetor Adjustments
The frequency at which the carburetors are synchronized or balanced is
important. Properly adjusted carburetors can greatly improve engine
performance, fuel economy, engine life, and reliability.
If you notice any of the following conditions, the carburetor may need
adjustment:
S Hard starting
S Poor idle
S Overheated pistons and cylinder walls
S Plug fouling
S Poor engine response to various throttle valve openings
Carburetor Water/Sediment Trap
Drain the water/sediment traps located at the bottom of each carburetor
about every 1000 miles (1600 km). Inspect for contamination.
WARNING
When draining the traps, fuel spillage will occur. Always work in a well
ventilated area away from anything that may cause the fuel to ignite, such
as open flames, sparks, heaters, trouble lights, cigarettes, etc. Review
the fuel warnings on page 55.
1. Turn the fuel valve off.
2. Place a container or shop towels below the plug to catch drained
fuel.
3. Slide the clamp away from the drain plug and remove the drain
plug from the sediment tube.
4. Wipe residue from the plug and reinstall it. Reposition and tighten
the clamp.
5. Repeat the draining procedure for any remaining traps.