Polaris UTV 2x4 Series 11 Owner's Manual page 79

MAINTENANCE AND LUBRICATION
Spark Arrestor
Use the following procedure to periodically purge accumulated carbon
from the exhaust pipe.
1. Remove the arrestor
clean-out plugs (1) located
on the bottom of the
muffler.
2. Place the transmission in
neutral and start the engine.
Purge accumulated carbon
from the system by momentarily revving the engine several times.
3. If some carbon is expelled, cover the exhaust outlet and rap on the
pipe around the clean-out plugs while revving the engine several
more times.
4. If particles are still suspected to be in the muffler, back the vehicle
onto an incline so the rear of the vehicle is one foot higher than the
front. Set the parking brake and block the wheels. Make sure the
vehicle is in neutral and repeat steps 2 and 3.
5. If particles are still suspected to be in the muffler, drive the vehicle
onto the incline so the front of the vehicle is one foot higher than
the rear. Set the parking brake and block the wheels. Make sure
the vehicle is in neutral and repeat steps 2 and 3.
NOTE: See WARNING above.
6. Repeat steps 2 through 5 until no more particles are expelled when
the engine is revved.
7. Stop the engine and allow the arrestor to cool.
8. Reinstall the arrestor plugs.
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