Polaris Sportsman 9920374 - Manual (Page 104)

101
MAINTENANCE
Spark Arrestor
Use the following procedure to periodically purge accumulated carbon
from the exhaust pipe/muffler.
1. Remove the arrestor clean-out
plug from the bottom of the
muffler.
NOTE: Be sure to clean out both
arrestors if your model has
two.
2. Place the transmission in
PARK.
3. Start the engine.
4. Quickly squeeze and release the throttle lever several times to purge
carbon from the system.
5. If carbon comes out of the exhaust, cover or plug the exhaust outlet.
Wear protective gloves.
6. Lightly tap on the exhaust pipe with a rubber mallet while repeating
step 4.
7. If particles are still suspected to be in the muffler, elevate the rear of
the vehicle one foot (30 cm) higher than the front. Block the wheels.
8. Place the transmission in PARK. Lock the parking brake. Repeat
steps 4 to 6 until no more particles are expelled.
9. Stop the engine. Allow the arrestor to cool.
10. Reinstall the arrestor plug and remove the exhaust outlet cover or
plug.
WARNING
Failure to heed the following warnings while servicing the spark arrestor
could result in serious injury or death.
The exhaust system can get extremely hot. Do not perform service on the
spark arrestor while the system is hot. Allow components to cool sufficiently
before proceeding.
Remove any combustible materials from the area. Wear eye protection and
leather work gloves. Do not stand behind or in front of the vehicle while
purging. Never run the engine in an enclosed area. Exhaust contains
poisonous carbon monoxide gas. Never go under the vehicle while it's
inclined.
Exhaust
Outlet
Clean-Out Plug