Polaris Sportsman Touring 850 2021 Owner's Manual page 117

SPARK ARRESTER
Failure to heed the following warnings while servicing the spark arrester could
result in serious injury or death. Never run the engine in an enclosed area.
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 go under the vehicle while it's inclined.The exhaust system can
get extremely hot. Do not perform service on the spark arrester while the
system is hot. Allow components to cool sufficiently before proceeding.
Use the following procedure to periodically purge accumulated carbon from the
exhaust pipe/muffler.
1. Remove the arrester cleanout plug from the bottom of the muffler.
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(s). 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. Repeat steps 4 to 6 until no more particles are expelled.
9. Stop the engine. Allow the arrester to cool.
10. Reinstall the arrester plug and remove the exhaust outlet cover or plug.
WARNING
MAINTENANCE
115