Polaris MATRIX INDY VR1 Series Owner's Manual page 161

A new engine can cause temporary spark plug fouling due to the preservative
added during the assembly process. Avoid prolonged idle speeds, which cause
plug fouling and carbonization.
Refer to the Specifications chapter for the specific spark plug to be used in your
snowmobile.
Change the spark plugs at the intervals outlined in the Periodic Maintenance
section.
• Use recommended spark plugs with the proper gap. Refer to the
specifications section for the specific spark plug to be used in your
snowmobile.
• Use only resistor-type spark plugs.
• Torque spark plugs to specification.
• Always carry spare spark plugs.
SPARK PLUG INSPECTION
Spark plug condition is indicative of engine operation. The spark plug firing end
condition should be read after the engine has been warmed up and the vehicle
has been driven at higher speeds. Immediately check the spark plug for correct
color.
A hot exhaust system and engine can cause burns. Wear protective gloves
1. Remove the left side panel and hood.
2. Remove the spark plug cap.
3. Using the spark plug wrench provided in the tool kit, rotate the spark plug
counter-clockwise to remove it.
4. Reverse the procedure for spark plug installation. Torque to specification.
5. Reinstall the spark plug cap. Verify an "audible" click is heard when installing
the plug cap.
Spark Plug
18-22 ft-lbs (24-30 N·m)
when removing a spark plug for inspection.
TORQUE
WARNING
MAINTENANCE
159