Content Source: 2020 Indian Chief, Chieftain, Springfield and Roadmaster Rider’s Manual (9930566 R03) > Maintenance Chapter

IMPORTANT

The Owner's Manual for this vehicle contains warnings, instructions and other information you must read and fully understand before safely riding or performing maintenance on this vehicle.Always follow the warnings and instructions in Owner's Manual.

Click the CONTENTS link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris.com

Spark Plugs

Inspect spark plugs after the break-in period and every 15,000 miles (24,000 km) thereafter. Replace spark plugs every 30,000 miles (48,000 km). Always replace spark plugs in pairs.
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Spark Plug Specifications
Spark Plug Type NGK DCPR8E
Spark Plug Gap .034 inch (.9 mm)
Spark Plug Torque 12 ft-lbs (16.3 Nm)
  1. Make sure the engine has cooled to room temperature.
  2. Turn the power switch off.
  3. Pull upward on the spark plug boots (not the wires) to remove the boots.
  4. To prevent debris from entering the spark plug holes, use compressed air to clean the area around the plugs before removing them.

    Tool: 12 mm plug socket

    caution
    Wear eye and face protection when using pressurized air.
  5. Reinstall the spark plugs or install new plugs.
    TORQUE
    Spark Plug: 12 ft-lbs (16.3 Nm)
  6. Reinstall the spark plug boots.

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