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

Engine Backfires

Possible Causes Solution
Weak spark from spark plug Inspect, clean, and / or replace spark plug.
Incorrect spark plug gap or heat range Set gap to specification or replace spark plug.
Old or non-recommended fuel Drain the fuel system and refuel.
Incorrectly installed spark plug wires Take the generator to an authorized Polaris servicing dealer or refer to the service manual.
Incorrect ignition timing Take the generator to an authorized Polaris servicing dealer or refer to the service manual.
Mechanical failure Take the generator to an authorized Polaris servicing dealer or refer to the service manual.
Loose ignition connections Check all connections and tighten.
Water present in fuel Drain the fuel system and refuel.