2015 Polaris Sportsman Touring 850 SP Owners Manual - Page 139
2015 Polaris Sportsman Touring 850 SP Manual
Page 139 highlights
TROUBLESHOOTING Engine Pings or Knocks Possible Cause Poor quality or low octane fuel Incorrect ignition timing Incorrect spark plug gap or heat range Solution Replace with recommended fuel See your dealer Set gap to specs or replace plugs Engine Runs Irregularly, Stalls or Misfires Possible Cause Fouled or defective spark plug(s) Worn or defective spark plug wires Incorrect spark plug gap or heat range Loose ignition connections Water present in fuel Low battery voltage Kinked or plugged fuel tank vent line Incorrect fuel Clogged air filter Reverse speed limiter malfunction Electronic throttle control malfunction Other mechanical failure Solution Inspect, clean and/or replace spark plugs See your dealer Set gap to specs or replace plugs Check all connections and tighten Replace with new fuel Recharge battery to 12.8 VDC Inspect and replace Replace with recommended fuel Inspect and clean or replace See your dealer See your dealer See your dealer Possible Lean Fuel Cause Low or contaminated fuel Kinked or plugged fuel tank vent line Low octane fuel Incorrect fuel Solution Add or change fuel, clean the fuel system Inspect and replace Replace with recommended fuel Replace with recommended fuel Possible Rich Fuel Cause Fuel is very high octane Stopping/starting without adequate warm-up Incorrect fuel Clogged air filter Solution Replace with lower octane fuel Allow engine to warm up before operating and/or stopping Replace with recommended fuel Inspect and clean or replace 137