Polaris 2016 Ranger 570 Full-Size - Manual (Page 90)

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TROUBLESHOOTING
Engine Doesn't Turn Over
Engine Turns Over, Fails to Start
Engine Backfires
Engine Pings or Knocks
Possible Cause Solution
Low battery voltage Recharge the battery to 12.8 VDC
Loose battery connections Check all connections and tighten
Loose solenoid connections Check all connections and tighten
Loose electronic control box connections Inspect, clean, reinstall connectors
Possible Cause Solution
Out of fuel Refuel
Clogged fuel filter Your POLARIS dealer can assist.
Water is present in fuel Drain the fuel system and refuel
Old or non-recommended fuel Replace with fresh recommended fuel
Fouled or defective spark plug Inspect plug and replace if necessary
No spark to spark plug Inspect plug and replace if necessary
Water or fuel in crankcase Your POLARIS dealer can assist.
Low battery voltage Recharge the battery to 12.8 VDC
Mechanical failure Your POLARIS dealer can assist.
Possible Cause Solution
Weak spark from spark plug Inspect, clean and/or replace spark plug
Incorrect spark plug gap or heat range Set gap to specs or replace plug
Old or non-recommended fuel Replace with fresh recommended fuel
Incorrectly installed spark plug wires Your POLARIS dealer can assist.
Incorrect ignition timing Your POLARIS dealer can assist.
Mechanical failure Your POLARIS dealer can assist.
Loose ignition connections Check all connections and tighten
Water present in fuel Replace with fresh recommended fuel
Possible Cause Solution
Poor quality or low octane fuel Replace with recommended fuel
Incorrect ignition timing Your POLARIS dealer can assist.
Incorrect spark plug gap or heat range Set gap to specs or replace plug