Polaris RANGER XP 900 Owner's Manual page 103

Engine Runs Irregularly, Stalls or Misfires
Possible Cause
Fouled or defective spark plugs
Worn or defective spark plug wires
Incorrect spark plug gap or heat range
Loose ignition connections
Water present in fuel
Low battery voltage
Incorrect fuel
Clogged air filter
Clogged intake screen
Throttle release switch malfunction
Other mechanical failure
Engine Stops or Loses Power
Possible Cause
Out of fuel
Water is present in fuel
Fouled or defective spark plugs
Worn or defective spark plug wires
Incorrect spark plug gap or heat range
Loose ignition connections
Low battery voltage
Incorrect fuel
Clogged air filter
Clogged intake screen
Throttle release switch malfunction
Other mechanical failure
Overheated engine
TROUBLESHOOTING
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
Replace with recommended fuel
Inspect and clean or replace
Inspect and clean (with soapy water) or replace
See your dealer
See your dealer
Solution
Refuel
Replace with new fuel
Inspect, clean and/or replace spark plug
See your dealer
Set gap to specs or replace plug
Check all connections and tighten
Recharge the battery to 12.8 VDC
Replace with fresh recommended fuel
Inspect and clean or replace
Inspect and clean (with soapy water) or replace
See your dealer
See your dealer
Clean radiator screen and core, clean engine exterior,
see your dealer
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