Polaris RANGER 400 Owner's Manual page 91

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