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Polaris Sportsman 500 HO Owner's Manual page 118

Polaris industries all-terrain vehicles owner's manual
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TROUBLESHOOTING
Engine Doesn't Turn Over
Possible Cause
Tripped circuit breaker
Low battery voltage
Loose battery connections
Loose solenoid connections
Engine Turns Over, Fails to Start
Possible Cause
Out of fuel
Clogged fuel valve or filter
Water is present in fuel
Old or non-recommended fuel
Fuel valve is turned off
Fouled or defective spark plug(s)
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
114
Solution
Reset the breaker
Recharge the battery to 12.8 VDC
Check all connections and tighten
Check all connections and tighten
Solution
Refuel
Inspect and clean or replace
Drain the fuel system and refuel
Replace with fresh recommended fuel
Turn the fuel valve on
Inspect plugs and replace if necessary
Inspect plugs, verify stop switch is on
Immediately see your Polaris dealer
Inspect, clean and/or replace spark plugs
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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