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Troubleshooting, Engine doesn’t turn over, Engine turns over, fails to start – Polaris Trail Boss 330 User Manual

Page 105: Engine pings or knocks

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TROUBLESHOOTING

Engine Doesn’t Turn Over

Possible Cause

Solution

Low battery voltage

Recharge battery to 12.8 VDC or higher

Loose battery connections

Check all connections and tighten

Loose solenoid connections

Check all connections and tighten

Engine Turns Over, Fails to Start

Possible Cause

Solution

Out of fuel

Turn fuel valve to reserve, refuel

Clogged fuel valve or filter

Inspect and clean or replace

Water is present in fuel

Drain the fuel system and refuel

Fuel valve is turned off

Turn the fuel valve on

Old or non-recommended fuel

Replace with new fuel

Fouled or defective spark plug(s)

Inspect plug(s), replace if necessary

No spark to spark plug

Inspect plug(s), verify stop switch is on

Crankcase filled with water or fuel

Immediately see your Polaris dealer

Overuse of choke

Inspect, clean and/or replace spark plugs

Clogged fuel filter

Replace the filter

Low battery voltage

Recharge battery to 12.8 VDC or higher

Mechanical failure

See your Polaris dealer

Engine Pings or Knocks

Possible Cause

Solution

Poor quality or low octane fuel

Replace with recommended fuel

Incorrect ignition timing

See your Polaris dealer

Incorrect spark plug gap or heat range

Set gap to specs or replace plugs

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