Polaris Trail Boss 9921784 - Manual (Page 108)

105
TROUBLESHOOTING
Engine Doesn't Turn Over
Engine Turns Over, Fails to Start
Engine Backfires
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
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 fresh recommended fuel
Fouled or defective spark plug(s) Inspect plugs and replace if necessary
No spark to spark plug Inspect plugs, verify stop switch is on
Overuse of choke Inspect, clean and/or replace spark plugs
Clogged fuel filter Replace the filter
Water or fuel in crankcase Immediately see your Polaris dealer
Low battery voltage Recharge the battery to 12.8 VDC
Mechanical failure See your dealer
Possible Cause Solution
Weak spark from spark plug Inspect, clean and/or replace spark plugs
Incorrect spark plug gap or heat range Set gap to specs or replace plugs
Old or non-recommended fuel Replace with fresh recommended fuel
Incorrectly installed spark plug wires See your dealer
Incorrect ignition timing See your dealer
Mechanical failure See your dealer