User Manual - Page 170

For SPORTSMAN 450 H.O.. Also, The document are for others Polaris models: SPORTSMAN 570, SPORTSMAN 570 EPS, SPORTSMAN 570 EFI, SPORTSMAN 570 SP, SPORTSMAN 570 HD, SPORTSMAN 570 UTILITY EDITION, SPORTSMAN 570 SP HUNTER EDITION, SPORTSMAN 450 HO, SPORTSMAN 450 HO EPS, SPORTSMAN 450 HD, SPORTSMAN 450 UTILITY EDITION, SPORTSMAN TOURING 570, SPORTSMAN TOURING 570 EPS, SPORTSMAN TOURING 570 SP, SPORTSMAN X2 570 EPS, UTE 570 HD, SPORTSMAN 6X6 570

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ENGINE DOESN'T TURN OVER
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
Loose electronic control box
connections
Inspect, clean, reinstall connectors
ENGINE TURNS OVER, FAILS TO START
POSSIBLE CAUSE SOLUTION
Out of fuel Refuel
Water is present in fuel Drain the fuel system and refuel
Old or non-
recommended fuel
Replace with fresh recommended fuel
Fouled or defective
spark plug
Inspect plug and replace if necessary
No spark to spark plug Inspect plug and replace if necessary
Water or fuel in
crankcase
Your authorized dealer can assist
Low battery voltage Recharge the battery to 12.8 VDC
Mechanical failure Your authorized dealer can assist
ENGINE BACKFIRES
POSSIBLE CAUSE SOLUTION
Weak spark from spark
plug
Inspect, clean and/or replace spark plug
Incorrect spark plug gap
or heat range
Set gap to specs or replace plug
Old or non-
recommended fuel
Replace with fresh recommended fuel
Incorrectly installed
spark plug wires
Your authorized dealer can assist
168
TROUBLESHOOTING
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