2015 Polaris 550 Indy Owners Manual - Page 105

TROUBLESHOOTING Engine Troubleshooting Problem Engine turns but fails to start Probable Cause Solution Faulty ignition • Install new spark plug(s). If engine still fails to start, check for spark. If there's no spark, SEE YOUR DEALER Make sure the fuel valve is on. Use the choke. Make sure tank contains fuel. Ice may be in fuel line, filter or pump. Add isopropyl alcohol to fuel system. On the standard POLARIS carburetor, the choke will not function with the throttle depressed. No fuel to engine Flooded engine (too much choke used) Poor engine compression Engine lacks power Fouled or defective spark plug(s) Fuel filter (loss of high RPM power) Plugged fuel filter or tank pick-up sock Incorrect clutching Carburetor and fuel pump Engine continually backfires Faulty plug(s) Carburetor / Fuel System Incorrect throttle freeplay or faulty switch Engine requires more than normal pulls to start Poor fuel Not enough fuel getting to engine • Hold throttle open, crank engine several times (may be necessary to change plug(s). • This indicates a major engine problem that must be repaired before operating. SEE YOUR DEALER. • Replace the plug(s). • SEE YOUR DEALER. • SEE YOUR DEALER. • SEE YOUR DEALER. • SEE YOUR DEALER. • Change plug(s). • Dirt or ice may be in the fuel system (add deicer to non-ethanol fuel at all times to prevent icing). • SEE YOUR DEALER. • Replace with fresh winter fuel. • SEE YOUR DEALER. 103