2008 Polaris RMK Shift Owners Manual - Page 118

Engine Troubleshooting Problem Engine turns but fails to start Faulty ignition TROUBLESHOOTING Probable Cause Solution • 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. See page 56. • Make sure the fuel tank contains fuel. • Ice may be in the fuel line, filter or pump. Add isopropyl alcohol to the fuel system. • Mixture is too lean. A main jet that is too small will cause seizure resulting in loss of power. 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. • There is no adjustment to change power output. SEE YOUR DEALER. • Change plug(s). • Dirt or ice may be in the fuel system (deicer should be added to non-ethanol fuel at all times for assurance against fuel line icing). • SEE YOUR DEALER. No fuel to engine Poor engine compression Engine lacks power Fouled or defective spark plug(s) Fuel filter (loss of high RPM power) 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 Engine backfires but fails to start Poor fuel Not enough fuel getting to engine Spark plug wires may be on wrong cylinder • Replace with fresh winter fuel. • SEE YOUR DEALER. • Reinstall spark plug wires to the corresponding cylinder. 115