2005 Polaris WideTrak Snowmobiles Owners Manual - Page 138

Engine Troubleshooting Problem Engine turns but fails to start TROUBLESHOOTING Solution Probable Cause Faulty ignition Remove spark plug(s) and replace with new plug(s). If engine still fails to start, check for spark; if no spark SEE YOUR DEALER. Make sure the fuel valve is "ON". Check tank level and fill up with correct fuel. Ice in fuel line, filter, or pump. On the standard Polaris carburetor, the choke will not function with the throttle depressed. See second item under "Probable Cause" of "Engine continually backfires". No fuel to engine Flooded engine (normal situation caused by too much choking) Poor engine compression Hold throttle open, crank engine several times (may be necessary to change plug(s), however, the plug(s) may operate satisfactorily when dried). Running a mixture too lean (too small main jet will cause seizure resulting in loss of power). SEE YOUR DEALER. This indicates a major engine problem that must be repaired before engine is run. Change plug(s). Check fuel filter flow. Disconnect hose and drain about 1/2 cup. Fuel flow should be steady and encompass the entire diameter of fuel line. If not, replace filter. SEE YOUR DEALER. There's no adjustment to change power output. SEE YOUR DEALER. Change plug(s). Dirt or ice may be in fuel system. SEE YOUR DEALER. (Deicer/isopropyl should be added to non-ethanol fuel at all times for assurance against fuel line icing.) Engine lacks power Fouled or defective spark plug(s) Fuel filter (loss of high RPM power) Incorrect clutching Carburetor and fuel pump Engine continually ti ll backfires Faulty plug(s) Carburetor Engine requires more than normal pulls to start Poor gasoline or not Replace with fresh winter fuel. enough fuel getting to engine 135