2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 113Get this manual

2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 113

ENGINE TROUBLESHOOTING Spark Plug Fouling Spark plug cap loose or faulty Choke cable adjustment or plungercable sticking
Oil contaminated with fuel Restricted oil tank vent Engine Engine Turns Over But Fails to Start No fuel Dirt in fuel line
or filter Fuel will not pass through fuel valve Fuel pump inoperativerestricted Tank vent plugged Carb starter circuit Engine
flooded Low compression (high cylinder leakage) No spark (Spark plug fouled) Engine Does Not Turn Over Dead battery Starter
motor does not turn Engine seized, rusted, or mechanical failure Engine Runs But Will Not Idle Restricted carburetor pilot
system Carburetor misadjusted Choke not adjusted properly Low compression Crankcase breather restricted Engine Idles But
Will Not Rev Up Spark plug fouledweak spark Broken throttle cable Obstruction in air intake Air box removed (reinstall all
intake components) Incorrect or restricted carburetor jetting ETC switch limiting speed Reverse speed limiter limiting speed