I have a 1997 Polaris xpress 300 that dies after it gets hot. It bogges down then die but will crank back up.I have changed the coil and the exciting coil and put new fuel lines on.

 

Check the compression before you throw any more parts at it. If it's low (100 psi or lower) probably when it gets hot the cylinder expands,rings lose a tight seal against the cylinder wall and will die. When 2 strokes cool back down they can crank again and run for awhile.May be time for a fresh top end. If compression is ok,then it's possible to have kinked tank or carb vent line that causes them to die down until it's able to get another "gulp" of air. Pull the fuel cap/check the carb vent for blockage and run awhile and see if that helps.Another is the fuel valve itself. Make sure you have good fuel flow to the carb. If none of this solves the problem,then it could still be an ignition breaking down(cdi/stator main coil) when it gets hot.

 

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