The plugs are correct ones,i've had carb off and cleaned completely,i have no book that gives me the timing specs. so i can't check the timing.the gov. is opening the carb fully.I have not changed cap,rotor or wires.the tractor will sometimes run for an hour and not miss a beat, the next time it acts up in minutes.i replaced the fuel pump and filter this week, the pump only made 1.3lbs. pressure,the new pump is 3.2, still the same.
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