but if that checks out,(double check the shops coil/resistor combo for 12v on a front mount)
and it happens under heavy load,
lean, fuel flow problem
what do your plugs look like after some work?
check your tank vent, or cap vent for obstruction.
also, check carefully for a top hose coolant leak or overflow out a cracked overflow tube. a couple drops of coolant misted by the fan will turn a front mount into a backfire machine.
I second Hobo's water in the gas
chased ghosts on one tractor that ran very badly after awhile of working hard.
immediate check for spark and pulling the carb drain plug showed all ok.
"there's NOTHING wrong here...!"
back on, and it would run fine for awhile.
well, turns out, when I was checking the fuel flow out the drain,
I was draining the water out of the bowl.
Once it filled up with the right ratio of water again, it would stumble.
once I cleaned the water out of the tank and sediment bowl,
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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