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Mike, has that tractor been parked near some herd of horses??? Anyway, what you refer to as galloping I take as constantly surging up and down in RPM I assume???? As your question suggests, it may well be the governor or carb or even something else, so I will throw out a few thigns you might want to try. If you disconnect the throttle linkage there at the carb, which isolates it completely from any governor malfunctioning, is it possible to hand control the RPM and it stay at a steady speed (variable as to amount of throttle opening) and not gallop as you open and close the throttle????? ????? If so and you can achieve steady RPM's across the band and the tractor doesnt cut out or start to die and idles down smoothly and slowly, then I suspect its more of a governor than a carb problem. If its a carb problem and she wants to die, the governor then opens up the throttle causing the surging up n down. With the governor linkage disconnected if she wont manually hold a nice smooth RPM and starts to cut out and die, especially at low RPM, (which causes the governor to open her up) then its a carb problem. With the linkage disconnected at top of the carb and the butterfly held wide open and the throttle set to max RPM, the throttle linkage on the single barrell DLTX early lettered like A,B, G etc carbs, should be adjusted about 1/2 hole short of just falling into where it fits into the throttle. How is yours adjusted now if its a DLTX single barrell on those tractors ????? ????? Before gettign into other carb problems, is this a DLTX single barrell carb on a lettered series tractor (A, B, G etc) OR a duplex carb on the numbered series, regardless, you might just need a carb adjustment. Have you tried tweaking and adjusting the idle and power top needle adjustments on top if its a single barrell carb or the bottom center of bowl power adjustment and idle settings for each side on a duplex carb??? Any of those misadjustments can cause a tractor to surge. On the single barrells carbs, the initial rough in settign is 2 turns out on the idle (one on flywheel side) and 1 out on the power (one on clutch pulley side) then adjust to fine tune. Try adjusitn those to see if the surging stops????? ???? Other carb causes of surging can be a choke butterfly plate that isnt operatign properly but loose to where its opening and closing causign surging. If its one of the types where the throttle rod actually operates a small spring on the butterfly shaft underneath, you might inspect it to see if the choke butterfly plate is operatign properly and not free to move indisctiminately. Does any amount of choking cause the rpm to smooth out and the surging to stop????? ???? If so, its a carb or fuel flow to the carb problem and probably not a governor problem. Especially on the single barrell carbs, if theres a restriction in the carbs idle circuit, the tractor will surge because at idle it starts to die causign the governor to open up where she runs fine on the power circuit, but then she slows down and cuts out on the idle circuit causign the process to repeat itself. You might also want to remove the air cleaners bottom oil reservoir to insure its not got water inside it. Other surging causes might even be ignition related or water in the fuel or gas flow inside or to the carb problems. Let us know what type of tractor and carb you have,,,,, ,,,,, try adjusting the load and idle needles,,,,, ,,,,, ,,, see if any amount of choking stops the surging,,,,, ,,,,, see if the choke buttterfly plate is operatign correctly and not free to flop around,,,,, ,,,,, ,,, see if theres a lot of black smoke when she surges up or down,,,,, ,,, see if the air cleaner is not restricted or has water in its bowl,,,,, ,,,, insure the gas is water free..... ... and post back that and any other info and maybe we can narrow down the cause of the galloping John Deere. God Bless the USA Ol John Nordhoff
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