Sometimes taking the governor and throttle shaft apart and giving it a good cleaning will fix that. If worn parts are found they may need replaced. Probable causes, needle bearings in rockshaft dirty or bad. Weights or holes worn, slop in linkage pin holes, throttle shaft from governor housing to carburetor binding or worn parts. Some aftermarket piston kits and some IH ones changed the smoothness of engines. After they changed the connecting rods and piston pin size during 400 production it made the engines a little smoother. If comparing before and after serial # break tractors that could be why or just one tuned better than the other. Is the smother one a 56 model?
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
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