Just realize, all gasoline the engine burns goes through the main jet on that carburetor. No other way for fuel to get to the idle circuit at low speeds or main nozzle at higher speeds. So, if you turn the main adjusting screw all the way in and it does not kill the engine that means the needle is not going into the main jet and closing it off. There are different length needles that came with power inprovement packages and the fire crater package had a different taper on the jet and needle so now days there are all sorts of combinations out there. Just turn main needle in with engine warmed up, full throttle until it starts to lean out and back it out about half turn for starting point. Also, many M's have a calibrated main jet just like later models so turning it out twenty turns will not increase fuel flow above what about 4 turns will.
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Today's Featured Article - Product Review: Kreem Brand Fuel Tank Liner - by Staff. This condition has occurred on a few machines that we have had and fortunately we were able to borrow the technique used at the local motorcycle shop. The product that we have used is called Kreem thouh there are others on the market, this one was recommended and available. This particular product is sold in three parts, a bottle of etch, dryer, and sealer. We were fortunate enough to start the process with stern warnings from those that had used this type of product before. The horror
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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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