tasha, i"d go back over the tune up first, recheck everything. check breaker point gap just to be sure. recheck the plug wires for correct firing order. next re-check the ignition timing. the m is timed "static" ie engine off. set the timing indicator pointer at zero, top dead center, then use a test lite to set the distributor so the points just open. that should get you in the ball park. next set the carb. idle circuit is about 1 and one half turns open. for the main jet, start at about 3 and 1-2 turns open. start tractor and let it warm up, say 5 or 10 minutes. open throttle wide open, then adjust main jet out till tractor starts running rough, about 3-4 to one full turn, then go back in to where it settles down and smooths out. kind of a sweet spot. see if that takes care of the problem. if not, then pull the distributor cap, and gently turn the rotor and see if it snaps back. if it does, the advance springs are working. if it doesnt, the distributor timing is not advancing and that can be your problem. last, to check for a vacuum leak, with the tractor running, spray some carb cleaner around the carb gaskets, and also where the manifold bolts to the engine. do this outside, and have a garden hose handy if the carb cleaner ignites. if the engine changes sound when you are spraying, that is where your vacuum leak is.
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Today's Featured Article - Choosin, Mounting and Using a Bush Hog Type Mower - by Francis Robinson. Looking around at my new neighbors, most of whom are city raised and have recently acquired their first mini-farms of five to fifteen acres and also from reading questions ask at various discussion sites on the web it is frighteningly apparent that a great many guys (and a few gals) are learning by trial and error and mostly error how to use a very dangerous piece of farm equipment. It is also very apparent that these folks are getting a lot of very poor and often very dangerous advice fro
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