I would check the spark first. You need a FAT, BLUISH-WHITE SPARK, the color of lightning(Poor sparks need richer mixtures to ignite the fuel/air mixture). If you have a good spark. I would then check for air leaks around the carb metering section. the usual culprits are leaking thottle shaft seals, leaking carb to manifold gasket , cracked or rusted out intake manifoldor leaking block to manifold gasket. tjhis will cause a lean mixture. if you CAREFULLY spray starter fluid in these areas i mentioned with the engine running, it will speed up when you hit the leak.
If that isn"t the problem then you"ll most likely have to do abetter job cleaning the carb passages. The most import factor in a carb rebuil is to get all the passages "squeaky clean". Many times after a24 hour soak in carb cleaner you need to dig the crap and corruption out of the passges. A couple of squirts of carb cleaner won"t cut it.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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