I certainly appreciated all your timely replies. I do appreciate your time. I must give more history on the problem. It is a 6 volt positive ground tractor. We have had for about 30 years. As mentioned before it was already converted to battery/coil when we got it. It has been sitting in the barn the last 5-6 years. We stuck a new battery in, cleaned the points and fueled up. First attempt to start The gas was running out the carb. Figured dirty needle valve or sunk float. Pulled carb and purchased rebuild kit and float. Set the main fuel screw 3 turns and the idle adjusting at 1-1/2 turns. When we got it running it was rich, even after warm up and a couple trips down the road. I have turned the main fuel in to 1-1/2 turns. It does not respond like I would think. The engine is tired but I think it would still be tunable. That is what got me thinking the ignition lead was retarded too much for complete combustion. I must confess I do not understand the impulse coupling yet. I see it as ignition retarder for easy starting. At idle speed I would think it would be 1 to 1 which would advance the timing. When I put the mag back together I did have #1 on TDC compression and made the #1 wire on the cap where ever the rotor was pointing. When I get back to the barn the carb is coming off and I will go through again. I will mark the pulley at 10,15,20,25,30,35 degrees and put a timing light on it. I have the following questions: Is the coil or condenser bad? Is the ignition lead correct at running speed? Could the new idle jet be too big? Fuel level too high in bowl?
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