You got your answer. Just unhook that wire at R terminal of starter solenoid to check. Like they said, that terminal should be an open circuit until starter solenoid engages and then it supplies battery voltage to coil bypassing the resistor for starting. Your next problem is this. If it did not have a resistor before you most likely have a 12 volt coil so running through the resistor will reduce the current flow through coil and provide a weak spark. Look the coil over good to see if it say, 12 volts, or 12 volts with external resistor. Any body with an ohmmeter can check primary winding of coil and tell you what you have. If 2 ohms or less it requires a external resistor. If about 3.5 to 4 ohms it is a true 12 volt coil and you do not want a resistor.
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Today's Featured Article - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
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