Posted by rvirgil_KS on June 16, 2022 at 06:11:21 from (8.36.241.114):
In Reply to: ign. coil posted by roy prins on June 15, 2022 at 17:10:51:
That is a classic symptom on a tractor with resistor starting bypass. The M did not originally come with that feature, so unless it has been added some how that is likely not the problem. If a bypass system was added there should be an extra wire going to input of coil.
A couple of things I would check:
1. Is battery fully charged
2. Check the wire connections on 2 small posts on coil. Negative ground negative post to side of distributor, positive ground positive to side of distributor
3. Check the resistor (voltage reducer) in line to the coil. It should be about 1 1/2 ohms. I've seen several conversion kits with higher value resistor and it will cause your symptoms. If the resistor had too much resistance changing to a 3 ohm primary direct 12 volt no external resistor coil required could cure the problem.
4. Be sure battery cables and connections are clean and in good condition, especially where ground cable connects to frame. I like to attach them to the frame as close to the starter as I can.
5. You can bypass the resistor and see if that makes a difference in starting. Don't run it very long with bypass in place but that should confirm if the resistor is your problem.
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