[AT] Troubleshooting no start

[Greg Hass]

Someone correct me if I'm wrong, but couldn't you hook up a 12 volt battery 
to just the coil. I think you would have to match the polarity to the 
battery in it now. It wouldn't hurt the points to run for a short time and 
would tell you if a weak spark could be the problem. Also, and this is just 
a maybe, my experience has been that when a tractor won't start and the 
plugs are sooted I have to change to new ones to get it started. After I 
get it running good again and fix the original problem, I can usually put 
in the cleaned plugs and work the tractor to get it hot and the plugs will 
clean up and be fine.
Greg Hass