John Deere MT restoration

[walleyery]

Good afternoon I am currently working on restoring my john deere MT that has been in my family forever and royally screwed up by hooking the battery on backwards its supposed to be positive ground I was not paying attention and hooked it up negative ground like all my converted tractors and then I tried to start it After noticing and swapping it back I now no longer have spark however the tractor will still turn over lights work how bad did I screw up i pulled the plug im not getting spark opened the cap dont see the points arcing. What would you test or replace first?

 

[GermantownGreen]

Good afternoon I am currently working on restoring my john deere MT that has been in my family forever and royally screwed up by hooking the battery on backwards its supposed to be positive ground I was not paying attention and hooked it up negative ground like all my converted tractors and then I tried to start it After noticing and swapping it back I now no longer have spark however the tractor will still turn over lights work how bad did I screw up i pulled the plug im not getting spark opened the cap dont see the points arcing. What would you test or replace first?

Points and condenser, coil too?
Not sure. Good luck.
Remember, no one is perfect in the tractor world.
We've all been there and bobo something in life!
GG

 

[Jim.ME]

Good afternoon I am currently working on restoring my john deere MT that has been in my family forever and royally screwed up by hooking the battery on backwards its supposed to be positive ground I was not paying attention and hooked it up negative ground like all my converted tractors and then I tried to start it After noticing and swapping it back I now no longer have spark however the tractor will still turn over lights work how bad did I screw up i pulled the plug im not getting spark opened the cap dont see the points arcing. What would you test or replace first?

I would say check everything. Those parts should work with either positive or negative ground, so I doubt just hooking the battery up backwards caused the problem. I suspect it is lack of power from the switch to the coil, maybe the points were dirty and about to fail anyway. Maybe the condenser was ready to go.

 

[Rich'sToys]

We had an MT when I was growing up. Seems if I recall correctly that there was an inline fuse somewhere in that system, that if it blew, the tractor would not run.

Sorry I can't be more specific. I was young, and never worked on it myself, but I remember Dad talking about it.

 

[ET]

Check for power to the coil. If there is power, file the points.