Tractor won’t shut off

[thooper]

I have a 100 and it still runs after the key is turned off. Everything is wired correctly. I think it may be a grounding problem.

 

[digger]

I have a 100 and it still runs after the key is turned off. Everything is wired correctly. I think it may be a grounding problem.

Make sure on the wiring.

 

[gary noblit]

Tom, your coil wire comes directly from switch.If switch is working it can't run unless you have a shorted wire somehow feeding coil wire..

 

[HKCooper44]

Put a new ignition switch in. Most are 60 years old and worn out internally. Remove the battery so you can get to it. Meantime, you can add full choke to stop the engine.

 

[lpalma]

Can you throttle up after you turn off the key? If not is it maybe a starter or regulator malfunction

 

[thooper]

Ended up being a new regulator being bad.

 

[gary noblit]

Tom,glad you found it and brought it to our attention as well.

 

[gloughery]

Tom, please let us know how you isolated the problem so I can learn from what you did. Not sure I understand how that worked and it will help me tremendously. I often fix things but don't know what I did! Thanks.