Simpson
How frustrating for you. Could you provide a little more info plse.
Before you could jump it with a screwdriver and it would start and run. Does it still work that way now?
When you turn the key on does anything light up or change?
Is power still getting to the switch or is there no voltage at all?
When you were changing the switch, was the battery disconnected or could you have blown the fusible link?
I cannot recall if I provided a photo of what I think a fusible link would look like on your tractor so I will post it here just in case you have not seen it.
If everything is dead and yet the battery is good and all the positive and negative battery connections are clean and solid, then the fusible link is the big suspect. In case you dont know, a fusible link is just a smaller diameter piece of wire with a special insulation over it. It is like the slow blow fuses on new tractors. It is durable way to protect the tractor wiring. When the link blows the insulation may look a little mushy or overheated. Dont replace it with an ordinary piece of wire. It is in series with the main power wire to the tractor so checking it means checking for 12 volts on either side of the link. There should be 12 volts to ground on either side if it is good and only one one side if it is blown.
Dave M7040