MY MT180 wont start

[CooHead]

...adn the wires are all good contact and good connection?
No corrosion?

Maybe try to by-pass the starter seloid.

CAREFULLY short across the two terminals there. Where one wire (+) comes from battery and other post across it.
Use a screw driver and only hold the insulated handle of it. Dont let the steel shaft touch anything but the two posts. Lean on one post and slowly angle it down to the other.

There will be a violent spark and arch and maybe it will turn over. It will be scary. You will jump back. But try it again. That would show it might be the seloid or the key switch.

 

[Maxify55]

...adn the wires are all good contact and good connection?
No corrosion?

Maybe try to by-pass the starter seloid.

CAREFULLY short across the two terminals there. Where one wire (+) comes from battery and other post across it.
Use a screw driver and only hold the insulated handle of it. Dont let the steel shaft touch anything but the two posts. Lean on one post and slowly angle it down to the other.

There will be a violent spark and arch and maybe it will turn over. It will be scary. You will jump back. But try it again. That would show it might be the seloid or the key switch.

I had an old '79 Yanmar that I had to start in just that manner, for months.
Till I just got tired of playing with it and actually looked for the ground fault.

It turned out to be a bad main ground 6" from the neg. terminal of the battery.

6"??....Yaaagh, I spent all that time messing with that tractor for 6".
Laughing at myself for it now, though.

Enjoy your search!