I didn't forget ya...
However, I only have access to the parts diagrams/breakdown back to about 1930/40... The only schematic I have is for my own JD...{I hope never to put to use.../w3tcompact/icons/wink.gif }
If you have a DVM or simple ohmmeter, you can track it down very quickly.
Remember what you last did... the person was approaching the tractor... you shut off the PTO {switch}, you stopped moving your HST forward {switch}, you shut off the fuel/key ignition {switch}, you left your seat {switch}... one last thing you have are some ignition fuses.
The system is fairly simple. Put your ohmmeter across the switch contacts... look at the meter, keep looking at the meter and depress that switch... the meter reading will change to the opposite. If it was "shorted" or "0" ohms then it will go to "open" or "infinity" ohms... very basic.
You don't even have to know what the switch does... it either works or it doesn't.
Only time it will be confusing, will be on a multiple contact switch array... like pto {switch does other things}, then look closely at the side of the switch for symbols or markings.
Another way to test, while sitting in the seat, turn the key to start and at the same time, engage/disengage the pto multiple times... do the same thing with the foot control, bounce up and down on the seat... You may look a little crazy... but who cares if you find the problem and start the tractor... /w3tcompact/icons/smile.gif
I wish you the best, I've got confidence you'll find it's something simple. I'm sorry I couldn't get a wiring diagram/schematic to help more.
Good luck.
