Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Hi, my name is***** will be assisting you.
Have you tried running the machine without the seat switch jumper? Some of the switches are normally open and some are normally closed so if you jumper the seat safety wiring it actually sends signal to the rest of the system just like if you were out of the seat. It sounds like a seat safety switch problem for sure.
Did you try to run it without the jumper in the seat switch wiring? With the wire unplugged from the switch.
Does the engine die as soon as you try to engage the PTO? Do you have the brake switch hooked back up now?
Has any of the switches been replaced that you are aware of?
How many wires go into you seat safety switch?
Your seat safety switch is a normally closed switch, when you sit in the seat it opens the circuit to tell the rest of the system that you are in the seat. This being the case we can't put a jumper in the wiring, it will act just like if you were not in the seat.
If the system doesn't recognize that you are in the seat then one of two things will happen. When you release the brake lever the engine will die and or when you engage the PTO the engine will die. They(OSHA) don't want this machine to be able to move or the blades run with no one in the seat, it is all to do with safety.
Try this with everything hooked up. Can you engage the PTO and the machine continue to run with the brake lever still locked?
Let's unhook the seat switch and see what happens.
It has to be a problem with the seat safety switch that is killing the engine. I am going to opt out of your question, maybe one of the other experts here will have some other suggestions for you.