L4600 safety switch problem

[airlenny1]

Kubota starts but quits when activate HST pedal forward or reverse. Seat safety switch does not work either. It seems that the HST pedal-neutral switch is functioning like it is supposed to when the engine is off. Cannot locate the HST pedal neutral switch to test it. I cannot find a sensor or switch anywhere near the pedal. The linkage goes directly into transmission. Any help with drawings or info on the location of the switch?

Thanks,
airlenny1

 

[Dave_eng]

I believe your tractor's start and run features are controlled by an OPC (Operator Presence Controller).

I cannot find a WSM for your tractor.

If the seat switch is not working, the OPC will sense the movement of the HST pedal, believe no one is on the seat and shut the engine down.

Rather than focusing on the HST switch, I suggest your attention be on getting the seat switch working properly.

Dave

 

[old and tired]

Yes, focus on the seat switch. The HST pedal safety switch will not start the engine unless it's in neutral. Once the engine is started, the OPC (seat) takes over to kill the engine if no one is in the seat.