What is this?

[BroadmoorMan 0]

Hello. As I was taking out my engine on my 728 and I found a wire that goes from the front of the engine and goes all the way to the back under the seat. I assume this might be a ground but I'm not sure. Does anyone know what this is?

[Roy 0]

Looks like a safety engine kill switch beneath the seat. See if the wire is in series with the engine kill wire. If so the switch is probably closed (shorted) when when the seat is empty and open when you sit on the seat. e.g. The switch and wire ground the engine ignition out when the seat is empty.

[BroadmoorMan 0]

I looked again at the wire and realized it isn't even connected to the engine. It's just there. But there is 2 extra wires that are taped to it and one connects to the ingniton and the other goes to the cylinode? (not sure what it is) So if the wire doesn't even connect to the engine can I take it off?

I pulled out the wire as far as a I could so people could see. It was under the cylnder head.

[D-17_Dave 12]

Starter interlock safety switch. ie it won't crank if your not in neutral. I would never advise to disconnect or bypass the safety system on anything, but, if it's already gone then it won't hurt anything to completely remove it. The other alternative would be to replace the faulty switch and reconnect it.

[SimpleTom 4]

Tim, There are two safety interlock switches on the 728. I believe that wire went from the ignition switch to the front PTO safety switch then to the neutral (shifter) safety switch then to the solenoid. Check out both safety switches with the wires disconnected and use an OHM meter to check current through the switch. There should be current with the switches pushed in and none when released. If they both work I would reconnect the wiring to them. Tom