4300 HST Nuetral Switch

Semi75 · Apr 7, 2009

I can't for the life of me seem to locate the neutral switch near the foot pedals to test reference a starting problem. I already pulled a bonehead maneuver and pulled of the cruise control magnet switch which is working fine thinking it was the problem.

Basically to get the tractor started I need to be sitting in the seat and push the forward hyrdo pedal once or thrice before it will attempt to crank. While running with pto disengaged and in park etc it now shuts off from the seat switch. It must still think it's in gear. The obvious thing to check would be the neutral switch but I can't find it lol. The sad part is the online parts catalog shows a picture of it by itself but I'm missing it on the tractor. Anyone have a pic of where it is located?

Thanks for the help.

joecdeere · Apr 7, 2009

I don't have a picture, but if you lay on your back and look up through the cast hole in the bottom of the transmission housing, you will see it bolted to one of the plates. It's held on with two very small nut & bolts. Should be the only switch you see in the pedal linkage.
It looks just like the picture, not much bigger than a box of matches with a single plunger on the side. Hope this helps a little.

Semi75 · Apr 8, 2009

Thanks for the description Joe, I found it. That thing is a pain to get off, holy smokes. I ended it just leaving it on after testing it and then bypassing the switch until the local JD dealer can have get the part in Friday. I'm not looking forward to replacing it.

joecdeere · Apr 8, 2009

It is a pain!!

dccircles · Mar 1, 2010

is there a way to temporarily bypass the neutral switch on a 4300 HST John Deere?

dfkrug · Mar 1, 2010

dccircles said:
is there a way to temporarily bypass the neutral switch on a 4300 HST John Deere?

Follow the wires to the connector, thenn put a jumper across them. I
soldered mine together.

arrabil · Mar 1, 2010

NSS? These things have an NSS? Huh. What does it prevent from happening on these models?

beenthere · Mar 2, 2010

I have the 4300 HST, and don't recall missing any functions as a result of a neutral safety switch. But I do see it in the service manual "Transmission Neutral Shift Switch".

dccircles Welcome to the forum.
What is the need for bypassing the switch? It escapes me.

jd110 · Mar 2, 2010

The neutral start switch prevents the engine from starting if the pto is engaged, or transmission is not in neutral. (hydro pedal not centered on hydro)If you have a no start situation, you can bypass the switch to test if it is defective. Or the safest way to test it is to connect an ohmmeter to the switch.