4020 LP died won't start

[Garri]

I am working on an early JD 4020 LP. Just before this problem, tractor received new 12v battery, spark plugs, wires, distributor cap and alternator. It has an electronic ignition so I didn't install the points & condenser. I also cleaned the oil bath air filter and put in new Mystik 30 weight oil. The tractor ran a while and then didn't want to start. After check numerous things, I had the idea that the oil in the air breather was too thick. I took the pan off and it started right up. I then put in new non detergent 10 weight and all was good for a few hours. Then, it died and that was it. It won't turn over, won't click won't do anything. Battery is hot, starter is getting current, ignition switch and starter button is hot, lights work, propane cutoff clicks but again, will not even engage or click the starter. I disconnected the main harnesses leading to the ignition, starter and light switches and cleaned them. Reassembled them and nothing. I will remove the starter tomorrow and check it independently. I don't think a bad starter would just make a tractor die would it? Any advice will be greatly appreciated.

 

[rick deere]

Can you short starter across,ck to see if engine is locked up,ck after you get it to turn over if you have fuil dont trust gauge to be correct,ck fo bad ground keep looking till you find problem.

 

[Tx Jim]

Is trans in neutral and did you check continuity across neutral start switch?

 

[David G]

Neutral switch?

Should be on left side, 2 yellow wires I think.

 

[Garri]

I forgot to add that it does have a new neutral
safety switch installed. Everything is good there. I
found out today that the starter is dead. Will not
spin or engage on the tractor even when shorting it
across. I took it off and hooked up a set of jumper
cables and still nothing. Just a tiny spark when
touching the starter post. It still has me puzzled
of why did it just die? Is it possible that the
starter solenoid could have shorted out or
something? I'm grasping at straws now.

 

[rick deere]

while starting tractor and nothing happens still could be conection of safty switch ever now and than my power shift does that and I wiggle the safty switch by the inching peddle and it starts