MF135 won't start

I was working on my tractor, took a break, came back 45 minutes later and tried to start the tractor with no success. I got nothing, no click, no whurrrr, nothing. I thought it was the battery so I tried to jump it to no avail. I had some one pull me and it started right up. I turned it back off and it wouldn't start again. I thought maybe a dead cell in the battery? Tested the battery and it was 100%. What is it???
 
Poor battery connection at one or both posts of the battery or a bad ground. Or if it has a solenoid that maybe bad. Or your starter button went out. If it has a solenoid use a heavy piece of wire and jump across the 2 big posts and see if it will spin over. BE 1000% sure it is out of gear. If it spins over then solenoid or switch is bad
 
POSSIBLY faulty SAFETY START SWITCH:

To test switch :

Disconnect wirers from switch......connect wires together.....try starting engine:

NOTE**** IF Engine starts, and TRANSMISSION is in gear,.....Tractor SHALL MOVE!
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Check your connections with a test light or volt meter.

Need to check under load, have an assistant hold the starter switch while you test. When you find the voltage drop, that's the problem.

Look for corroded or heat discolored connections.

Just be careful, it could start cranking any time!

Not sure on that model, but the Fergusons of that era used the back of the dash sheet metal for a ground, a common problem spot. Best to run a ground directly to the engine block.
 
Try a heavy wire from the non-ground side of the battery to the starter stud. If it turns over that way then you have a bad solenoid since you jumped around it. If it does not turn over then good chance you have a bad starter of bad connections
 
Ok a battery has 2 posts and 2 cables off of them. One will run down to the frame/body of the tractor and that one is the ground cable. The other will run to the solenoid or start button which ever it has. If 12 volts and has an alternator that is most likely to be the + one. Run a heavy wire like a battery cable from the + side down to the starter stud the part that ha a cable from the solenoid on it. Be 1000% sure it is out of gear when you do this. If the starter is good it should spin up the starter if it does not starter is bad or it is not grounding where it is bolted on
 
Thank you. I thought you were talking about the positive post but I wasn't sure and I don't want to do something potentially destructive. I am many things but a mechanic is not one of them!
 
Your welcome. I have been working on engines since I was 10 or so and just drove a tractor that has a lot of parts off of it but had to move it so I did what I had to do. I keep my e-mail open so if a person needs more info and maybe needs to talk it out I can call them or they can call me. Help many people that way and got a call the other day fro ma guy who needed a little help
 

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