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MF1450 dies after running about 15 minutes


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#1 tjbindy OFFLINE  

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Posted September 11, 2015 - 08:05 AM

This is an old MF1450 that has been sitting for 25 or so years.  I have it running but have not used it for anything functional yet. 

 

Anyhow. . . .. starts up and runs GREAT.  Ammeter shows that it is charging.  After running for about 15 minutes there is an audible click sound, ammeter goes to zero and engine shuts off.  After sitting for 2 or 3 minutes, she will start right back up.  Each time I start it back up; it only runs 5 minutes or so before it shuts off again.

 

Is there some sort of thermal switch somewhere?


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#2 boyscout862 ONLINE  

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Posted September 11, 2015 - 08:42 AM

Not that I know of. Usually this situation is fuel not getting to the carb or an overheating ignition component. You need to diagnose the problem when it dies. A light that indecates spark will easily diagnose the spark problem. If it sparks good, clean the fuel tank cap and try running it. If it dies check the fuel flow at the carb. The fuel lines and filters suffer alot from the ethanol in the gas.

 

Step by step troubleshooting guides are in most of the engine manuals in our Manuals Section. Good Luck, Rick


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#3 limebuzz OFFLINE  

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Posted September 11, 2015 - 09:07 AM

Could be your breaker switch above the solinoid. I've had that happen once 


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#4 Auburn David OFFLINE  

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Posted September 11, 2015 - 10:40 AM

The click makes this one odd..sounds like something is grounding the kill switch..try removing the kill switch wire from the coil and see what she does.



#5 larrybl ONLINE  

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Posted September 11, 2015 - 11:10 AM

I second the "auto resetting circuit breaker".


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#6 Auburn David OFFLINE  

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Posted September 11, 2015 - 11:54 AM

I second the "auto resetting circuit breaker".

Not familiar with the workings of one of these tractors..so I will go with "auto resetting circuit breaker"as well...


Edited by Auburn David, September 11, 2015 - 06:41 PM.


#7 olcowhand ONLINE  

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Posted September 11, 2015 - 11:56 AM

Either the breaker is getting tired, or you have a short somewhere causing it to trip.


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#8 chieffan ONLINE  

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Posted September 11, 2015 - 12:59 PM

That click throw me off too.  I had a Wisconsin do that and fought it for a couple months.  Finally go it fixed.  It was the vent hole and cardboard gasket in the gas cap.  While running, gas would splash up on the cardboard and after a short time it would swell and close off the vent hole.  Made a larger hole in the cardboard (for lack of tech term) and never happened again.


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#9 propane1 ONLINE  

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Posted September 11, 2015 - 03:38 PM

I third the circuit breaker. And the gas cap is a good thought too.  I would check the ignition switch. The connection on B terminal over time starts to go bad causing troubles. Resistance and heat from that terminal maybe causing the breaker to click out.  Noel


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#10 tjbindy OFFLINE  

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Posted September 13, 2015 - 11:54 PM

I found a safety switch that had been bypassed.  It was shorted out with a piece of wire stuck in the connector.  It wasn't the seat safety switch or the PTO switch, but was located under the seat.  I redid the shorting wire in a more permanent manner. . . problem seems to be gone.


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