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john deere 314 pto issues/tractor dies after 30 seconds with deck engaged.

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#1 custom8mm98 OFFLINE  



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Posted August 01, 2010 - 05:10 PM

my father has a jd 314 runs great, when you go to use the deck you flip the switch, the deck will engage for roughly 30 seconds and then the tractor dies. shut the pto off, starts right back up. turn the pto on again, will go another 20-30 seconds and die again. does anyone know what may be causing this issue or anyone had this issue before. i thought it was the wiring, as the wires going from the pto switch to the key switch would get hot, so i replaced all of them with heavier gauge wire. only thing i can think it maybe is that there is too much resistance somewhere between the pto and the switches. any ideas?



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Posted August 01, 2010 - 08:09 PM

Could be too much load on the engine, something dragging in the deck idler pulley or spindle bearings n/g.
Or maybe your engine is running a little lean dirty carb? Also maybe bad spark plug???

#3 olcowhand ONLINE  


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Posted August 01, 2010 - 08:27 PM

Kind of sounds like the electromagnet in the pto clutch is pulling way too much current, as in it may be "fried". Most pto clutches only draw about 4 to 6 amps. Try putting a 10 amp fuse going inline to the pto. If it blows it, then the clutch is likely going bad. As a shorting pto heats up, arcing in the coils, it starts pulling more & more juice, drawing it away from the ignition coil.