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When I turn my john deere sabre off at the key the engine shuts down, however ten seconds later the fuse blows. Also brand new safety switches are killing engine when released. Suggestions?

Ignition switch, safety switches, battery, solenoid and magneto are all new. But diode on magneto is original wire and mower has all new wiring.

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  • 188 Answers

Somewhere, probably in the ignition switch circuit there is a short circuit - otherwise the fuse would not blow. You'll need to take a test meter to each circuit in turn to isolate the circuit and then find the short. Be logical and patient!

Posted on May 07, 2015

Testimonial: "Thank you! While searching my wires found that diode was bad after all! However safety switches although new and new wiring still do not work properly. And now engine becomes extremely loud after about an hour of running! Thinking of getting new motor! UGH!"

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Posted on Jan 02, 2017

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  • 640 Answers

SOURCE: engine shuts down when engaging mower on my L120

Most likely the seat safety switch is malfunctioning.

Posted on Aug 06, 2011

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SOURCE: have a john deere sabre

Some mowers have a mowing reverse safety switch. That safety will kill the mower if you try to reverse with the deck engaged. Some mowers even have an override button that has to be held while backing up. As for the battery thing, no matter how much you charge a bad battery you will not get it to start a mower if it has a bad cell or two. I would use a multimeter to check battery voltage, but the end result would still be the same, replace the battery.

I hope this gets you going again.

Posted on Aug 07, 2011

  • 1 Answer

SOURCE: john sabre ride on mower

I have had similiar problem with the Sabre machine. On mine if the parking brake is set, and seat safety is closed and you pull down the blade engagement slightly further then the disengaged position the key will work. The only problem i continuously have even after replacing the battery is the low amperage cranking on ccold start...once warmed up starts no problem without the boost. I wonder if these machines typically have either a resistor built into the key switch which limits too much cranking power or if its something to do with the crank being sealed so tight as i also find it cranks over alot easier with the oil cap loosened up...just dont forget to tighten after starting!

Posted on May 30, 2012

  • 3698 Answers

SOURCE: why does a does a 14 hp briggs stratton rider mower engine keep blowing fuses

You still have a short or grounded wire.

Posted on Jun 04, 2014

pilipinas61547
  • 5 Answers

SOURCE: Why does my John Deere F735 Yanmar Diesel mower die when the key is released?

Your key switch is defective; replace it

Posted on Sep 22, 2014

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<ohpedro@hotmail.com>

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Have a john deere sabre turn key won't start thought battery was dead charged battery still won't start jump start with car battery it will start then . try to engage reverse with blades running it...


Some mowers have a mowing reverse safety switch. That safety will kill the mower if you try to reverse with the deck engaged. Some mowers even have an override button that has to be held while backing up. As for the battery thing, no matter how much you charge a bad battery you will not get it to start a mower if it has a bad cell or two. I would use a multimeter to check battery voltage, but the end result would still be the same, replace the battery.

I hope this gets you going again.

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