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Ignition problem


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#1 reedtravis88 OFFLINE  

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Posted January 30, 2015 - 10:00 AM

Hello I have a Ariens riding lawn mower with a model number of 927025. It has the Briggs and Stratton 8HP motor with a model number of 191707-2510. I recently acquired this lawn mower and rebuilt the carb, new spark plug and new battery. After doing all of this it started right up and now runs. My only problem is the ignition will not shut the engine off. It starts the motor but when I turn the ignition back to off it continues to run. Any suggestions would be greatly appreciated!



#2 boyscout862 ONLINE  

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Posted January 30, 2015 - 10:23 AM

Welcome to GTT. It sounds like the switch is not connected or bad. That switch should ground the magneto ignition on the engine when it is in the OFF position. Check that there is a wire running from the switch to the engines ignition. The ignition will work when it is not grounded. I've had switches go bad where they don't ground anymore. Had to replace them. You can download the Briggs and Stratton Repairmans Manual in out Manuals Section. Good Luck, Rick


Edited by boyscout862, January 30, 2015 - 10:23 AM.

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#3 reedtravis88 OFFLINE  

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Posted January 30, 2015 - 10:46 AM

I know that the safety switch for the seat is not hooked up. Could that potentially break the circuit for the ground going to the ignition coil?



#4 jd.rasentrac ONLINE  

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Posted January 30, 2015 - 11:00 AM

welcome to GTT - I think it's the ignition switch...



#5 bhts OFFLINE  

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Posted January 30, 2015 - 12:40 PM

sounds like a bad key switch. But check all grounds and the wiring before getting one as they run around $50 for a new one.


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#6 reedtravis88 OFFLINE  

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Posted January 30, 2015 - 01:36 PM

Thanks for all the help, I am going to hopefully check the wiring tomorrow. 



#7 glgrumpy OFFLINE  

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Posted January 30, 2015 - 04:41 PM

Not sure on smaller BS engines, but the bigger ones had a wire come out of the points box, and one of the screws holding the box at top has a little tab held on by the screw. Another screw on that tab has the shut-down wire on it coming from engine, and longer wire up to the switch. You mentioned working on the points, just wondering if you have that and maybe bumped it off?  IF you don't have outside points box, then this info is Null!   Must be similar wire our of the engine tho to make sure is connected in some way to switch. Also your switch needs the M or Magneto tab on it to work, check back of it for correct switch and connection.


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#8 JDBrian OFFLINE  

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Posted January 31, 2015 - 09:02 AM

I've also seen those switches fail to make the off connection. Check the wiring first and then I'd say the switch is next on the list. 


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#9 shorty ONLINE  

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Posted January 31, 2015 - 11:38 AM

Welcome to the forums! 

 Sure sounds like a switch. I would hook up the seat switch again to make sure that it isn't sending out a fluky signal. And you won't have the worry of someone else  running it without it working.


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#10 dodge trucker ONLINE  

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Posted January 31, 2015 - 07:12 PM

you could always hide a toggle switch and hook up the engine kill seperately, anyone who doesn't know "that" machine won't be able to use it.


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