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Magnetos, Ignition Coils and Spark Plugs Discussion about magnetos, buzz coils, spark plugs, ignitors and low tension coils.

Magnetos, Ignition Coils and Spark Plugs

Mag went bad on my Briggs


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  #1  
Old 09-06-2017, 07:10:16 AM
AugerCreek AugerCreek is offline
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Default Mag went bad on my Briggs

The mag went on my 14hp Briggs so I'm wondering if I can use just the points to operate a automotive coil to develop the spark for ignition? What else needs to be done? Resistor added or not?
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Old 09-06-2017, 09:19:04 AM
Andrew Mackey Andrew Mackey is offline
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Default Re: Mag went bad on my Briggs

Firdt, you need to find out if the points are normally open or closed. If closed, a battery and coil will not work -l burn out.

If you use an automotive coil, you probably should use a resister, to save wear on the points. t
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Old 09-06-2017, 11:32:23 AM
AugerCreek AugerCreek is offline
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Default Re: Mag went bad on my Briggs

The points are normally open. Thanks for your answer!
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Old 09-11-2017, 02:26:11 PM
AugerCreek AugerCreek is offline
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Default Re: Mag went bad on my Briggs

Good info, did just as you suggested and it runs better than it has for a long time. Now to put a alternator on it. Does it make any difference on rotation?
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Old 09-12-2017, 02:46:53 PM
Ed Radtke Ed Radtke is offline
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Default Re: Mag went bad on my Briggs

The alternators cooling fan matters and the brush holders may be offset slightly,so in closing I would say yes.
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Old 09-12-2017, 03:32:30 PM
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Motormowers Motormowers is offline
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Default Re: Mag went bad on my Briggs

Quote:
Originally Posted by AugerCreek View Post
Good info, did just as you suggested and it runs better than it has for a long time. Now to put a alternator on it. Does it make any difference on rotation?
I would go with a small Nippondenso internally regulated one like whats used on small diesel compact tractors like Kubota or Cub Cadet. They work great and last a long time. I put one on my 180D Benz to replace the generator and couldnt be happier.
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Hey I'll get right back to you on that
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Old 09-13-2017, 07:05:58 AM
AugerCreek AugerCreek is offline
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Default Re: Mag went bad on my Briggs

Thanks much guys
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Old 09-13-2017, 07:45:41 AM
I like oldstuff I like oldstuff is offline
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Default Re: Mag went bad on my Briggs

Rotation direction on an alternator makes no difference. But the fan does work better when spun in the normal direction. Just run it and look for heat buildup. You should be fine.
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Old 09-14-2017, 06:15:12 AM
AugerCreek AugerCreek is offline
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Default Re: Mag went bad on my Briggs

I see on e-bay a alternator for a John Deere lawn tractor that appears to not have a fan also has two or three wire connection, how would I determine which wires go where?
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