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Old July 13th 07, 11:33 PM posted to alt.home.repair
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Default lawn mower magneto

how do i set the magneto spark gap on a 4hp push mower, is ther a sertain
gap or do i just push it up to the magneto magnet

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Old July 13th 07, 11:47 PM posted to alt.home.repair
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Default lawn mower magneto

On Fri, 13 Jul 2007 17:33:26 -0500, "raindeeer"
wrote:

how do i set the magneto spark gap on a 4hp push mower, is ther a sertain
gap or do i just push it up to the magneto magnet


Some folks say to use a match book cover... about 0.25.

I don't know the real answer, but you do need a gap and this gap will
affect performance.

--
Oren

...through the use of electrical or duct tape, achieve the configuration in the photo..
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Old July 14th 07, 12:06 AM posted to alt.home.repair
Al Al is offline
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Default lawn mower magneto

A match book or bussiness card is just about right
"Oren" wrote in message
...
On Fri, 13 Jul 2007 17:33:26 -0500, "raindeeer"
wrote:

how do i set the magneto spark gap on a 4hp push mower, is ther a sertain
gap or do i just push it up to the magneto magnet


Some folks say to use a match book cover... about 0.25.

I don't know the real answer, but you do need a gap and this gap will
affect performance.

--
Oren

..through the use of electrical or duct tape, achieve the configuration in
the photo..



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Old July 14th 07, 12:20 AM posted to alt.home.repair
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Default lawn mower magneto

On Fri, 13 Jul 2007 15:47:27 -0700, Oren wrote:

On Fri, 13 Jul 2007 17:33:26 -0500, "raindeeer"
wrote:

how do i set the magneto spark gap on a 4hp push mower, is ther a sertain
gap or do i just push it up to the magneto magnet


Some folks say to use a match book cover... about 0.25.

I don't know the real answer, but you do need a gap and this gap will
affect performance.


BTW, while you can; lightly sand the magnets in the flywheel and also
the magneto contacts. Just shine them up a bit. Nothing serious...



--
Oren

...through the use of electrical or duct tape, achieve the configuration in the photo..
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Old July 14th 07, 02:47 AM posted to alt.home.repair
mm mm is offline
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Default lawn mower magneto

On Fri, 13 Jul 2007 17:33:26 -0500, "raindeeer"
wrote:

how do i set the magneto spark gap on a 4hp push mower, is ther a sertain
gap or do i just push it up to the magneto magnet


You don't want the parts to scrape.

What oren said.

But it's not a spark gap. There's a gap or space, and it's at the
magneto, and it is part of causing the spark, but the spark gap is at
the spark plug.


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Old July 14th 07, 04:26 AM posted to alt.home.repair
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Default lawn mower magneto

On Jul 13, 3:33 pm, "raindeeer"
wrote:
how do i set the magneto spark gap on a 4hp push mower, is ther a sertain
gap or do i just push it up to the magneto magnet


I agree with Al. I worked in a small engine shop many years ago and
one of the old timers had us use a business card to set the
clearance. It was pretty close to the correct gap and a lot easier to
use then a feeler gauge.



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