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Old 07-01-2007, 10:22 PM   #1
3D-Seth
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Default Spark plug gap for standard NGK in DA-100?

Anyone know the standard spark plug gap for the DA-100 standard NGK spark plug? I figure around .25-.30 but was wanting to know for sure? Anyone?

Thanks....................

Seth
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Old 07-01-2007, 10:29 PM   #2
dmcquinn
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Default Re: Spark plug gap for standard NGK in DA-100?

.015 - .020 per Dave Johnson (DA)
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Old 07-01-2007, 10:38 PM   #3
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Default Re: Spark plug gap for standard NGK in DA-100?

I have 2 DA-100 manuals. 1 sez .015"-.020" and the other says .018"-.020".

The best answer I've heard is that a #11 exacto blade is exactly the right size.
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Old 07-01-2007, 11:52 PM   #4
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Default Re: Spark plug gap for standard NGK in DA-100?

Thanks guys! I set them at .018. I appreciate the help!

Seth......................
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Old 07-08-2007, 01:32 AM   #5
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Default Re: Spark plug gap for standard NGK in DA-100?

.018 is the right number. You can go down to .017 but for our purposes .018 is the one.
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Old 07-10-2007, 11:13 AM   #6
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Default Re: Spark plug gap for standard NGK in DA-100?

kewl good scoop to know
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Old 07-10-2007, 12:58 PM   #7
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Default Re: Spark plug gap for standard NGK in DA-100?

Hi!

It reads in a NGK CM-6 plug package that the spark gap is set to 0,4mm.

I measured one and it is exactly 0,4mm. That equals 0.01575 inches.

Atleast DA-50R uses CM-6 plug.

What are the effects of slightly adjusting plug gap to a bigger or smaller gap?

Last edited by Olli-Matti; 07-10-2007 at 12:59 PM. Reason: typo
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Old 07-10-2007, 02:55 PM   #8
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Default Re: Spark plug gap for standard NGK in DA-100?

larger gap, bigger spark. Smaller gap, littler spark. Too small a gap and the spark will be too weak. To large a gap, and you may get misfiring or intermittent firing.
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