KG Spark advance stabilizer

Mercury Outboard  general discussion

KG Spark advance stabilizer

Postby AU52N » Wed Jul 10, 2019 8:34 pm

There has been a length discussion as part of a thread on getting a KG7H engine to run correctly and in that discussion there mention of max spark advance on these engines. A while  back in one of our purchases of Mercury parts collections we obtained a Quincy made item that would hold the advance lever in what ever position you wanted.  We have since sold the part but we have a copy of the operating instructions which I have attached to this post.

David
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Re: KG Spark advance stabilizer

Postby Locomotion » Thu Jul 11, 2019 8:58 pm

David,

Thanks for sharing this information.
That is an interesting part, does the ball just sit in a recess?

Thanks again,
Ray
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Re: KG Spark advance stabilizer

Postby AU52N » Fri Jul 12, 2019 12:02 am

yes

I have levers that were partially drilled like counter sunk but neve new why until I saw this part
David
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Re: KG Spark advance stabilizer

Postby Tom Brockmeyer » Fri Jul 12, 2019 1:46 am

AU52N wrote:yes

I have levers that were partially drilled like counter sunk but neve new why until I saw this part
David


The blind hole gets a spring, then the ball bearing, then got "staked" so the ball could protrude, but not come out.   It's commonly called a "Ball Detent".  I just put them on my interior french doors in the house so I wouldn't need real hardware for doors I won't lock.
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Re: KG Spark advance stabilizer

Postby AU52N » Fri Jul 12, 2019 2:37 pm

Tom, I was saying the spark advance lever, not the Quincy part, was drilled to form a dimple in the lever arm so the ball could rest into the detent.
David
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Re: KG Spark advance stabilizer

Postby Tom Brockmeyer » Fri Jul 12, 2019 6:08 pm

AU52N wrote:Tom, I was saying the spark advance lever, not the Quincy part, was drilled to form a dimple in the lever arm so the ball could rest into the detent.
David


Oh... 10-4.   I thought you meant the Quincy parts with blind holes.  Didn't seem like any of those would have gotten away without the ball & spring!  Thanks!
Lake Lanier, 30miles North of Atlanta, GA
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