Update – Johnson K35 Ignition Testing?

[John Gragg]

Edit: So I pulled the coil off the mag plate today. Quite a difference from the magneto I’m used to working on.

Cleaned up the coil and got a (I think) really good reading out of it. (See attached pic)

Straight thru the coil is about 8.8k ohms and (what I assume is the secondary windings) is .01 or .00.

 

Thank you to everyone who helped out.

Am I good to go here?

 

Good Day All,

My buddy brought over the Caille Liberty Twin and the Johnson K35.

He’s cleaned up the Caille a little bit, a pic is attached. It needs a transom clamp. Does anyone have any leads on one?

It is also in need of the brass strap that goes across the “U” shaped part of the magneto. Pretty sure that is equal to unobtainium, but need to ask anyway.

He’s not looking for it to run, in fact he wants to hang it on the wall. So just day-dreaming on a couple of ‘nice if we could find’ parts.

Next is the K35. He wants me to try to get it running. The magneto is not installed but I think I have all (most) of the parts. Here is my big question:

How do I test the coil? I googled it and followed the procedure but can’t get any measurements that mean anything. The plug wires are as good as shot, and I suspect the coil may be as well.

Also – When I try to test the points for open/closed continuity I am getting continuity EVERYWHERE. I have enclosed a picture of the points and the pivot point where I think maybe there is supposed to be an insulator? I took the points apart and cleaned everything so there is no grease or oil causing this.  Any help?

The pen is pointing to the arm that the points pivot on, where I think I need an insulator?

Thanks all!

John Gragg
RIverside, CA

Just starting in the hobby, please be patient.

48 Sea King 5hp GG9014A. Sold
49 Sea King 5hp GG9014A
48 Johnson TD20. Sold
49 Johnson TD20. Sold
54 Johnson QD15. Sold
55 Johnson CD12. Sold
57 Johnson RJE-19M
57 Johnson RDE-19

[eltoquad]

I believe Canadian member Bob Skinner has or had those magneto straps reproduced.

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John Gragg

[Tubs]

He should be watching eBay. One just sold on there last month.  

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

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John Gragg

[Tom]

No insulator is needed at the pivot of the point assembly.

Disconnect the condenser and coil from the points. Put a piece of paper between the points, and measure continuity across the points. There should be none.

Do not assume the coil is bad until only the coil has been tested. This coil needs to be tested across both high tension terminals, not from one terminal to ground. If you think the wires are bad, remove them and look into the recesses where the wires went. You should see a metal tab that is attached to the bottom of the coil in each recess. Check continuity between these tabs, but be sure your probes don’t contact the mag plate. If you get something in the kilohm range, the coil is likely good. You do not have to remove the coil for this test.

T

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Sam M.

[Author]

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