1993 60HP - which wires to test stator resistance?

twr7cx

Petty Officer 2nd Class
Joined
Apr 6, 2008
Messages
148
Basically, I have a 1993 Mercury 60HP 2 stroke twin carb 3 cylinder outboard (serial number is OC161680) with issues (see http://forums.iboats.com/showthread.php?p=2398807#post2398807 for more details). It has been suggested that I check the resistance of the stator, and I'm slightly confused on how to do this.

From my reading, the resistance should be:
Trigger Ohms - 750 -1400 Ohms.
Charge Coil Ohms - High Speed - 28 -32 Ohms.
Charge Coil Ohms - Low Speed - 500 - 600 Ohms.

Now, with testing the Trigger, I understand that, disconnect the lines from the CDI Switchbox, test the following:
White/black (white/black) to Purple, White and Brown, and the result from those 3 should be in the 750 - 1400 Ohms range.

But, how do I test the stator/charge coil? What is the go with the high and low speed resistances?
Here is a wiring diagram of my setup:



So the wires off the stator are: blue, red, and two yellow/reds. Where/what do I test and which is the high and low speed?
 

twr7cx

Petty Officer 2nd Class
Joined
Apr 6, 2008
Messages
148
Re: 1993 60HP - which wires to test stator resistance?

So I measured the Stator using a common earth/ground point on the outboard to:
Red (High Speed) - 143.7 Ohms.
Blue (Low Speed) - 12.89 kOhms.
Red to Blue -= 13.65 kOhms (I don't think I was meant to get this one).

Now, these results are completely out of the ranges. Ranges should be:
High Speed - 28 - 32 Ohms.
Low Speed - 500 - 600 Ohms.

Am I perhaps measuring the stator incorrectly?
As I read that the correct way to measure is from Red to Red/White and Blue to Blue/White, but there is no such colour wires that I can find!?!

Any thoughts or ideas?
 

twr7cx

Petty Officer 2nd Class
Joined
Apr 6, 2008
Messages
148
Re: 1993 60HP - which wires to test stator resistance?

It would seem that that the white striped wires are only on stators for units with twin Switchboxs (6 cylinder motors).
 
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