I have been working on this outboard and the tach was not operating when I first got the outboard running. The electrical system was not charging the batter and I found a bad regulator/rectifier. I replaced that and now the tach is doing this. When I pulled the wiring harness plug out of the from of the remote control, I found some corrosion on the grey tach wire hole, and have not had a chance to correct this yet and test it. Any other thoughts?
How would I test if the stator is failing (follow test in Seloc manual?/ I'm not seeing any other symtoms (i.e. o/b runs good, charges good, etc.))?
How would I test the tach?
If I need a new tach, what do I need to know to order one? Someone said I need to know the number of poles on the stator. I believe I counted 10. Is that all?
As a follow up, this tach problem has been there from the beginning of getting the boat in the water, and now I have a new problem which I am wondering if it may be related. See thread
1980 Mercury 40 hp outboard tach problem
Linear Mode
