Trying to get a Mercury 1976 700 running I noticed the mercury swith is missing. Do I need to get one? It's not listed in the parts manual. I have no spark.
It's a 77 Serial 4719543 if it will run without it I will not replace it. Just recieved the manual last week. I'm going through all the wiring. I replaced the stator but my have to replace the trigger. The trigger wire for cyl. 3&2 were switched. I'm getting a new multi meter today with the correct conducivity scales. The the insulation on the wires are in bad shape. Is is possible to get the complete wiring harness A-84-73204.
Trying to get a Mercury 1976 700 running I noticed the mercury swith is missing. Do I need to get one? It's not listed in the parts manual. I have no spark.
Good for you, that is what I do. I even have a couple of external harnesses where I have cut the plug in half, extracted the pins and rebuilt from there.
Good on you Ron, go for it! I am 5 years and my first heart attack behind you and I have never had so much fun as I am now.
Hope the same goes for you.
Yes the motor will run normally without the mercury switch. Its purpose is to disable the ignition when the engine trims/tilts up beyond the point where the prop could come out of the water. It's a safety thing.
As for the harness, I believe they are still available for about $100 from a select few places. I think OLDMERCS dot COM is one source.
Absolutely x2 on this. DO NOT BUY NEW OLD STOCK OR USED Mercury anything electrical/electronic from that 70's-80's vintage...the insulation compounds they used then literally break down into acids and corrode the wiring, just sitting on the shelf.
If I had $200+ to blow on a harness (instead of just making one myself) I would look at CDI.
