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Help With Mercury 4.5 Stator Wiring

R

rocknroj

Contributing Member
Good day I have an old mercury 4.5hp 2 stroke. Hope to get it running again and pass it on to someone. Lost my before pics and my books don't really show what I need. Trying to figure out the stator connections for the mercury 4.5 hp.. I have the wires layed out the way I think they need to go together once I get some nuts and screws. From what I read there is a low and high speed coil and it seems the wires are only long enough to go one way. Thanks again.

Pics are here...

https://www.flickr.com/photos/rocknroj/albums/72177720305251614
 
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Keep us informed of your progress with this engine. I have 5 of them 1967 3.9 (standard magneto), 1971, 1973, 1979, and 1985 Phasemaker gen 1 and gen 2.
 
fitz73222 said:
Keep us informed of your progress with this engine. I have 5 of them 1967 3.9 (standard magneto), 1971, 1973, 1979, and 1985 Phasemaker gen 1 and gen 2.
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I will do that.. Want to add another to your collection?..Alas shipping is prohibitive I think..

What year do you think mine is 75?

Gonna do some tests based on the doc you linked me.

This one ran fine when I got it, then I replaced the leaky fuel line from to the carb and never got it start again. It was too small for my purposes as I needed a 'get me home' trolling motor so I took it off the boat as soon as I got it. Figured I would fix the fuel leak before seeking a new owner. Now it sits in my backyard.

Was a freshwater motor used in CA before making its way up to me in Seattle.
 
rocknroj said:
I will do that.. Want to add another to your collection?..Alas shipping is prohibitive I think.. What year do you think mine is 75? Gonna do some tests based on the doc you linked me. This one ran fine when I got it, then I replaced the leaky fuel line from to the carb and never got it start again. It was too small for my purposes as I needed a 'get me home' trolling motor so I took it off the boat as soon as I got it. Figured I would fix the fuel leak before seeking a new owner. Now it sits in my backyard. Was a freshwater motor used in CA before making its way up to me in Seattle.
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Yes, yours is a 1975. Probably a little cost prohibitive from Seattle to North Florida. Just for the heck of it, what is your zip code? I've had motors shipped with Fastenal from around the country.
 
Been looking at this thing and the provided link on phasemaker. Perhaps mine has been monkeyed with but the kill switch definitely provides continuity when pressed. There is a ground connection to the mounting screw for the condensor/capacitor... Seems the generator coils and capacitor are good. That skinny braided wire that runs under the secondary coil and sits between the frame and the coil sure seems like a sketchy way to get ground. Here is a pic with some annotations of my connections.. Seems I should be able to get as spark without the kill switch. Am I correct?

https://www.flickr.com/photos/rocknroj/52664919541

52664919541
 
The engine was running before you replaced the leaking fuel line, so make sure the wires are connected the way they were when you started this? if the engine lost fire after you repaired the fuel line, I would be looking for a broken wire somewhere
 
make sure the white plastic points insulator is not cracked! It will leak voltage there and ground itself. continuity test on the white points wire to screw that goes to breaker. to test if points and wire/insulator are the culprit, simply take off white points wire from coil and turn motor over while tapping it to ground. if it sparks, check as mentioned. do not get shocked this ignition is nasty!
 
Can I please ask a huge favour? In your last post, you state. "the white points wire to screw that goes to breaker". How does that white wire get attached to the screw (that attaches to the Breaker?). This screw goes through the "Plastic Points insulator" and "bolts to the breaker". I understand that. However I am at a total loss as to "How the White Wire attaches to the back of the "screw" within the white plastic insulator? All I have is the screw/nut and the back section of that screw that lives in the white plastic insulator. It is just a small flat metal nub with no apparent way of "successfully" attaching the white points wire, which then goes to the coil. Can you advise if I have something missing or am I just missing something as I would have expected some form of electrical connector to attach the white wire.
 
Been quite a while. Never got it running and its sitting in my yard. Not sure how much dismantling I would have to do to get a better look... Will see.. Pretty busy I am.

Did you try searching for some replacement points one ebay? Maybe get a good pictures... Attached is the best picture that I have.


I may be parting out this motor since I cannot get a reasonable offer for the whole thing. Super clean no salt.
points.JPG
 
Hi, Firstly, "Thank you" for the quick response and the photo! It's not the "Points" I need. See the White Plastic Block/Insulator at the top right of your photo? The one with the nut and bolt protruding out towards the points? That "nut/bolt goes through that white insulator assembly and has a White wire soldered to the back of the bolt . That "nut/bolt wire" is the part that I need as it is now an "obsolete part" (the Nut/bolt), (insulators are still available) but easier to buy it complete! Such a small part but such a big headache! If you decide to part out this motor, please keep this part aside for me as there will be other "bits" I need if you go down this path. Thanks again. Brian
 
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