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Unknown 40hp mercury

mattwaggs

New member
My serial number is 0g058321 I need help identifying so I can get a wiring diagram it has a goofy 10 pin box plug on it now
Thanks
 
It's a 4 Cylinder correct?

If 4 cylinder, seems you would be looking for service manual 90-814676R1 that covers 30 Jet/40/40 Magnum (4 Cylinder) (U) 0C159200 and Above (0G589999).
(B) 9570305 and Above.
(C) 0A748269 and above.



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Couldn't find section 2_D that covers the wiring diagram but here should be 2-A ignition system if it helps any for the 4 cylinder.

This one covers 3 cylinders just as an example for you, https://www.manualslib.com/manual/1047119/Mercury-30.html?page=105#manual
 
You wouldn't happen to have a part number for the throttle and shift cables would you?
Hopefully you still have the original cables as they should help you out with this question as you should be able to locate the part number and size on the 2 cables themselves and with the helpful guide of the following video and then within the link from this forums hosting website, you ought be able to locate and order the needed cables that best fit your engine model and size.


 
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