Unknown OMC twin identification

[Flambeau5]

Hi all, I recently met a very nice gentleman who restores and works on Briggs engines, I got to talking with him and he offered to sell me 4 outboard motors he had not run in 30 years. The price was right so I bought them. the motors are as follows: 1929 Johnson k-45 7.15hp, 1936 Johnson ls-38 2.1hp, late 50s’ Elgin 7.5hp, and this motor. judging by the size and the fact its a twin I guessing its a 3-5hp. I don’t know anything about it other than it seems to have battery ignition with a timer and external coil of sorts. the wiring and coil look pretty rotted and would probably need replacing but could someone give me an example of how the wiring is supposed to work and hp/year info?

thanks in advance

[Tom]

The model number is stamped into the plate on the tilt bracket. If there are 7 digits, the model number is the first three. If it’s 8 digits, the model number is the first four. The motor is a 4 hp twin, early ’30’s. Check continuity between the two spark plug leads. If it’s in the kilohm range, it’s probably good. We can work out the wiring, it’s pretty simple.

You’ll likely want to bend the fuel line back to where it was so it’s not up against the muffler.

T

[wbeaton]

ELTO Service Twin with bronze lower unit and battery ignition. Lucky guy. Great find

What is the number on this plate?

Wayne
Upper Canada Chapter

uccaomci.com

• This reply was modified 5 years, 1 month ago by wbeaton.
• This reply was modified 5 years, 1 month ago by wbeaton.

[Flambeau5]

Got it running last night using the coil that was on it. To my amazement after cleaning the points,carburetor, and hooking up a 6v battery to the coil it fired right up and runs well. Even pumps water well. The model is 413 from the info plate. What would you guys do for servicing the lower unit and water pump? I would imagine it has seals that need replacement? I don’t have experience working on real old motors but I’ve done lots of 40s 50s 60s motors

Link is a video of it running
https://youtu.be/d7rjbFgqKrw

Thanks for your help

[Buccaneer]

Wow, runs like new!
Gotta ask, did you get zapped by the spark plugs yet?
In the video it looks like you hand gets might close to the plugs, lol

Prepare to be boarded!

[Flambeau5]

I got my lesson on exposed sparkies years ago, the painful way. I’ve learned to be mindful of my hands…

It does run sweet

[wbeaton]

413 is a 1933 Fisherman. It’s hard to beat a battery ignition ELTO.

Wayne
Upper Canada Chapter

uccaomci.com

[Flambeau5]

Thanks for the model info

[joecb]

Great find , and with the bronze “salt water” lower unit too. What part of the country did this come from? near salt water?

Joe B

[Tubs]

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 5 years, 1 month ago by Tubs.

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