Help identifying 1940s johnson

[mrhtx]

Wondering if someone could help me identify exact year and some specific info on a old motor that belonged to my grandfather I know it’s a Johnson 5hp but only come up with a window for the year which is 1946-49
MODEL IS TD 20 WITH SERIAL NO. 517327 (SEE PICTURES )
anyone could help with specifics on it and any service info as I would like to get it cleaned up and possibly functional depending on extent of repair

• This topic was modified 5 years, 6 months ago by mrhtx.
• This topic was modified 5 years, 6 months ago by Mumbles.

[bobw]

Got any pictures? A serial number?

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[mrhtx]

Sorry totally forgot to add the info so it is a TD 20 with serial number 517327

[bobw]

That would be a 1946 model.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[mrhtx]

Ty bob could you give me brief explanation on how it decoded

[lloyd]

Those early TD’s usually still have good coils, but you will want to check them with an Ohm Meter. Should have about 3.5 Kila Ohms in the secondary winding. Compression will need to be 70-75 Psi for it to idle and run well. You will also need new Leather primer seals and instructions to install them. If so, send $10.00 cash and a self addressed stamped envelope to: Lloyd Lautner, 9289 North Long Lake Road, Traverse City Michigan 49685
More good info at: pochefamily.org/outboard

[bobw]

There is a serial number listing in The Old Outboard Handbook by Peter Hunn. A good book to have in this hobby.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[Mumbles]

Here’s a list of serial numbers for US built Johnson motors

and a list of Canadian built motors.

[jeff-register]

Thanks Jim,
Check your compression & if not will not idle. Oh no somebody already said that! It’s a horse of a different color.
Jeff

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