Re: Johnson TD-15 or TD-20

[aquasonic]

quote legendre:

On the port side of the powerhead, very near the bottom there is a flat rectangular region (On the TD20, the arched water line passes above this area).

The model ID is stamped there, along with the serial no.

The Model/Serial No. stamp would be the defining feature. No need to remove the lower cowl to see that. Almost all of the parts are identical to the TD-20, so who knows what has been mixed and matched over the years.

The TD-15 was manufactured in 1941 and 1942. The manufacturing for civilians ceased during WWII. After the war, in 1946, civilian production resumed, and many of the pre-war motors were produced with minor changes for a few years after that.

The TS, TD, HS, HD, and Zephyr come to mind, but I’m sure there were many others. Garry could elaborate on that.

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