Re: 1940 Johnson HA-15 W/Video

[gjonz]

My experience is any of the little 2.5hp from the early 1940’s to the last ones made with a wobbler pump (instead of a plunger like yours) tend to run hotter than I’m used to…but the run fine.

You may want to check the water tubes and make sure they are tight and clear of debris so water can flow as free as possible. Just because it’s spraying doesn’t always mean the water is circulating fast enough or in large enough quanity.

But in all likelihood it is running as intended. Albeit…HOT.

There were issues with those motors suffering vapor lock in the fuel system owing to the carb being on the same casting as the exhaust. Mine also needed the magnets charged in the flywheel.

Good luck!

Greg