I purchased a 1981 25 HP outboard. The guy swapped out a long shaft and put on a short shaft. It seemed to run fine initially. It would pee properly in the tank, and when sitting at the dock, but had issues restarting after running a while. We thought it might be an electrical issue. After cooling down, it would usually start up again. Three times needing a tow back to the dock.
When I took it back to him, he said it was overheated and my fault. While testing it I had run it in a can of about 18 inches of water. It was deep enough for the water intake to be submerged, but wouldn't pee. When I put it into a deeper barrel, the same depth as the functional waterline, it would pee. I noticed there is an additional hole higher up that lies about 1 1/2 inches below the waterline when on the transom. If water went in there, it would pee, if not...no circulation.
I assume this is an added overflow or drain hole, but can not find pictures. I need to prove this guy sold me a motor that was not circulating properly. I believe that when running on th lake, this hole was not getting water due to hull displacement.
When I took it back to him, he said it was overheated and my fault. While testing it I had run it in a can of about 18 inches of water. It was deep enough for the water intake to be submerged, but wouldn't pee. When I put it into a deeper barrel, the same depth as the functional waterline, it would pee. I noticed there is an additional hole higher up that lies about 1 1/2 inches below the waterline when on the transom. If water went in there, it would pee, if not...no circulation.
I assume this is an added overflow or drain hole, but can not find pictures. I need to prove this guy sold me a motor that was not circulating properly. I believe that when running on th lake, this hole was not getting water due to hull displacement.