Went down to the boat this weekend and had a great sail Friday and Saturday. Both days I motored in and out of my slip with no over heating alarm coming on.
Sunday morning before going out again, I decided to clean the in line filter for the raw water pump (I believe that is the name for it). So I took it out and cleaned it like have done before and stuck it back in. Started motoring out and after a few minutes the warning light and buzzer came on for high temperature. I killed the engin, raised the sails, and then rechecked my work. Ah-ha forgot to open the seacock after I was done. So I figured I solved my problem.
We sailed all day long and then when it was time to come in I fired her up and after a few minuties the alarm come back on. I quickly shut it off and raised sails and sailed around for a bit, letting the engine cool. Again I check my work; opened and closed seacock a couple times, and took the filter out again and cleaned it and put it back in. Then sailed most of way to my slip and cranked the engine at the last moment and slipped her fast enough for the buzzer not to sound.
I left the boat quickly without looking at it and now I wonder what it was that went wrong? Anyone?
The engine is a 16h Yanmar
Small is beautiful, simple, cheap, and easy......
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