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post #14 of Old 11-26-2011
HenryMonsun
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I have a 74 HR Monsun, and have not seen that problem. But the integral tank makes cleaning difficult. In an old tank like this it is not surprising to see lots of sediments (brownish muck). Access is really limited, and I would like to get to the bottom of this, literally. I found that this brown stuff easily dissolves in Acetone or methylene alcohol. But in order to really flush the tank I would like to put a proper inspection hatch. There is space for that under the engine shaft, maybe 3x5''. I would pull the shaft, empty the tank and put a proper hole in there and then machine a fitting lid with a good seal. From what I see here there are people who have gotten inside these integral tanks. What can I expect when I start sawing in this inspection hole?
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