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Hi, This probably is a daft question. I have just bought a boat with an inboard engine for the first time. A 1gm10. The boat is in Liverpool England and I intend to keep her on the water and sail her through the winter. Winters are fairly mild. The sea "never" freezes. If I am running the engine once a week at least, what more do I need to do to look after it through the winter? Any help, advice greatly appreciated.
 

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You should be fine.. If you place an incandescent light bulb or a low wattage heater in the engine compartment your engine and oil will be warmer and the engine will be much more willing to start easily (assuming you have shore power available)

If there's a chance of a cold snap/freeze conditions suggest you be sure (if you don't already) to isolate your RW intake, esp with a glass strainer.. if that freezes and you sink you'll have difficulty collecting on any insurance.. happened to a friend of ours a few years back. He had heat on board, but a cold snap and power failure did him in...
 

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If it's really cold and won't start, don't keep on cranking. Close the RW intake, turn it over a few times with the compression lever up, then drop it down. As soon as she fires up, open the RW intake again. Other than that, a regular running will be fine. I'm going through the same thing at the moment - similar climate to Liverpool but a lot fewer Scousers (and hence a much lower crime rate) ;)
 

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Chances are he will have no trouble getting it to start. I had a 1 gm a few years ago. I was on the boat in mid January at about minus 15 C. I hit the start button for a lark and the darn thing started right up. Startled me and I took no time pulling the fuel shutoff knob.

Does your engine have a heat exchanger so that radiator fluid runs through your engine and that mixture is cooled via sea water in the exchanger. That would make it a 1GMF. If so make sure the rad fluid is fresh and at the right concentration or change it out.

Then you will only have to worry about the sea water freezing in the exchanger, not sure if it will get cold enough for that to happen.
 

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Winters are fairly mild. The sea "never" freezes.
Water temp (thinking about 2c/35f or warmer) never freezing will help from having problem with motor in all but
the occasional extreme cold spell. Here on Long Island sound
New York City area, I sail until early/mid Dec.
when cold I cover my 3GM with blanket trapping some of the warmth from the water below but if unusually cold
I have installed a valve, at the raw water intake, so I can winterize fast and easy.
As suggested, if I could leave a light bulb on that would
that would do it.
Point of info...when starting Yanmar in cold, start at near full throttle then throttle back after starting.
 

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Discussion Starter #6
Thanks, guys. Some good suggestions there. No it is a straight 1gm10. Running like a dream at the moment and I would like to keep it that way! Always had smaller yachts with outboards before and it's a bit of a steepish learning curve.
 
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