Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 68Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 68

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MAINTENANCE
Seawater section of cooling system MUST BE COMPLETELY drained for winter storage, or immediately after cold weather use, if the possibility of freezing temperatures existsFailure to