1976 Mercury 650 65 HP 3 Cylinder

ominous

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Jun 26, 2012
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I just recently bought my first boat...yea for me! But I have a question regarding the oil that I need to use for the bottom of motor. Is this any type of oil? How do I proceed in pouring the oil in? Correct me if I am mistaken but I've been told that I will need to take both screws off, let any oil drain out and fill in the proper oil through the bottom screw, once top screw hole is letting oil out I put this screw in and put bottom screw in as well. Does this make sense? Will I need to be doing this every month or is it best to drain prior to winterizing and put in new oil at the beginning of the season?

Thanking you in advance for your assistance.
 
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