what year is my engine?

wyoman74

Recruit
Joined
Mar 23, 2009
Messages
4
i have a 150 horsepower motor serial number is 3629898 off the block and 1440-3255 is number off swivel base have no idea what i have here!the cover says direct charge six and thunderbolt ignition what ratio is the mixture supposed to be?i am new to the boating world and am kind of at a loss here.
 

Dunaruna

Admiral
Joined
May 2, 2003
Messages
6,027
Re: what year is my engine?

Merc 1500, built in the US of A in July, 1973. 50:1 fuel mix ratio.
 
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