year model ??

howsab0007

Cadet
Joined
Mar 16, 2006
Messages
18
i have a 50 hp mercury 4 cyl model#5951050...could somebody tell me what year this motor is? also having a problem running in water (under load) on land it runs great but you put it in water no power, just rebuilt carbs new fuel line and bulb... so what could make it loose power??? thx in advance!!!
 
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