help id'ing carbs...

stackz

Master Chief Petty Officer
Joined
May 29, 2008
Messages
830
ok, neighbors boat engine is an 86 model 175 supposedly. i say this because it was a state owned boat and looks to be cobbled together. its got a 175hp powerhead on it and what looks to be 3 mismatched carbs that have had varying degrees of "work"/rigging done to them in the past. here's the numbers on the top side of the mounting flange for each.

#1 = 66605 S 621400-061 p5Y01B
#2 = 66403 S 621400-131 p5702P
#3 = 664038(4?) S 621400-141 p6801F

can anyone tell me more about these carbs/factory jetting etc?

I tried plugging numbers into google and got nothing.
 
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