PowerHead I.D. & compatibility

droptheline

Petty Officer 2nd Class
Joined
May 2, 2008
Messages
109
I have a nice working 75-90 hp powerhead that im trying to find a mating midsection for. I had called yamaha with the serial # on the welch plug and the had told me it was not enough info to give me an aswer on what year/hp it was. I know its a 75-90 because its a 3 cylinder with 10 bolt head patter says my clymer manual. I know its probably atleast a mid 90's because it has electronic ignition advance. I have been told that 75-90 hp midsections/powerheads are all interchangable so long as they were made within a certain time span of eachother. Anyone got any more info on any of this?
Thanks!
 

droptheline

Petty Officer 2nd Class
Joined
May 2, 2008
Messages
109
Re: PowerHead I.D. & compatibility

no one has info on 75-90 yamaha powerhead swaps?
 
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