You must be talking about the MERC 4 stroke Verado......I will take the little added weight for fuel economy, no oil, no smoke, no noise. Also, based on Yamaha weights.....the 150 4 stroke is actually 2#'s lighter then the 150 HPDI. On the larger motors the 4 strokes are about 8-10% heavier then the HPDI. 225 HPDI = 539# compared 225 4 stroke 583....
As far as CARB motors....well those are history. Yamaha still makes a 150 one.
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