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Go to bloody decks and you will get some well seasoned knowledge on there. Just FYI they are a little more thick skinned there and expect you to be the same.
Go Yamaha 150 4 stroke and call It a day.
600 hours would be at least a yellow flag for me. Shaft length sounds fine. Cold start it, see how it runs and the water pump flow, check over the motor for corrosion and pull some oil out of the lower unit.
Quote from: Stein on May 02, 2019, 08:59:41 AM600 hours would be at least a yellow flag for me. Shaft length sounds fine. Cold start it, see how it runs and the water pump flow, check over the motor for corrosion and pull some oil out of the lower unit.i wont even say how many hours are on my yami 90
Agree with previous post but remember this is an older boat that likely was manufactured before 4- strokes were the norm. HP not the only factor in capacity plate, weight is. And 175 hp 2-strokes were probably about the same weight as today’s 4- stroke 100-115. The problem isn’t in the water, it’s all that weight sitting off the transom on the trailer and going down the road. Trust me, I have a friend that had a 2000’s welded aluminum boat with offshore transom and he stuck a much bigger/heavier 4-stroke outboard on it than the 2 stroke it came with. Ended up cracking welds and needed to be repaired and re-enforced. Your boat is riveted and not nearly as heavy duty, also probably a bit lighter and maybe even narrower than most boats like it today. So you can get away with less horsepower and should be somewhat concerned about weight and ability of the transom to support it.