Go brand new if you can afford it but dont buy another secondhand one. Rebuild what you have. 90 Yamahas are good engines

[QUOTE=Allmc]Can anyone give me an idea what a full rebuild is likely to cost ?

I replaced a '94 Evinrude 90 hp 2 stroke in 2016 with a new Yamaha 90 hp two stroke. I'm getting almost twice the fuel economy running at cruising speeds. Get a trade in deal for your old motor, get a deal for your new motor as it's coming up to winter, you won't regret it. New motor starts like a dream even after couple of months sitting.

I'd suggest, if you were mechanically inclined, know your way around an engine and had access to the service manuals for your engine, you can rebuild it. It might cost a penny in terms of parts and the odd special tool, but nowhere NEAR having it done for you - and you can have the satisfaction of knowing that it was done right.

As still don't know what boat it is.. Assuming being a 90hp original engine around the 95s..something like a 4.8 to 5.2m..
Around 1000kg fully loaded gross weight on the water.
A 115hp 2 S around 2002 to 2008, around 250 to 450 hrs up.. Service record... Fair price around the $5500 /6000 for 450 hrs. And 7k 250 hrs
Now keep in mind that these engines will see over 2000 hrs if we'll maintained..
Putting this into the real world, family boat and fishing with the m8s
Head out from kawakawa Bay all the way upto gannet or over to the muscle farms, you will put up 45 to 75 minutes for the day.
If you get out every 2nd weekend.. Which will be impossible cause there will not be enough weekend weather windows.. So at most may 10 trips..
That's 10 hrs per Yr....

And if the engine has say 300hrs and is a 2006.. That's 13 yrs.. 23 trips per year.. Or what most likely happened is the ign switch has been left on a couple times.. Grandchildren touching stuff..
There are a lot of poorly maintained, way over priced, engines around... And a good number fairly priced, damn good engines still in near new condition that don't last long on the market.
I have no issues buying 2nd hand... With eyes wide open

90 nice for that boat 115 will give better economy max or slightly over powered..
You will get a far improved ride in chop with significant better economy
Also since the115 will not be working as hard at cruise speeds, will be significantly quieter.. Normal talking volume.
Down side.. Make sure by asking and visually checking everyone is holding on on take of... It gets pmon the plane very quick.

Another thing.. If up grading, to the same make, check if controls, gauges, looms are the ssme/complatable with the old model.
It saved a lot of time, and crawling around, when I went from the 2004 v4 Johnny to the 2001 v6.
Everything the same except the face colour of the gauges... So kept the old gauges..

Steps wrote: 90 nice for that boat 115 will give better economy max or slightly over powered.. You will get a far improved ride in chop with significant better economy Also since the115 will not be working as hard at cruise speeds, will be significantly quieter.. Normal talking volume. Down side.. Make sure by asking and visually checking everyone is holding on on take of... It gets pmon the plane very quick. Another thing.. If up grading, to the same make, check if controls, gauges, looms are the ssme/complatable with the old model. It saved a lot of time, and crawling around, when I went from the 2004 v4 Johnny to the 2001 v6. Everything the same except the face colour of the gauges... So kept the old gauges..