I have owned the following Yamaha 4stroke motors. 25hp 2005, 80hp 1998, 90hp 2000, 115hp 2001, 115hp 2003, 150hp 2007. I put 1000’s of hours on every one and never put a penny into em, other than oil and gas. They’re bullet proof!! (disclaimer… I never actually shot any of these motors)
The best part is as far as I know everyone of these motors are still going strong with no issues. I can’t even fathom the amount of hours on some of these motors. One of the motors has to have close to 10,000 hrs without any issues. I would never shy away from buying an older Yamaha.
When I went to Belize I asked my guide if he likes his Yamahas. They looked to be very very old. He nodded yes and pointed out that every single boat had a Yamaha and said, “Yamaha no fix!!”
Suzuki would be my second and only other choice.