"I have my own small thoughts.
"I have my own small thoughts.
In general I would say that the Yamaha's runs more balanced and smoother than most of the OMC/BRP engines. That however is as long as they are new!
Out of the box quality seems to be better, less 'adjustments' needed on newer engine.
But give them some years and the situation might quickly change. The Yamahas starts their typical Japanese rattling, the OMC/BRP just keeps on as they did when new.
My biggest 'against' has nothing to do with the engine itself, but the use of mm in all bolts and threads!! You may pull out an UNC bolt from alu or even roughly drill it out if broken, and be able to re-thread without using heli-coil. The mm threads is a different story!
I have a feeling that might be one of the reasons that You may still find 50 years+ OMC engines running, they are repairable within reason. Salt water run Yamaha's from 80's and up, You need Nitro Glycerin to get apart.
But buying a 15 year old Yamaha, and if salt water run on top of it - I would think twice."