Also as Lx says, do not take this too seriously. These things soldier and smoke on forever. Rebuild. Enjoy. Buy more.
This is a non-invasive, pre-purchase inquiry.
I recognize it’ll need a rebuild again, and maybe again. So do aircraft engines. Used to that.
Just looking for guidance.
If the dang thing seems to run real good right now, with that many hours (~150/350) should I *normally* expect a rebuild RIGHT NOW, SOON, or after 200 more hours?
Fir instance, I have NEVER had to have my Stihl chainsaw motors rebuilt. Ever. Many a bar, chain, pull cord and spark plug, but NEVER the engines.
Just don’t know jack about these Yamaha waverunner motors.