ORIGINAL: deputydog
The age old fight between YS and Saito..... Compare prices YS 110 to Saito 150, YS 63 to Saito 90, YS 140 to Saito 200.... thats also the power comparison. Also if you assemble your tank as per mfgr with 1 fuel line and 1 press line, you should not have a tank problem. The only thing added is a T in each line for fueling and press release.
Saito's are great motors and YS's are Awesome so either way, you cant go wrong.
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YS is top dawg of the four-strokes in power and tractability. No doubt.
While I am a Saito enthusiast, I do not see where they are one whit better than OS - just different.
I own all brands of four-strokes, or have, at one time or another, with the exception of a Thunder Tiger. And I'm working on getting one of those too.
Owning a bunch of engines doesn't make me an expert. What I'm trying to say is that I'm not taken with just one brand of engine to the exclusion of all others. To me, they all have advantages and disadvantages.
Ed Cregger