I was wondering where most of you have your high speed needle at? factory says 5 turns out till break in is complete. I know ther are alot things that effect the final setting. My engine peaks out at about 2 and 1 quarter turns out, so I set it at 2.5 turns out. Does this sound right?

You take it up to top RPM then back it off about 300 to 500 RPM, Nothing you can't do by ear but a lot of people require a tach to do it.

There is no hard and fast rule as to where the needle ends up, only guidance is an overly rich starting point to work from. Once you tune it, that is where it is. Otherwise than that, it would be no fun! I had a guy at a hobby shop take my 10% fuel back and bring back a gallon of 20/20 fuel, told me I was nuts for even trying to run my Saito with 10% nitro. I have it tuned for it, and it runs fine - for me. So, my tuning would be different than if I had been running the 20%. I had to insist that I wanted the 10% fuel that I can run all my motors on. Make your changes slowly - also think of your personal safety- stay behind the prop! Be safe and have fun.

Yeah, with four stroke engines, you do not want to run it lean, so work it out to blubbery rich, then tune it as suggested above. Heck, you don't want to run any engine lean, so recommendations for rich settings follow for just about all engines. I run my OS's pretty rich, but not to rich where it just spits fuel and oil out the exhaust, although it does that anyway. If you don't see a smoke trail behind your aircraft, you might be a tad to lean, but that's not a rule, just an observation.

CGr

All of my Saito 1.00's have come EXCEEDINGLY rich on the L.S. needle out of the box.

I was having MINOR transition problems on a new engine ( My First 1.00 ), and I kept turning the LS needle in about 1/8th of a turn and testing.

Someone saw what I was doing and they suggested I just keep cranking it in until the engine just died at idle and then turn it back out about 3/4 turns. They told me that the Saito's arrived rediculously rich...

Well even after my attempts to lean out the L.S. needle, I had to take the needle in almost seven complete turns! Eight to get it to die at idle.

Once done the engine ran perfectly with NO problems what-so-ever.

Knowing this, I find the Saito 1.00 one of the easiest to tune engines I've ever owned.

While you NEVER want to run it rich, the Saito is incredibly tolerant of being run overly rich both on high and low ends.

Thank you all for your expertise. I did about the same adjustment on my low end needle. the only problem I got now is if I go to full throttle from idle it back fires and my prop will come loose. I hope this problem will go away after the engine is broke in.

your LSN is too far in if your engine backfires when you advance the throttle

The problem is not going away unless you open the idle LSN needle a little

Yup like he said, you went a bit too far. Back it out.

The Saito's will run a bit rich just fine.

Thanks again another problem solved. I opened up the LSN about quarter turn out, back fire went away. This was driveing me nuts. Not to mention the abuse my alum spinner was going through, as every time it backed fired the prop wouid come loose and hit my spinner.