About 6 yrs ago I was roped into taking a Saito 150 in a horse trade. The engine appeared to be about 1999 and had been flown a little but was in nice shape.

I ran it some at the time and oiled and put it away.

I converted it to CH ignition last week. I ran it today. Had the HS needle at three turns. Started right up but was very rich on 20:1 gasoline and Pennzoil Air Cooled. I adjusted the HS needle to 1 1/4 turns and it seemed to run decent. I turned the LS needle in about 1 turn from the glow setting. I was well pleased. It will run a long time on a 270cc (9 oz) tank.

The ignition change over was more or less plug and play thanks to TKG and bcchi . I'm using the RCEXL 1/4-32 plug.

I was using a APC 16 X 8 prop and it seemed about right.

I was well pleased considering the original Saito carb. But there was a rich mid range.

The needles didn't seem so sensitive to adjust but the carb was sensitive to the level of the fuel in the tank as it burned down.

The engine is not the high compression version. I did not use any head shims and I heard no back firing tendencies.

The last 1/4 of the throttle seemed to have little effect.

No smoke trail so needle setting is by sound.

The only black grunge came from under the exhaust valve cover and out the crankcase vent.

I got a few ideas I want to try yet so I will be playing with it some more.