[link]http://saito-engines.info/index.html[/link]

Try this site. It's very helpfull.

I've recently bought two Saito .56's. Both of them started right up on the bench. Are you priming as per Saito instructions? Full open, finger over muffler, and flip thru untill you see fuel go up to the carb. I ran mine with H.S. needle open 3+ turns. You really want them running so rich at first that you can't remove the glo ignitor. And try to keep the rpm's low, at least for the first tank or two. Theyu really don't start getting broken in untill you get a gallon or so of fuel thru them. Easiest thing is to try and run them WFO so rich they won't run very fast. Should be making huge cloud of smoke and spitting fuel/oil out everywhere. Especially thru the vent line on the bottom of the engine.

The fuel siphoning thru the carb is norm, only real fix in airplane is to make sure throttle is closed all the way when shutting down. Just be sure after fueling to turn engine thru a couple turns by hand to ensure it's not hydro locked. I have one engine mounted in plane with fuel tank about 1" above centerline of carb, and it runs fine. Other plane has "t" fitting in fuel line to fuel and it drips fuel out the carb all the time. Both are inverted. I look at it as self priming instillation. BTW, I don't run on board glow with either one and they idle fine, using OS type "F" plug. They're $7 each but worth every penny.

Andy