The answer is simple.... the Dubro linkage mounts to the engine bearer, with the 'arm' pointing up (assuming that the engine is mounted vertically. The pushrod from the throttle servo goes to the bottom of this arm. Another short rod goes from the top of this arm to the engine throttle. There should have been a picture on the inside cover of the Dubro package describing this.

You can also make a link to your engine without the Dubro 4C arm. It's even simpler to do, but more difficult to describe without a picture. Maybe someone else will read this thread and post a photo. If not, I'll take the cowl off my Funtana and take a picture.

Let me try to describe it. Try to picture a very long throttle pushrod (made of stiff wire) that goes from the throttle servo out about 4" beyond the prop drive washer. Now, make a 180-degree bend back towards the firewall with this wire, such that the bend should now be behind the prop, (so that it doesn't interfere). The bend should be gradual, like the shape of the letter "U" resting on its side.

The end of the pushrod should now be near the rear of the engine, near the carb's throttle arm. Trim the pushrod to fit, and fasten it to the throttle arm using your favorite method (ball link, EZ connector, etc).

On the Saito, you can rotate the carb (if necessary) so that the throttle arm on the carb is on the same side of the engine as the pushrod.

Break that Saito in carefully, per the directions. It's a very sweet engine. I have one in my Rascal 40. Prop it so that the engine revs stay below 10,000.

I hope that my description is helpful to you.

Bob