This document is the operating instructions for the O.S. TYPE 7H carburettor, which introduces the features and characteristics of the product.
This manual provides operating instructions for the O.S. Type 7H carburetor, a precision instrument designed for helicopter contest flying. It features an advanced design with a ball-bearing mounted throttle rotor and allows for independent adjustment of mixture strength across low-power, medium-power, and full-power throttle ranges.
It is for adjusting the mixture strength when the throttle is fully open.
Adjust the Idle Mixture Control Screw at idling speed, turning clockwise to make the mixture leaner or counter-clockwise to make it richer.
Adjust the Mid-Range Mixture Control Screw at hovering speed, turning clockwise to make the mixture leaner or counter-clockwise to make it richer.
It is used for establishing the minimum idling speed.