Translations:KAVAN FT160AR - Instruction Manual/82/en

Restoring the Mixture Control Valve Initial Setting

To adjust the carburettor, it is a good idea to have a short piece of clean fuel tubing on hand, through which you will blow air into the carburettor with your mouth. You can use the following procedure to make an initial mixture control valve adjustment. Close the carburettor rotor so that the diameter of the hole is no larger than the thickness of a modeller‘s pin (ca 0.7 mm). Place a piece of clean fuel tubing on the carburettor fuel intake nipple and open the needle- -valve 1-1/2 turns from the fully closed position. Now close the carburettor rotor completely and, while blowing gently into the tubing with your mouth, adjust the mixture control valve to a position where air just begins to escape. The correct operating position of the mixture control valve can then be obtained by opening it an additional 1/2 turn. The adjustment is further checked by opening the carburettor rotor while blowing continuously; you should notice a rapid change in airflow as soon as the carburettor is opened about 15 degrees from idle. Do not use the mixture control valve to set the mixture too rich in an attempt to reduce idle speed. Instead, close the carburettor rotor a little more and repeat the mixture control valve adjustment.