Engine Control
TTP B1-L1 ATA76 Cessna 172 B2-L1 General - mixture control is the push-pull type that incorporates a threaded vernier mechanism for fine adjustment. The ball bearing rod end on the mixture control is secured to the engine with a predrilled AN bolt, a castellated nut and a cotter pin. NOTE: Steel AN bolts with an undrilled shank are identified with an 'A' suffix (AN3-6A). A steel bolt of the same size, with the shank drilled for castellated nut and cotter pin is identified as AN3-6. Aluminum bolts and undrilled bolts must not be used in this application. When adjusting the fuel mixture control , it is important to check that fuel mixture control slides smoothly throughout its full range of travel, that it adjusts through its full vernier range and the mixture arm operates through its full arc of travel. Do not lubricate fuel mixture control. If excessive binding is ...