Abstract: A single lever control for controlling engine, said control having a housing, a throttle actuating arm and a clutch actuating arm operatively connected thereto for rotation only during the first portion of rotation of the throttle actuating arm, said arms adapted for connection to the cores of push-pull cables for opening and closing the throttle and operating the clutch of said engine, the improvement comprising a warm-up auxiliary throttle lever operatively attached to a bracket means slidably mounted on said housing, said bracket means attached to the throttle cable conduit to move the cable conduit relative to said throttle cable core thereby adjusting throttle setting of said engine, interlocking means including an interengaging means carried by said bracket means, said interengaging means when engaging the outer surface of said throttle actuating arm prohibits the movement of said auxiliary throttle lever when said single lever is moved generally away from its neutral position and said interengaging mea