PURPOSE: To simplify mounting adjustment in necessary cases by providing an actuator driven means adjustable along a tubular housing slidably mounted to a linear actuator shaft; and a lock means for fixing and releasing the housing to or from the actuator shaft.

CONSTITUTION: An actuator shaft 18 for operating a control valve or the like with a motor 10 is provided with a shaft housing 24 wherein a tubular member 26 and a manually controlled lever assembly are mounted. Handle 32 is operated to fix or release the shaft 18 and the housing 24. Further, a sleeve 42 is fixed to the housing 24 in a desired position by a screw 44. A flange 46 is pivotably mounted to the sleeve 42, and a control arm 30 is affixed to the flange 46 through a nylon washer 50 by a stop screw 52. Consequently, an associative motion with a main valve can be made easier and mounting adjustment can be carrier out in necessary cases by connecting the control arm 30 to a manual handle 54 and connecting a second control valve 22 to the bottom of an opposite side of the flange 46.