A valve timing control device includes a drive pulley 2 driven by a
crankshaft of an engine, and a driven camshaft 1. The camshaft 1 has a cam
70 that serves to open and close an intake port 72. An engine valve 71 is
spring-loaded by a valve spring 73, whereas the cam 70 opens or closes the
engine valve 71 against the bias of the spring 73. Torque is transmittable
between the drive pulley 2 and the camshaft 1, and a rotation angle
adjusting mechanism 4 is provided therebetween. The rotation angle
adjusting mechanism 4 has a movable operating member 11 being movable in a
radial direction.
