An electrically operated solenoid for controlling a valve mechanism,
including a coil assembly, a magnetic armature defining a passage
extending therethrough, a pole piece defining a passage extending
therethrough generally aligned with the passage in the armature, and an
actuator pin having a first portion disposed within the passage in the
armature and a second portion extending through the passage in the pole
piece for engagement with the valve mechanism. The actuator pin is engaged
with the armature such that reciprocating movement of the armature
correspondingly displaces the actuator pin to control operation of the
valve mechanism. An adjustment screw is threadingly engaged within a
threaded portion of the armature passage such that displacement of the
adjustment screw correspondingly adjusts a position of the actuator pin
relative to the armature along an actuation axis.