be used when a force is applied to the finger throttle 26 moving it toward the handgrip 12 the fulcrum wheel 18 mounted on an axle 19 causes the load side of the finger throttle 26 to move away from the handgrip 12 the load side of the finger throttle 26 is attached to the connecting lever bracket 20 with load side pivot screws 32 when the load side of the finger throttle 26 moves away from the handgrip 12 the force side of the connecting lever bracket 20 moves away with it the connecting lever bracket 20 pivots at the thumb throttle pivot point 14 which causes the load side of the connecting lever bracket 20 to move in the same direction as the thumb throttle 30 since the load side of the connecting lever bracket 20 is attached to the thumb throttle 30 this sequence of finger initiated events causes the thumb throttle 30 to move in the same manner as it would if it were moved using the thumb this double lever action is what enables the finger throttle to move the thumb throttle without altering any of the original equipment manufacturer 39 s throttle mechanisms cables or linkages in fig4 the mechanism of attaching the connecting lever bracket 20 to the thumb throttle 30 is illustrated each connecting lever bracket 20 has a grasping tab that is formed first by bending a tab toward the handgrip 12 and then making a second bend running parallel to the handgrip 12 this double bend enables the tab of the connecting lever bracket 20 to wrap itself around the thumb throttle 30 to ensure the tab stays securely in place an adjusting clamp 22 is firmly forced.