Ford 2003 Mustang Workshop Manual page 2254

Installation
1. CAUTION: The actuator adjustment tool included with the replacement actuator kit
must be used when installing the supercharger bypass vacuum actuator. Failure to
correctly adjust the actuator will result in incorrect operation of the supercharger
assembly.
Install the actuator adjustment tool onto the actuator, making sure the tool is correctly attached
to the actuator rod. rotate the actuator into position until the rod engages the lever.
2. Install the actuator.
Align the actuator rod with the slot in the linkage.
3. Install the actuator bolts.