Put a washer  onto a screw  for the striker plate.
Put the tool  against the spindle casting, adjacent to the striker plate .
Put the screw  through the bottom hole on the tool.
Use your fingers to tighten the screw.
Put the rocker spring  onto the screw  in the middle of the tool.
Use a socket wrench  to turn the middle screw .
Note: The tool turns with the screw. It pivots around the bottom screw .
Turn the screw until you can:
- Put a screw  through the top hole in the tool and into the striker plate. Use a screw you removed in Step 1.
- Turn the screw into the striker plate.
Tighten the screws for the striker plate.
Install the spindle head cover.