Removal Procedure
- Remove the screw (4).
 
- Remove the button (3).
 
- Remove the spring (2).
 
- Remove the knob (1).
 
Installation Procedure
- Install the knob (1).
 
- Install the spring (2).
 
- Install the button (3).
 
- Install the screw (4).
 
Ensure that the screw is fully driven, but not stripped.