Locked Headrest for Sihoo Doro C300 Chair

I had the problem with my Sihoo Doro C300 that the headrest rotated unintentionally every time I leaned against it. For this reason, I modeled a bushing that prevents this adjustment.

By replacing this bushing, the headrest always remains in the same upright position. Adjustment is therefore no longer possible.

Installation instructions

• Remove the two screws from the headrest. 
• You can now remove the headrest and replace the bushes. 
  
• To install, first insert a bushing and screw it tight. Make sure that the bushing is correctly connected to the opposite side and lies flush.
   
• After assembling the first socket, assemble the second one.

You can replace the bushings at any time and restore the chair to its original condition.