Remove seat and chair frame from box.
Attach handles to chair base: yellow (rotation) handle to centrally located lever and white (slide) handle to recessed lever.
Invert seat with chair back toward you. It is best supported on a small sturdy box.
Invert chair frame over the seat with central handle facing you and align bolt holes.
Locate four 1/4” x 1/2” bolts and four spring washers in parts bag. Tighten screws with washers firmly into four holes.
Set chair upright. Make sure centre handle is at rear of seat. The chair must start in the “home” position.