Mainstays is a brand of bedroom, office and kitchen furniture handled and sold by Wal-Mart stores in the United States. Mainstays manufactures a wide range of office furniture, including the mid-back J-40 office chair. The J-40 comes in black and has rolling bottom wheels. This chair requires some assembly. It can be assembled with common household tools and does not require a lot of mechanical or building experience. It will take approximately 30 minutes to assemble your Mainstays office chair.
Remove all the pieces of the chair from its packaging and check off all pieces against the parts check list inside the instructions.
Install the seat and base extending from the bottom of the chair into the wheel base and tighten the large nut by hand.
Flip the chair on its side and install the wheels by turning them to the right onto the posts protruding from the bottom of the legs.
Line up the bolt on the back rest through the hole on the frame and then fasten it down with the large plastic nut.