Chair control tension adjustment assembly

The specification discloses a chair control in which the pretension on the bias means can be adjusted by means of a bolt having a hollow shank with a retractable lever normally stored therein. There is a slot extending from the opening of the hollow shank down one side which can be engaged by said lever when the lever is retracted from the hollow shank and pivoted to one side. There is a retainer cap on the end of the hollow shank which includes an inwardly projecting annular lip which engages an annular rib on the lever to normally hold the lever in its stored position within the hollow shank of the bolt, even though the bolt is oriented upside down when the chair control is mounted on a chair. The lip is yieldable so that one can grasp the lever and pull it out past the lip when one wants to pivot it to one side and into the slot and thereafter rotate the bolt by applying a force to the lever.