Abstract: A coupling device for use in diesel fuel injector pumps having a plurality of rotary pumps connected to a drive shaft and positioned in a housing along a longitudinal axis and having a generally cylindrical weight retention housing for rotatably supporting a plurality of flyweights which are coupled to a fuel control system. The coupling device employs an annular drive ring adjacent to the weight housing for engaging the drive shaft and a plurality of drive pins connected to the weight housing and projecting through elongated apertures in the drive ring. A plurality of resilient inserts are positioned within the elongated apertures immediately adjacent to the drive pins so as to occupy substantially all aperture volume not occupied by the pins.