A seed planting unit of an agricultural implement may include a depthadjustment assembly having a cam member and a depth adjustment gear rotatablycoupled to the cam member. The cam member may be configured to be rotated toadjust a vertical position of a wheel of the unit relative to a groundengaging tool ofthe unit. The seed planting unit may also include an actuating memberconfigured torotationally drive the depth adjustment gear. The depth adjustment gear andtheactuating member include interlocking engagement elements, such that when theactuating member is rotated, the cam member is rotated relative to the supportstructure to vary the penetration depth setting for the ground engaging tool.
