A seed planting unit of an agricultural implement may include a wheel supportarm having an upper portion and a lower portion, the upper portion defining adepthadjustment slot. A wheel may be rotatably supported by the lower portion ofthewheel support arm, the wheel configured to contact the soil surface to defineapenetration depth setting for the ground engaging tool relative to the soilsurface. Adepth adjustment lever is selectively movable relative to the wheel supportarm tovary the penetration depth setting for the ground engaging tool. The lever mayinclude a guide pin that is configured to be received within the depthadjustment slot,the guide pin configured to move within the depth adjustment slot as the depthadjustment lever is moved relative to the wheel support arm to adjust averticalposition of the wheel relative to the ground engaging tool.
