Service part / kit · Full KVA Adapter Kit - Plugs into the 120/240V NEMA 14-50R receptacle on the case front (which accepts 4-prong plugs) and converts it to a NEMA 6-50R receptacle (which accepts 3-prong plugs) for connection to Lincoln Equipment with a NEMA 6-50P plug, · qty 1 — part number K1816-1. Used by the engines and generator sets below.