Niemuth Implement - New & Used Agricultural Equipment Sales, Service, and Parts in Stetsonville,, Niemuth Implement is an agricultural dealership located in Stetsonville, WI. We sell new and pre-owned tractors, UTV, equipment, and mowers from Mahindra with excellent financing and pricing options. Niemuth Implement offers service and parts, and proudly serves the areas of Medford, Milan, Athens, and Owen.