For Heil & Curotto products, go to Electronic Parts Catalog (EPC) at epc.partscentral.com or by calling Parts Central's Customer Service at 1-800-528-5308. Product manuals for Bayne can be found on www.baynethinline.com. For all other product brands such as Marathon or 3rd Eye, c Parts Central's Customer Service at 1-800-528-5308.