SELOC Marine maintenance and repair manuals offer the most comprehensive, authoritative information available for outboard, inboard, stern-drive and diesel engines, as well as personal watercraft. SELOC has been the leading source of how-to information for the marine industry since 1974. Designed and written to serve the needs of the professional mechanic, do-it-yourself boat enthusiast, instructor and student, these manuals are based on actual teardowns done by Chilton Marine