SELOC Marine tune-up and repair manuals provide the most comprehensive, authoritative information available for outboard, inboard and stern-drive 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 Selocas editors/authors in our on-site facility. Every manual features: a Easy-to-follow, step-by-step, illustrated procedures a Hundreds of exploded drawings, photographs and tables a Troubleshooting sections a Accurate specifications and wiring diagrams Covers all 4 stroke engines Only Seloc manuals include Skill level Ratings (1 - 4 wrenches) based upon the degree of difficulty along with Special Tool icons where a OEM or electronic testing tool is required to perform the specified procedure. Over 1,000 illustrations