Seloc Marine offers the most complete, step-by-step marine repair manual for outboards, inboards and sterndrive engines. They are designed and written to serve the needs of the professional mechanic, do-it-yourself boat enthusiast, instructor or student. This manual covers all OMC Stern Drive 1964-1986 (Not Cobra Drive). Here are just a few of the items in this manual that make your repair jobs easier: Expanded index to quickly locate information; Wiring diagrams; Detailed procedures; Step-by-step troubleshooting; A glossary to identify unfamiliar terms;