1991 Yamaha Outboard3MSHP Outboard Repair Maintenance Manual. This Factory Service Manual is the absaloute 100 best manual available for your Outboard. This complete service manual covers all repair topics such as:
Periodic Inspection and Adjustments
+many subsections of the above
All of the above have many subsections +Detailed Wiring and Circuit Diagrams, illustrations, photos, exploded views and step-by-step Instructions Diagnostics and similar topics.