🏷️ Basic Information Identification Make: Yamaha Model: Outboard Engines Year Range: 1984-1990 📋 Manual Details Documentation Manual Type: Complete Service Repair Manual Format: PDF Download Features Searchable Text: Yes Bookmarks: Yes Sub Bookmarks: Yes Index: Yes Quality: Improved Print Capability: Yes Backup Cd Creation: Yes Compatibility Operating Systems: Windows, Mac, Linux Delivery Download Type: Instant Download ⚙️ Engine Specifications General Engine Type: 2-stroke and 4-stroke Power Range Horsepower: 2 hp to 250 hp Cylinder Count Available Configurations: 1-cylinder, 2-cylinder, 3-cylinder, 4-cylinder (V4), 6-cylinder (V6) Displacement Range: 43cc to 3130cc Specific Models 2Hp 1Cyl 43Cc 2Stroke: Manual covers this model 9.9Hp 2Cyl 232Cc 4Stroke: Manual covers this model 25Hp 3Cyl 496Cc 2Stroke: Manual covers this model 40Hp 3Cyl 698Cc 2Stroke: Manual covers this model 50Hp 4Cyl 935Cc 4Stroke: Manual covers this model 75Hp 3Cyl 1140Cc 2Stroke: Manual covers this model 115Hp V4 1730Cc 2Stroke: Manual covers this model 150Hp V6 2596Cc 2Stroke: Manual covers this model 200Hp V6 2596Cc 2Stroke: Manual covers this model 225Hp 76Deg V6 3130Cc 2Stroke: Manual covers this model 250Hp V6 3130Cc 2Stroke: Manual covers this model 🔧 Maintenance Procedures Tune Up: Comprehensive tune-up procedures covered Lubrication: Detailed lubrication guidance Inspection: In-depth inspection guides Cleaning: Cleaning and inspection of parts Disassembly: Step-by-step disassembly procedures Assembly: Step-by-step assembly procedures Testing: Testing procedures for components Fuel System Carburetor Service: Covered Fuel Pump Service: Covered Cooling System Service: Comprehensive cooling system service Electrical System Ignition System: Detailed ignition system coverage Charging Circuit: Covered Cranking Circuit: Covered Wiring Diagrams: Included Transmission Lower Unit Overhaul: Covered Controls Remote Controls: Service information included Trim Tilt Power Trim Tilt System: Service information included Troubleshooting Guide: Comprehensive troubleshooting section Safety Boating Safety: Included Service Safety: Included