🏷️ Basic Information Identification Make: Yamaha Model: 8LN Outboard Year: 1984 Generation: N/A 📋 Manual Details Documentation Manual Type: Service Repair Maintenance Language: English Format: PDF Features Searchable: Yes Bookmarked: Yes Diagrams: Exploded diagrams Content Coverage: Comprehensive (disassembly, repair, assembly, inspection) ⚙️ Engine Specifications Engine Configuration Engine Type: Inline 2-Cylinder Displacement: 212 cc (12.9 cu in) Performance Power: 8 HP (5.9 kW) Fueling Fuel Type: Gasoline Cooling Cooling System: Water-cooled 🔧 Transmission Gearbox Type: Forward, Neutral, Reverse Gear Ratio: 2.08:1 🔧 Maintenance Lubrication Gearcase Oil Type: Yamaha Gearcase Lubricant (or equivalent) Gearcase Oil Capacity: Approximately 190 ml (6.4 US oz) Ignition Spark Plug Type: NGK BR7HS-10 (or equivalent) Spark Plug Gap: 0.9 - 1.0 mm (0.035 - 0.039 in) Fuel Recommended Fuel Octane: 87 Octane (Minimum) Cooling Water Pump Impeller Replacement Interval: Recommended every 1-2 years or as needed General Propeller Recommendation: Varies based on hull type and intended use (refer to manual for specifics)