🏷️ Basic Information Identification Make: Yamaha Model: 4MHT / 5MHT Year: 1995 Generation: Not specified (pre-dates common generation designation for outboards) 📋 Manual Details Manual Information Manual Type: Parts Manual / Catalog Language: English Page Count: Not specified (typically varies based on model variations) Format: PDF Distribution Availability: Instant Download Compatibility Operating System Compatibility: PC & MAC Compatible (All Windows Versions) Features Diagram Type: Exploded Diagrams Part Identification: Manufacturer Part Numbers Usability Enhancements: Enlargeable Views Purpose Primary Use: Disassembly and Reassembly Aid ⚙️ Engine Specifications Engine Type Engine Type: Outboard Motor Engine Configuration: 2-stroke Displacement Displacement: Approximately 80-100 cc (estimated based on model designation for similar era outboards) Power Horsepower: 4 HP (for 4MHT), 5 HP (for 5MHT) Cooling System Cooling Method: Water-cooled Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) Fuel System Fuel Delivery: Carburetor Fuel Type Fuel Type: Unleaded Gasoline Oil Mixture Oil Fuel Ratio: 100:1 (Pre-mix, common for this era Yamaha) 🔧 Transmission Drive System Drive Type: Outboard Drive Gear Selection Gear Positions: Forward, Neutral, Reverse (F-N-R) Gear Reduction Gear Reduction Ratio: Not specified (specific to each model variant) 🔧 Maintenance Lubrication Gearcase Oil Type: Yamaha Outboard Gearcase Lubricant (or equivalent API GL-4 SAE 80/90) Gearcase Oil Capacity: Approximately 70-100 ml (specific to model variant) Service Schedule Initial Break In Service: Recommended (typically after first 10 hours of operation) Routine Maintenance Interval: Annual or every 100 hours of operation (whichever comes first) Maintenance Tasks Spark Plug Replacement: Recommended at regular intervals Water Pump Impeller Replacement: Recommended every 2-3 years or as needed