🏷️ Basic Information Identification Make: Yamaha Model: 4MHV / 5MHV Year: 1997 Generation: N/A 📋 Manual Details Description Manual Type: Replacement Parts Manual Manual Features: Illustrated, Exploded Parts Diagrams, Part Numbers Listed Purpose: Disassembly, Repair, Assembly Format File Format: PDF Compatibility: All PC & MAC Computers Availability Downloadable: Yes, Instantly Language Language: English Requirements Software Requirements: Adobe PDF Reader Distribution Distribution Method: Instant Download Shipping Cost: Free ⚙️ Engine Specifications General Engine Type: 2-stroke Cylinders: 1 Bore X Stroke: 52mm x 43mm (4MHV) / 56mm x 43mm (5MHV) Performance Displacement Cc: 93cc (4MHV) / 106cc (5MHV) Horsepower Hp: 4 HP (4MHV) / 5 HP (5MHV) Cooling Cooling System: Water-cooled Ignition Ignition System: CDI Lubrication Lubrication System: Pre-mix 🔧 Transmission General Transmission Type: Manual Forward, Neutral, Reverse Gear Ratio: Likely 1.85:1 or similar for this HP range 📐 Dimensions Weight Dry Weight Kg: Approx. 20-22 kg (4MHV/5MHV) 🔧 Maintenance Fuel Fuel Type: Unleaded Gasoline Fuel Mixture Ratio: 50:1 (Gasoline:2-stroke Oil) Oil Gear Oil Type: Yamaha Outboard Gear Oil or equivalent Gear Oil Capacity Ml: Approx. 70-80ml