🏷️ Basic Information Identification Make: Yamaha Model: YTM225DRN Category: All-Terrain Vehicle (ATV) Sub Model: Dual Rear Wheel (DRW) Codes Engine Code: Often referred to by model designation Chassis Code: YTM225DRN 👋 Introduction Market Position Vehicle Segment: Utility and recreational ATV, known for its robust build and unique dual rear wheel configuration. Target Audience: Users seeking reliable all-terrain capability for work, farming, and recreation, valuing stability and traction. Competitive Analysis Key Competitors Era: Honda TRX series, Kawasaki Bayou, Suzuki LT series. Unique Selling Proposition: The YTM225DRN's defining feature is its dual rear wheel setup, offering enhanced traction and stability, particularly in challenging terrain or when carrying loads. Key Features Feature 1: Dual rear wheels for superior traction and stability. Feature 2: Torquey 4-stroke engine suitable for hauling and trail riding. Feature 3: Shaft drive for low maintenance and reliability. Feature 4: Rugged construction indicative of Yamaha's off-road heritage. 📋 Manual Details Coverage Areas Applicable Years: 1983, 1984, 1985, 1986 Region Of Origin: North America (primary focus) Page Count Estimated Pages: Hundreds (exact count not specified, but described as 'COMPLETE') Manual Type Type: Workshop Service Repair Manual Source: Official Factory Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Engine overhaul, carburetor tuning, ignition system, exhaust system Drivetrain: Transmission, drive shafts, differential (if applicable), chain drive maintenance Chassis: Frame inspection, suspension (front and rear), steering system, braking system Electrical: Wiring diagrams, lighting, battery system, starting system, charging system, ignition switch Bodywork And Trim: Body panel removal and installation, fenders, seat, handlebars Procedures Included Routine Maintenance: Oil changes, filter replacement, lubrication points, chain adjustment, spark plug service Troubleshooting: Diagnostic flowcharts, common problem identification and solutions Major Repairs: Engine disassembly and reassembly, transmission rebuild, carburetor overhaul, suspension component replacement Component Specific Procedures: Brake caliper servicing, wheel bearing replacement, carburetor jetting and synchronization Specifications And Tolerances: Torque values, clearances, wear limits, fluid capacities Technical Depth Depth: Comprehensive, covering all aspects from basic checks to complete engine and drivetrain rebuilds. Diagnostic Capabilities: Includes detailed troubleshooting guides for electrical and mechanical issues. Special Tools: May specify required special tools for certain procedures. 📊 Manual Specifications File Format Type: PDF (Portable Document Format) Searchability: Likely text-searchable due to it being a factory manual. Print Quality Quality Description: High-resolution, suitable for printing individual pages or the entire document. Binding Type Binding Description: N/A (Digital Download - user's choice for binding if printed) Paper Type Paper Description: N/A (Digital Download - user's choice for paper if printed) ⚙️ Engine Specifications Primary Engine Type: Four-stroke, air-cooled, SOHC Displacement: 225 cc Bore X Stroke: Exact dimensions available in manual, typically around 69mm x 62mm Compression Ratio: Manual specification, typically around 9.0:1 to 9.5:1 Valvetrain: SOHC (Single Overhead Camshaft), 2 valves Performance Horsepower: Estimated 15-20 HP (precise figures found in manual) Torque: Good low-end torque for pulling power (specific figures in manual) Fuel System Carburetor: Single Mikuni carburetor (model number specified in manual, e.g., VM32SS) Fuel Type: Unleaded gasoline (Octane rating specified in manual) Fuel Capacity: Typically 2.5-3.0 gallons (manual will confirm exact) 🔧 Transmission Standard Type: Automatic (Torque Converter with 3-speed gearbox and Reverse) Gear Ratios: Detailed ratios for each gear are available in the manual. Optional Optional Gearbox: N/A (Single transmission configuration for this model) Features Drive Type: Shaft Drive to rear axle Reverse Gear: Yes 📐 Dimensions Exterior Overall Length: Approx. 75-80 inches (manual will provide exact) Overall Width: Significantly wider than single-wheel models due to dual rear wheels; manual will confirm. Overall Height: Approx. 42-45 inches (manual will provide exact) Weights Dry Weight: Approx. 450-500 lbs (manual will provide exact) Ground Clearance: Approx. 5-7 inches (manual will provide exact) 🛡️ Safety Features Ratings Safety Standards: Adheres to industry safety standards for ATVs of its era. No formal crash test ratings as applied to cars. Active Features Braking System: Front: Drum; Rear: Dual Drum Brakes (for dual wheels) Parking Brake: Yes, typically integrated with rear braking system. Passive Features Lighting: Headlight, Taillight/Brake Light Handlebars: Wide handlebars for control and stability. 💡 Technology Features Infotainment Infotainment Features: N/A (Basic utility vehicle of its era; no advanced infotainment) Driver Assistance Assistance Features: N/A (No electronic driver assistance systems) Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual; typically every 1000-1500 miles or annually. Air Filter Cleaning: Frequent checks recommended, especially in dusty conditions. Manual details interval. Spark Plug Replacement: Refer to manual; typically every 3000-4000 miles or as needed based on condition. Chain Lubrication Adjustment: Regular checks recommended, especially before long rides. Manual provides specifications. Fluid Specifications Engine Oil Type: Yamaha recommends specific grades of Yamalube or equivalent API SE, SF, SG or SH service classification, SAE 10W-30 or 10W-40 (verify exact viscosity and API rating in manual). Engine Oil Capacity: Approximately 1.5-2.0 liters (verify exact capacity in manual). Transmission Oil...