The Big Wheel 200, produced from 1985 to 1989, is a unique recreational off-road vehicle renowned for its distinctive fat tire design, offering superior traction and flotation across challenging terrains like sand, mud, and snow. This model embodies a commitment to engineering quality and reliability, featuring a robust air-cooled, four-stroke engine and a durable drivetrain. Its simple, yet effective construction prioritizes off-road performance, making it a capable and enjoyable machine for enthusiasts seeking a distinctive riding experience. This comprehensive service manual covers all essential aspects of the Big Wheel BW200N, including detailed workshop procedures for maintenance, repair, and troubleshooting across its engine, transmission, drivetrain, suspension, brakes, electrical systems, and frame. With 217 pages of English content, it provides owners and technicians with the necessary technical specifications, torque values, fluid requirements, and step-by-step instructions to ensure the vehicle remains in optimal condition. The manual is designed to facilitate efficient diagnostics and repairs, covering everything from routine servicing to complete component overhauls. 🏷️ Basic Information Identification Make: Yamaha Model: Big Wheel 200 Model Designation: BW200N Production Years Covered: 1985-1989 Codes Chassis Code Range: BW200N 👋 Introduction Market Position Niche: Recreational off-road utility vehicle with unique fat tire design. Competitive Analysis Uniqueness: The Big Wheel BW200 was a unique offering in its time, combining ATV-like stability with motorcycle handling on challenging terrain, popularized by its distinctive wide tires. Key Features Feature 1: Fat tire design for superior traction and flotation on sand, mud, and snow. Feature 2: Robust and reliable Yamaha engine and drivetrain. Feature 3: Simple, durable construction focused on off-road performance. 📋 Manual Details Coverage Areas Primary Coverage: Workshop Service, Repair, Maintenance Page Count Total Pages: 217 Manual Type Type: Service Manual / Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, disassembly, assembly, lubrication, cooling system, fuel system, ignition system, exhaust system. Transmission: Gearbox operation, disassembly, assembly, lubrication, shifting mechanisms. Drivetrain: Final drive, drive chains, sprockets, axle maintenance. Suspension: Front forks, rear shock absorber, swingarm, linkage service and adjustments. Brakes: Hydraulic brake system, caliper service, master cylinder, brake fluid, bleeding procedures, pad replacement. Wheels Tires: Tire inspection, replacement, wheel bearing maintenance, spoke tensioning (if applicable), unique Big Wheel tire service. Electrical: Wiring diagrams, lighting system, ignition system, battery maintenance, starter system, charging system, component testing. Frame Bodywork: Frame inspection, seat, fenders, handlebars, controls, general body panel removal and installation. Procedures Included Maintenance: Routine inspections, lubrication points, filter changes, spark plug service, brake adjustments, chain lubrication and adjustment. Troubleshooting: Diagnostic guides for common problems, fault finding charts for engine, electrical, and mechanical issues. Repair: Detailed step-by-step instructions for component disassembly, repair, and reassembly. Specifications: Torque specifications for all fasteners, engine clearances, electrical resistance values, fluid capacities. Technical Depth Depth: Comprehensive coverage from basic maintenance to complete engine and transmission overhauls, including electrical system diagnostics. 📊 Manual Specifications File Format Format: PDF Searchability: Likely text-searchable if created from digital source, otherwise image-based. Print Quality Quality: High-resolution scans suitable for printing, ensuring clarity of diagrams and text. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, four-stroke, single-cylinder Displacement: 195 cc Bore X Stroke: 66.0 mm x 57.0 mm (Approximate) Compression Ratio: 9.5:1 (Typical for period) Performance Horsepower: Approx. 15-18 HP (Estimated, specific figures not readily available for all model years) Torque: Torque curve optimized for low-end grunt, essential for off-road. Fuel System Carburetor Type: Mikuni VM Series (Likely VM26 or similar) Fuel Type: Unleaded gasoline Ignition Ignition System: CDI (Capacitor Discharge Ignition) Cooling Cooling Method: Air-cooled 🔧 Transmission Standard Transmission Type: 5-speed constant mesh with manual clutch Optional Optional Transmission: N/A Features Clutch Type: Wet, multi-disc Final Drive: Chain drive to rear axle 📐 Dimensions Exterior Overall Length: Approx. 75-80 inches (Varies slightly by year) Overall Width: Approx. 40-45 inches (Due to wide tires) Overall Height: Approx. 45-50 inches (Varies slightly by year) Weights Dry Weight: Approx. 240-260 lbs (Varies slightly by year) Fuel Capacity: Approx. 2.5 - 3.0 gallons Wheels Tires Front Tire Size: 25 x 12.00-9 (Common size, check manual for specifics) Rear Tire Size: 25 x 12.00-9 (Common size, check manual for specifics) Wheel Base: Approx. 50 inches 🛡️ Safety Features Ratings Atv Safety Standards: Operated under general ATV safety guidelines of the era. Not subject to modern automotive safety ratings. Active Features Braking System: Hydraulic front and rear disc brakes. Passive Features Chassis Design: Sturdy frame designed for off-road stability. 💡 Technology Features Infotainment Infotainment System: None (Basic recreational vehicle). Driver Assistance Assistance Features: None (Basic recreational vehicle). Connectivity Connectivity Features: None (Basic recreational vehicle). 🔧 Maintenance Service Intervals Oil Change Interval: Every 1000-1500 miles or annually, or as specified in the manual. Spark Plug Replacement: Every 3000-5000 miles, or based on condition. Air Filter Cleaning:...