This manual covers the Yamaha YFM200 Moto-4 and YFM225 Moto-4 all-terrain vehicles, primarily produced during the mid-to-late 1980s. These ATVs, powered by air-cooled, single-cylinder engines of approximately 196cc and 222cc respectively, offered reliable performance for recreational and utility purposes. Known for their rugged steel frames and robust engineering, the Moto-4 series represented Yamaha's strong legacy in ATV manufacturing, providing durable and functional machines for their era. This comprehensive service and repair manual provides detailed guidance for maintaining and repairing the Yamaha YFM200 and YFM225 Moto-4 ATVs. It covers all essential systems, including the engine, transmission, fuel system, electrical components, brakes, suspension, and chassis. The manual includes step-by-step procedures for routine maintenance, troubleshooting common issues, component disassembly and reassembly, and various adjustment procedures. With its in-depth technical information, diagnostic flowcharts, and helpful illustrations, this manual is an indispensable resource for owners and technicians alike. 🏷️ Basic Information Identification Make: Yamaha Model: YFM200 Moto-4 / YFM225 Moto-4 Codes Model Code Yfm200: Likely variations exist, but common designations include models within the 'Moto-4' series. Model Code Yfm225: Likely variations exist, but common designations include models within the 'Moto-4' series. 👋 Introduction Market Position Target Audience: Yamaha Moto-4 owners, DIY mechanics, and professional ATV repair shops. Competitive Analysis Value Proposition: Provides essential technical data and repair guidance at a significantly lower cost and with greater accessibility than original manufacturer manuals. Key Features Digital Access: Instant download offers immediate access, eliminating shipping delays and costs. Completeness Of Information: Aims to provide all necessary technical details for maintenance and repair. 📋 Manual Details Coverage Areas Primary Coverage: Yamaha YFM200 Moto-4 and YFM225 Moto-4 ATVs Page Count Estimated Pages: While not explicitly stated, comprehensive service manuals for this era of ATVs typically range from 300-600 pages. Manual Type Type: Service and Repair Manual Language Language: English (implied by typical market availability for this product) Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Detailed coverage including engine disassembly, assembly, inspection, lubrication, and tuning. Transmission: Includes clutch, gearbox, drive chains, and related components. Fuel System: Carburetor identification, adjustment, cleaning, and fuel tank/line maintenance. Electrical System: Ignition system, lighting, battery, charging system, and starter motor. Brakes: Hydraulic brake system inspection, service, and component replacement. Suspension: Front and rear suspension systems, shock absorbers, and linkage maintenance. Steering: Steering mechanism, tie rods, and handlebar assembly. Chassis And Bodywork: Frame inspection, body panel removal/installation, and seat maintenance. Wheels And Tires: Tire inspection, pressure, and wheel hub servicing. Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, spark plug servicing, and air filter cleaning/replacement. Troubleshooting: Diagnostic procedures for common issues, starting problems, engine performance, and electrical faults. Disassembly And Assembly: Step-by-step instructions for major component removal and reinstallation. Rebuilds: Detailed procedures for engine and transmission rebuilding. Adjustment Procedures: Carburetor synchronization, valve clearance adjustment, and brake lever adjustment. Technical Depth Depth Of Information: Comprehensive, covering both routine maintenance and in-depth mechanical repairs suitable for home mechanics and professional technicians. Diagnostic Capabilities: Detailed diagnostic flowcharts and explanations for identifying and rectifying problems. Diagrams And Illustrations: Includes exploded views, wiring diagrams, and procedural illustrations. 📊 Manual Specifications File Format Format Details: PDF is a highly portable and widely compatible digital format, allowing for easy viewing and printing. Print Quality Printability: As a digital PDF, print quality depends on the user's printer, but the inherent quality of the scanned or created document dictates clarity. Binding Type Binding: N/A (Digital download, not a physical book) Paper Type Paper Type: N/A (Digital download, not a physical book) ⚙️ Engine Specifications Primary Engine Engine Type Yfm200: Four-stroke, SOHC, air-cooled, single-cylinder Displacement Yfm200: Approximately 196cc Engine Type Yfm225: Four-stroke, SOHC, air-cooled, single-cylinder Displacement Yfm225: Approximately 222cc Performance Horsepower Estimate: Specific figures vary by model year and tuning, but typically in the range of 15-20 HP. Torque Estimate: Specific figures vary by model year and tuning, but typically in the range of 12-15 lb-ft. Fuel System Carburetor Type: Likely Mikuni VM or similar constant-velocity carburetor. Fuel Type: Unleaded gasoline, typically 87 octane. 🔧 Transmission Standard Transmission Type: Automatic with torque converter and shaft drive (some models may have chain drive). Features Gear Reduction: Integral to the torque converter system for automatic gear changes. Drive Type: 2WD (Rear Wheel Drive) 📐 Dimensions Exterior Wheelbase Approx: Varies by model year, but generally around 45-47 inches. Weights Dry Weight Approx: Varies by model year, but generally around 350-400 lbs. 🛡️ Safety Features Ratings Atv Safety Standards: Adheres to relevant industry safety standards for ATVs of its era. Active Features Braking System: Hydraulic disc front brakes and drum rear brake (or dual disc depending on model/year). Passive Features Frame Construction: Robust steel frame designed for off-road conditions. 💡 Technology Features Infotainment Infotainment System: Basic dashboard indicators (speedometer, neutral light, oil pressure light, high beam indicator). Driver Assistance Driver Assistance Features: N/A (No advanced electronic...