This manual covers the MOTO 4 series, including models 200, 225, 250, and 350, produced between 1987 and 1995. The MOTO 4 lineup was recognized for its robust construction and versatility, serving as dependable utility all-terrain vehicles for recreational and practical applications. These ATVs are characterized by their durable, air-cooled, 4-stroke, single-cylinder engines, typically featuring SOHC valve trains, and a reliable shaft drive system. With displacements ranging from approximately 175cc to 350cc, they offered a solid balance of power and usability, making them a popular choice in their market segment. This comprehensive Factory Service Repair Workshop Manual in English provides detailed information for maintaining and repairing your MOTO 4. It covers all essential systems, including the engine, transmission, chassis, suspension, brakes, electrical components, and fuel system. Within its hundreds of pages, you will find step-by-step repair instructions, diagnostic procedures, technical specifications, and maintenance schedules. This resource is designed to assist owners, mechanics, and technicians in performing everything from routine servicing and tune-ups to complete overhauls, ensuring the longevity and optimal performance of the vehicle. 🏷️ Basic Information Identification Make: Yamaha Model: MOTO 4 Sub Models: 200, 225, 250, 350 Codes Engine Codes: Covered models include variants with 200cc, 225cc, 250cc, and 350cc engines. Specific engine codes (e.g., 200A, 225C, 250D, 350E) would be detailed within the manual based on specific model year and configuration. 👋 Introduction Market Position Positioning: The Yamaha MOTO 4 series was a popular line of utility ATVs known for their versatility and reliability, catering to recreational riders, farmers, and utility users. This manual serves the owners and technicians maintaining these robust machines. Competitive Analysis Competitors: Competitors during this era included models from Honda (e.g., FourTrax), Suzuki (e.g., QuadRunner), and Kawasaki (e.g., Bayou), all vying for market share in the growing ATV segment. Key Features Manual Benefits: Comprehensive coverage, detailed diagrams, step-by-step instructions, lifetime usability, multi-device compatibility, printable for workshop use. Vehicle Benefits: The MOTO 4 lineup offered durable, air-cooled engines (primarily single-cylinder, 4-stroke), reliable shaft or chain drive, and a comfortable ride for its time, making them workhorses for various tasks. 📋 Manual Details Coverage Areas Vehicle Years: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 Model Variants: Yamaha MOTO 4 200, Yamaha MOTO 4 225, Yamaha MOTO 4 250, Yamaha MOTO 4 350 Page Count Estimated Pages: Hundreds of pages (exact count not specified, but described as comprehensive) Manual Type Type: Factory Service Repair Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine overhauling, diagnostics, tuning, carburetor rebuild, ignition system, cooling system (if applicable), lubrication system. Transmission: Gearbox inspection, repair, clutch service, drive shaft maintenance, differential service. Chassis Suspension: Front and rear suspension servicing, shock absorber replacement, steering system maintenance, wheel bearing service. Brakes: Brake system inspection, hydraulic system bleeding, brake pad/shoe replacement, drum/disc servicing. Electrical: Wiring diagrams, lighting system, starting and charging system (stator, rectifier, battery), ignition system components, troubleshooting electrical faults. Fuel System: Fuel tank inspection, fuel lines, fuel pump (if applicable), carburetor cleaning and adjustment, fuel filter replacement. Body Frame: Body panel removal and installation, fender maintenance, seat service, frame inspection. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, lubrication, spark plug replacement, valve adjustments, battery care. Troubleshooting: Comprehensive diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides. Repair: Step-by-step repair instructions for all major components and systems, including complete engine and transmission rebuilds. Technical Adjustments: Carburetor tuning, ignition timing adjustments, cable adjustments (throttle, brake), suspension adjustments. Technical Depth Depth: Professional-level, covering everything from basic servicing to complete engine and transmission overhauls. Includes detailed exploded diagrams and clear, step-by-step instructions. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchability: Likely text-searchable PDF, allowing users to quickly find specific terms and procedures. Print Quality Printable: Yes, individual pages or the entire manual can be printed. Binding Type Binding: Digital download, no physical binding. Paper Type Paper Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Configuration: Air-cooled, 4-stroke, single-cylinder (typical for this era and model range) Displacement Variants: Approximately 175cc (for 200), 225cc, 250cc, and 350cc. Exact displacements for each model variant would be specified in the manual. Valve Train: SOHC (Single Overhead Camshaft) with 2 valves per cylinder is common for Yamaha engines of this period. Performance Horsepower Range: Estimated range from 15-30 HP depending on displacement and specific model tuning. Precise figures are in the manual. Torque: Torque figures would vary significantly by engine size; manual would provide specifics for each model. Fuel System Carburetion: Mikuni or Keihin single-barrel carburetors were standard. Manual will detail specific model and size. Fuel Type: Unleaded gasoline Lubrication Oil Type: Yamaha recommends specific SAE viscosity grades (e.g., 10W-40, 20W-40) and API service classification for 4-stroke engines. Manual will specify exact requirements. Oil Capacity: Specific oil capacity for engine oil and oil...