This manual covers the YFM200 Moto-4, a foundational All-Terrain Vehicle (ATV) produced from 1985 to 1989. Designed as a versatile recreational and utility vehicle, the YFM200 is powered by an air-cooled, 196 cc single-cylinder, four-stroke engine paired with an automatic transmission and 2WD drive system. Its robust engineering and balanced performance made it a competitive option in its class during its production era. This first-generation model, encompassing variants like the YFM200N-S and YFM200DX, established Yamaha's presence in the ATV market. This comprehensive factory service manual provides detailed guidance for the maintenance, repair, and troubleshooting of the YFM200 Moto-4. It covers all essential systems, including the engine, drivetrain, chassis, and electrical components, with in-depth procedures for disassembly, reassembly, and diagnostics. Whether you are a DIY enthusiast, home mechanic, or professional technician, this manual offers the necessary information, from scheduled maintenance and fluid specifications to step-by-step repair instructions and troubleshooting flowcharts, ensuring the longevity and optimal performance of your vehicle. 🏷️ Basic Information Identification Make: Yamaha Model: YFM200 Moto-4 Model Designation: YFM200N-S, YFM200DX Codes Chassis Code: YFM200 Generation Generation Identifier: First Generation 👋 Introduction Market Position Category: All-Terrain Vehicle (ATV) Target User: DIY enthusiasts, Home mechanics, Professional Technicians, Workshops Competitive Analysis Competitive Landscape: Competed with other entry-level 200cc ATVs of its era from brands like Honda, Suzuki, and Kawasaki. Key Features Highlight: Designed as a utility and recreational ATV, offering a balance of performance and affordability. Engine Type: Air-cooled, single-cylinder, four-stroke engine. 📋 Manual Details Coverage Areas Model Years Covered: 1985, 1986, 1987, 1988, 1989 Trim Levels Covered: All variants including N-S and DX Page Count Estimated Page Count: Varies, potentially up to 5GB file size Manual Type Type: Factory Service Manual / Repair Manual / Workshop Manual Language Language: English Format Delivery Format: Digital Download (PDF, ZIP, RAR, or EXE) 📖 Manual Coverage Systems Covered Engine Systems: Engine Overhaul, Cooling System, Fuel Injection System, Carburetor (if applicable to specific sub-models), Lubrication System Drivetrain Systems: Drive Train, Transmission, Clutch, Final Drive, Suspension Components Chassis Systems: Chassis, Frame, Steering, Braking System (Front and Rear), Wheels, Tires Electrical Systems: Electrical System, Ignition System, Lighting System, Battery, Charging System, Wiring Diagrams Procedures Included Maintenance: Periodic Checks & Adjustments, Scheduled Maintenance, Lubrication Points Repair: Component Disassembly, Reassembly, Component Replacement, Rebuilding Procedures Troubleshooting: Problem Diagnosis, Symptom Analysis, Step-by-Step Troubleshooting Guides Technical Depth Depth: Comprehensive (from basic maintenance to complete engine rebuilds and diagnostics) Diagnostics: Advanced diagnostic procedures, troubleshooting flowcharts Illustrations: Illustrated with clear step-by-step instructions, exploded views, zoomable illustrations 📊 Manual Specifications File Format Primary Format: PDF Compression Formats: ZIP, RAR (may require unzipping software like WinZip or WinRAR) Executab Format: EXE (possible for self-extracting archives or installers) Print Quality Printability: Printable (no restrictions on printing) Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, SOHC, air-cooled Displacement: 196 cc (approximate) Bore X Stroke: 67.0 mm x 55.7 mm (typical for this engine family) Compression Ratio: 9.0:1 (typical) Performance Horsepower: Approximately 15-17 HP (estimated) Torque: Not readily available in standard documentation, but sufficient for its class. Fuel System Carburetor Type: Mikuni VM Series (e.g., VM26SS or similar) Fuel Capacity: Approximately 2.7 US gallons (10.2 L) Cooling System Cooling Method: Forced air cooling Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) 🔧 Transmission Standard Transmission Type: Automatic (Torque Converter with CVT elements) Drive System: 2WD (Rear Wheel Drive) Features Gearbox: 2-speed forward with Reverse (Hi/Lo range often present) 📐 Dimensions Exterior Overall Length: Approximately 70.9 inches (1800 mm) Overall Width: Approximately 41.3 inches (1050 mm) Overall Height: Approximately 41.5 inches (1055 mm) Weights Dry Weight: Approximately 357 lbs (162 kg) Ground Clearance: Approximately 4.3 inches (110 mm) Wheelbase Wheelbase: Approximately 45.3 inches (1150 mm) Tires Front Tire Size: AT18 x 7-8 (common size) Rear Tire Size: AT20 x 10-9 (common size) 🛡️ Safety Features Ratings Safety Standards: Designed to meet applicable ANSI/SVIA standards for recreational ATVs. Active Features Braking System: Drum brakes front and rear, parking brake. Passive Features Lighting: Headlight, taillight, brake light. Handlebars: ATV-style handlebars with thumb throttle and hand brake levers. 💡 Technology Features Infotainment Features: Basic functionality, no advanced infotainment systems typical of modern vehicles. Driver Assistance Features: No electronic driver assistance features. Connectivity Features: No connectivity features. 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual, typically every 6 months or 1000 miles (for motorcycles, ATVs may vary; consult manual) Air Filter Cleaning: Regularly check and clean/replace as needed, especially in dusty conditions. Spark Plug Replacement: Refer to manual, typically every 3000-6000 miles or annually. Fluid Specifications Engine Oil Type: Yamalube or equivalent SAE 10W-40 API SG or higher motorcycle oil. Engine Oil Capacity: Approximately 1.7 US quarts (1.6 L) with filter change. Gearbox Oil Type: Yamalube Gear Oil or equivalent. Brake Fluid Type: DOT 3 or DOT 4 brake...