Basic Information Identification Make: Yamaha Product Type: ATV Service Manual Product Name: 1983-1986 Yamaha YTM200 YFM200 YTM225 ATV Service WSM Codes Covered Model Codes: YTM200EK, YTM225DXK, YTM200L, YTM225DXL, YFM200N-S, YTM200N, YTM225DXN, YFM200DXS Introduction Market Position Category: Essential service documentation for Yamaha's early generation of versatile ATVs, catering to recreational and utility users. Competitive Analysis Industry Context: These models were key players in the burgeoning ATV market, competing with offerings from Honda, Suzuki, and Kawasaki. This manual provides crucial OEM-level repair data. Key Features Manual Value: Provides the most accurate and detailed information directly from the manufacturer, enabling owners and technicians to perform proper maintenance and repairs, crucial for preserving the longevity and performance of these vintage ATVs. Manual Details Coverage Areas Vehicles Covered: 1983-1986 Yamaha YTM200 (Tri-Moto, Yamahauler), YTM225 (Tri-Moto), YFM200 (Moto-4) Page Count Estimated Pages: Likely 300-500+ pages (typical for a comprehensive WSM of this era) Manual Type Type: Workshop Service Manual (WSM) / Repair Manual Language Language: English Format Format: Printed Document (typical for original manuals) Manual Coverage Systems Covered All Systems: Engine, Clutch, Transmission, Fuel System, Exhaust System, Electrical System (Charging, Ignition, Starting, Lighting), Front Suspension, Steering, Rear Suspension, Final Drive, Brakes, Troubleshooting, Lubrication, Maintenance, Tune-Up Procedures Included Maintenance Repair: Routine checks, service intervals, lubrication, oil changes, filter service, brake adjustments, clutch adjustments, valve clearance adjustment, ignition timing, engine disassembly/assembly, carburetor service, electrical component testing/replacement, suspension component service, brake system repair, drive chain/shaft maintenance Technical Depth Diagnostic Repair Level: Comprehensive diagnostic procedures, detailed repair instructions, component-level troubleshooting, complete engine and transmission rebuild guidance, electrical system diagnostics Manual Specifications File Format Format Details: Original factory printed manual. Digital reproductions (PDF) may vary in quality and searchability. Print Quality Quality: Typically high-quality paper and printing for factory manuals of this era, designed for workshop use. Binding Type Binding: Likely a staple-bound or perfect-bound format for workshop manuals, allowing for lay-flat use. Paper Type Paper: Durable, possibly semi-gloss paper stock to withstand workshop environments. Engine Specifications Primary Engine Engine Type: Air-cooled, 4-stroke, SOHC (Single Overhead Camshaft) gasoline engines. Displacement Engine Displacement: Approximately 196cc for YTM200/YFM200 models, and approximately 222cc for YTM225 models. Exact specifications are detailed within the manual. Performance Horsepower Torque: Horsepower and torque figures varied slightly by model and year, typically in the range of 10-15 HP. Specific performance charts and data are available in the manual. Fuel System Carburetion: Carburetor fed, likely with a Mikuni carburetor for each model. Manual covers carburetor identification, disassembly, cleaning, adjustment, and troubleshooting. Transmission Standard Transmission Type: Manual transmission with constant mesh gears and a wet multi-plate clutch. Many models featured a multi-range gearbox (e.g., Hi/Lo) and reverse gear. Optional Gearbox Features: Reverse gear capability on several models. Specific gear ratios and operation are detailed in Chapter Five. Features Clutch Operation: Cable-actuated wet multi-plate clutch. Manual details clutch lever adjustment, clutch plate service, and inspection. Dimensions Exterior Wheelbase Length: Specific dimensions (wheelbase, length, width, height) vary by model but are provided in detail in the manual's specifications section, crucial for component identification and service. Weights Dry Weight: Dry weights typically ranged from approximately 300 to 370 lbs (136 to 168 kg) depending on the model. Exact dry weights are usually listed in the manual's general information or specifications chapter. Safety Features Ratings Atv Safety Guidelines: The manual emphasizes safety precautions for operation and maintenance, including the use of personal protective equipment (PPE) and safe working practices. No formal crash ratings apply to ATVs in the same way as passenger cars. Active Features Operational Safety: Includes guidance on brake system maintenance, suspension integrity, and steering system checks, all critical for safe operation. Decompression lever adjustment for easier starting is also covered. Passive Features Vehicle Design: While not featuring modern passive safety systems, the manual guides on maintaining the integrity of the frame, bodywork, and controls essential for rider safety during use. Technology Features Infotainment Features: Not applicable. These ATVs from the mid-1980s do not feature modern infotainment systems. Driver Assistance Features: Not applicable. Driver assistance features were not part of ATV design in this era. Connectivity Features: Not applicable. Connectivity features are not present on these models. Maintenance Service Intervals Scheduled Maintenance: Detailed service intervals for oil changes, filter replacements, lubrication points, drive chain adjustment, brake checks, and valve clearance checks are provided in Chapter Three. Intervals are typically based on mileage or operating hours. Fluid Specifications Oil Types Capacities: Manual specifies required engine oil type (e.g., Yamalube or equivalent API SG/SH or higher), viscosity (e.g., 10W-30, 10W-40), and capacities for engine, final drive, and front forks. Also covers brake fluid type. Known Issues Common Wear Failures: While not explicitly listed as 'known issues,' the manual's troubleshooting section (Chapter Two) and detailed component service instructions implicitly address common wear items such as carburetor jets clogging, clutch wear, fork seal leaks, and potential electrical...