Basic Information Identification Make: Yamaha Model: DT125R Year: 1987, 1988 Engine Variants: All Models/Engines/Trim/Transmissions Types Codes Vin Structure: Not specified in product info, but typically 17 characters for motorcycles Engine Code: Likely a 125cc 2-stroke engine, specific code not detailed Introduction Market Position Target Audience: Yamaha DT125R owners, DIY mechanics, independent repair shops Value Proposition: Comprehensive, factory-level information for efficient and accurate maintenance and repair, saving time and money. Competitive Analysis Comparison To Other Manuals: Same manual used by local service/repair shops, potentially factory original, superior to generic third-party guides. Key Features Accuracy Completeness: Complete and intact, no missing/corrupt parts, original manufacturer content Ease Of Use: Hundreds of diagrams, detailed information, step-by-step instructions, numbered table of contents, figure number callouts Accessibility: Instant PDF download, accessible on computers, printable sections Manual Details Coverage Areas Primary Coverage: Service, Maintenance, Troubleshooting Specific Sections: General Information, Fuel System, Cooling System, Engine Top End, Clutch, Engine Lubrication System, Engine Removal/Installation, Crankshaft/Transmission, Wheels/Tires, Final Drive, Brakes, Suspension, Steering, Frame, Electrical System, Appendix Page Count Estimated Page Count: Hundreds of pages (as per description) Manual Type Type: Workshop Repair Service Manual Language Language: English Format File Format: PDF Digital Delivery: Instant Download Delivery Method: Instant Download Manual Coverage Systems Covered Powertrain: Engine top end, Clutch, Engine lubrication, Crankshaft, Transmission, Fuel system, Cooling system, Final drive Chassis: Wheels, Tires, Brakes, Suspension, Steering, Frame Electrical: Full Electrical System coverage, Wiring Diagrams Procedures Included Maintenance: Routine maintenance, fluid changes, component checks Repair: Detailed step-by-step repair procedures for all covered systems Troubleshooting: Diagnostic procedures and solutions for common issues Assembly Disassembly: Component disassembly and reassembly instructions Technical Depth Depth: Professional Technician Level Diagnostic Capabilities: Comprehensive diagnostic information and troubleshooting guidance Rebuild Procedures: Detailed rebuild procedures for engine and transmission components Illustrations Diagrams: Hundreds of diagrams, drawings, and photos for detailed visual guidance Manual Specifications File Format File Type: PDF Searchable: Likely searchable PDF content, although not explicitly stated Print Quality Printability: Full Printable Zoom Functionality: Zoom IN/OUT Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) Requirements Software Requirements: Adobe PDF Reader, WinZip Operating System Compatibility: All Versions of Windows & Mac Engine Specifications Primary Engine Engine Type: 2-Stroke Displacement: Approximately 124cc (DT125R) Configuration: Single Cylinder Performance Horsepower: Typically around 15-20 HP (exact figures vary by market and tuning) Torque: Specific torque figures not provided in product info Fuel System Carburetion: Carburetor (specific model not detailed, likely Mikuni VM series) Fuel Type: Unleaded gasoline with 2-stroke oil mixture (pre-mix or autolube system) Cooling System Cooling Method: Air-cooled Lubrication System Lubrication Type: 2-stroke oil injection or pre-mix Transmission Standard Transmission Type: 6-Speed Constant Mesh Clutch Type: Wet, Multi-disc Features Gear Ratios: Detailed gear ratios are covered within the manual Final Drive Type: Chain Drive Dimensions Exterior Overall Length: Specific dimensions not provided in product info Overall Width: Specific dimensions not provided in product info Overall Height: Specific dimensions not provided in product info Weights Dry Weight: Typically around 105-115 kg (exact figures vary) Wet Weight: Not specified in product info Safety Features Ratings Crash Test Ratings: N/A (Motorcycle, not subject to automotive crash testing standards) Active Features Braking System: Front Disc Brake, Rear Drum Brake (typical for this model) Passive Features Lighting System: Headlight, Taillight, Turn Signals, Brake Light (covered in electrical section) Technology Features Infotainment Infotainment System: N/A (This is a 1980s era motorcycle, no modern infotainment systems) Driver Assistance Rider Aids: N/A (Basic motorcycle, no electronic rider aids) Connectivity Connectivity Features: N/A Maintenance Service Intervals Oil Change Interval: Detailed in the manual, dependent on usage and oil type. Typically every few thousand kilometers for the gearbox oil. Spark Plug Maintenance: Recommended inspection and replacement intervals are specified in the manual. Air Filter Cleaning: Regular cleaning or replacement is crucial for performance, intervals vary based on operating conditions. Fluid Specifications Gearbox Oil Type: Specific API GL-4 or GL-5 gear oil of appropriate viscosity (e.g., 10W-30 or 10W-40) will be detailed in the manual. Coolant Type: N/A (Air-cooled engine) Brake Fluid Type: DOT 3 or DOT 4, depending on the specific brake system components (detailed in manual). Known Issues Common Problems: Carburetor jetting issues, exhaust valve (if equipped) sticking, wear on kickstart mechanism, clutch wear, ignition system components. Common Issues Recommended Fixes: Regular cleaning and tuning of the carburetor, proper lubrication of moving parts, adherence to service intervals for ignition components. Vehicle History Brand Heritage Yamaha Motorcycles: Yamaha has a long-standing reputation for performance and reliability in the motorcycle industry, particularly with their off-road and dual-sport models. Model Evolution Dt Series Legacy: The DT series has a rich history as an iconic dual-sport motorcycle, known for its ruggedness and versatility, evolving from earlier models like the DT1. Production Dt125R Production Era: Produced through the 1980s and into the 1990s, with the 1987-1988 models representing a specific iteration. Awards...