🏷️ Basic Information Identification Make: Yamaha Model: SR250 Model Variant: SR250G Years Covered: 1980, 1981, 1982, 1983 Codes Engine Code Variant: SR250G 👋 Introduction Market Position Target Audience: Yamaha SR250 owners and independent mechanics Competitive Analysis Alternative Formats: Compares favorably to physical manuals, offering convenience and cost-effectiveness Key Features Completeness: Complete and intact, no missing or corrupt parts/pages Accuracy: Original Yamaha workshop manual, factory-written Usability: Detailed diagrams, illustrations, photos, numbered instructions, troubleshooting guides Benefit: Saves time and money on repairs and maintenance Diagnostic Tools: Provides comprehensive diagnostic information used by professionals 📋 Manual Details Coverage Areas General Information: True Fuel System: True Cooling System: True Engine Top End: True Clutch: True Engine Lubrication System: True Engine Removal Installation: True Crankshaft Transmission: True Wheels Tires: True Final Drive: True Brakes: True Suspension: True Steering: True Frame: True Electrical System: True Appendix: True Page Count Estimated Page Count: Hundreds of pages Manual Type Type: Workshop Repair Service Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Digital Advantage: Electronic format allows for printing specific sections, protecting the original manual from dirt/oil. 📖 Manual Coverage Systems Covered Engine: Complete overhaul, top end, lubrication, removal/installation, crankshaft, transmission Fuel System: Carburetor operation, adjustment, and overhaul Cooling System: Air cooling system components and maintenance Drivetrain: Clutch, transmission, final drive (chain drive maintenance) Chassis: Wheels, tires, brakes, suspension, steering, frame Electrical: Wiring diagrams, ignition system, lighting, charging system, troubleshooting Procedures Included Maintenance: Routine service, lubrication, adjustments, inspections Repair: Step-by-step repair procedures for all covered systems Troubleshooting: Diagnostic procedures for common problems, electrical troubleshooting Disassembly Assembly: Detailed procedures for component removal and reinstallation Cleaning Reinstalling: Procedures for cleaning and reassembling components Electrical Diagnostics: Detailed diagnosis and repair of electrical system problems Technical Depth Depth: Professional-level diagnostics, repair, and maintenance Data Quality: Original manufacturer data, used by local service/repair shops Diagrams Illustrations: Hundreds of pages of diagrams and detailed information Wiring Diagrams: Comprehensive wiring diagrams included 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Full Printable Zoom Capability: Zoom IN/OUT enabled Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) Requirements Software Requirements: Adobe PDF Reader, WinZip Compatibility: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, single-cylinder, SOHC, 2-valve Displacement: 249 cc (approximately, specific bore/stroke required from manual) Performance Horsepower: Approx. 18-20 HP (exact figures vary by year and market, refer to manual for specifics) Torque: Refer to manual for specific torque figures Fuel System Carburetor Type: Likely a single Mikuni VM carburetor (specific model number in manual) Fuel Delivery: Carburetor 🔧 Transmission Standard Type: 5-speed constant mesh Optional Optional Transmissions: N/A Features Clutch Type: Wet, multi-plate Final Drive Type: Chain drive 📐 Dimensions Weights Dry Weight: Approx. 135-145 kg (refer to manual for exact specifications) 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycle safety ratings are not standardized in the same way as cars; manual covers operational safety) Active Features Braking System: Front disc brake, Rear drum brake (typical configuration) 💡 Technology Features Infotainment Infotainment System: N/A (Classic motorcycle, no electronic infotainment systems) Driver Assistance Driver Assistance Features: N/A (Classic motorcycle, no electronic driver assistance) Connectivity Connectivity Features: N/A (Classic motorcycle) 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific intervals and oil type (typically 3,000-5,000 km or annually) Spark Plug Replacement: Refer to manual for specific intervals and plug type (e.g., NGK DPR8EA-9) Chain Maintenance: Regular cleaning, lubrication, and adjustment required (refer to manual for specifications) Fluid Specifications Engine Oil Type: API SE, SF or SG, SAE 10W-40 or 20W-40 recommended (verify exact specification in manual) Engine Oil Capacity: Refer to manual for exact capacity (typically around 1.4 - 1.8 liters with filter change) Brake Fluid Type: DOT 3 or DOT 4 (verify with manual) Known Issues Common Wear Items: Carburetor jets, clutch plates, brake pads/shoes, fork seals, wheel bearings Electrical Quirks: Age-related deterioration of wiring insulation and connectors can occur. 📚 Vehicle History Brand Heritage Manufacturer Heritage: Yamaha Motor Company is renowned for its motorcycles, musical instruments, and other motorized products. Model Evolution Sr250 Heritage: The SR250 series is a line of versatile, lightweight motorcycles known for their simplicity and reliability. The SR250G represents a specific iteration within this successful model family. Production Production Period: 1980-1983 (for the specific SR250G variant covered by this manual)