This manual covers the motorcycle, produced from 1980 to 1983. The SR250 is celebrated for its classic styling, reliable single-cylinder air-cooled engine, and pure motorcycling experience. Known for its simplicity and ease of maintenance, this model embodies a heritage of producing durable and enjoyable motorcycles. Its design emphasizes a minimalist aesthetic and a focus on rider engagement, making it a popular choice for both commuting and recreational riding. This comprehensive workshop service and repair manual provides detailed information for maintaining and repairing your SR250G. It covers essential areas including engine overhaul, transmission, electrical systems, chassis, brakes, and fuel systems. The manual includes step-by-step repair instructions, diagnostic guides for troubleshooting common issues, periodic maintenance schedules, and detailed technical specifications. With its thorough coverage, this manual is an indispensable resource for professional technicians and owners alike seeking to preserve the performance and longevity of their SR250G. 🏷️ Basic Information Identification Make: Yamaha Model: SR250 Model Variant: SR250G Production Years Covered: 1980, 1981, 1982, 1983 Codes Model Code Prefix: SR250G 👋 Introduction Market Position Target Audience: Professional technicians, DIY mechanics, Yamaha SR250 owners Competitive Analysis Value Proposition: Provides comprehensive, manufacturer-approved repair and maintenance information, saving on labor costs. Key Features Accessibility: Instant download, printable sections for workshop use. Completeness: Covers routine maintenance to complete engine overhauls, including wiring diagrams. 📋 Manual Details Coverage Areas Primary Coverage: Workshop Service, Repair, Maintenance, Troubleshooting, Overhaul Page Count Estimated Pages: Hundreds (specific count not provided, typical for comprehensive workshop manuals) Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed engine overhaul, tuning, carburetor, ignition system, lubrication system Transmission: Clutch operation, gearbox disassembly and assembly, shifting mechanism Electrical System: Wiring diagrams, lighting system, charging system, ignition system, starter system, battery maintenance Chassis And Suspension: Front fork (telescopic), rear suspension (swingarm, shock absorbers), steering system, frame inspection Brakes: Front disc brake, rear drum brake, hydraulic system, brake pad/shoe replacement Fuel System: Fuel tank, fuel petcock, fuel lines, carburetor (likely Mikuni VM series) Exhaust System: Muffler, exhaust pipe, gasket replacement Procedures Included Maintenance: Periodic maintenance charts, oil changes, filter replacements, chain adjustment, spark plug checks Repair: Step-by-step repair instructions for all major components Troubleshooting: Diagnostic guides for common problems, symptoms, and solutions Overhaul: Complete engine and component overhaul procedures Adjustments: Carburetor tuning, valve clearance adjustment, brake adjustments Wiring Diagrams: Detailed electrical schematics included Technical Depth Depth: Comprehensive, suitable for professional technicians and advanced DIY enthusiasts 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Full Printable Zoom Functionality: Zoom IN/OUT capable Binding Type Binding: Digital (PDF Download) Paper Type Paper Type: Not Applicable (Digital) Delivery Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader, WinRAR Operating System Compatibility: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, Single-cylinder, Air-cooled Displacement: 249 cc (approximately) Bore X Stroke: Typically around 71.0 mm x 62.0 mm (specific values to be confirmed in manual) Compression Ratio: Typically around 9.5:1 (specific values to be confirmed in manual) Performance Horsepower: Approx. 18-20 HP (specific values to be confirmed in manual) Torque: Approx. 18-20 Nm (specific values to be confirmed in manual) Fuel System Carburetor Type: Likely Mikuni VM34SS or similar single carburetor Fuel Type: Unleaded gasoline Lubrication System Oil Type: SAE 10W-40 or 20W-40 motorcycle specific oil (refer to manual for exact specifications) Oil Capacity: Approx. 1.8 - 2.0 Liters (refer to manual for exact specifications) Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) Engine Components Valvetrain: SOHC (Single Overhead Camshaft), 2 valves per cylinder Cooling Method: Air-cooled 🔧 Transmission Standard Transmission Type: 5-speed constant mesh Clutch Type: Wet, multi-plate Features Gear Ratios: Specific gear ratios detailed in the manual Fluid Requirements Transmission Oil Type: Yamalube or equivalent motorcycle transmission oil (refer to manual for exact specifications) Transmission Oil Capacity: Refer to manual for exact specification 📐 Dimensions Exterior Length: Refer to manual for exact specification Width: Refer to manual for exact specification Height: Refer to manual for exact specification Weights Dry Weight: Approx. 147 kg (refer to manual for exact specification) Wet Weight: Refer to manual for exact specification Wheels And Tires Front Tire Size: Typically 3.00-18 4PR or similar Rear Tire Size: Typically 110/90-18 M/C 61S or similar Front Wheel: Spoked wheel Rear Wheel: Spoked wheel 🛡️ Safety Features Ratings Crash Test Ratings: Not applicable to vintage motorcycles in the modern sense. Active Features Braking System: Front disc brake, Rear drum brake Passive Features Lighting: Headlight, Taillight, Turn Signals 💡 Technology Features Infotainment Infotainment System: Basic analog instrumentation (speedometer, tachometer, odometer, indicator lights). Driver Assistance Driver Assistance Features: None. Connectivity Connectivity Options: None. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000 km or 6 months (refer to manual for precise interval) Spark Plug Replacement: Refer to manual for recommended interval Valve Clearance...