The Yamaha XS650 Special, including the XS650H and XS650SH variants from 1981, represents a significant chapter in Japanese motorcycle design. These models are celebrated for their iconic air-cooled, four-stroke, parallel-twin engines, delivering robust performance and a distinctive character that appealed to riders seeking a classic cruising experience or a foundation for personalization. Known for their robust construction and enduring appeal, the XS650 Special motorcycles have become a favorite in the custom motorcycle community, appreciated for their timeless styling and the potential for unique modifications. This comprehensive Workshop Repair Service Manual provides essential information for the maintenance and repair of your Yamaha XS650 Special. Covering a wide range of systems including the engine, fuel, ignition, transmission, electrical, brakes, and suspension, this manual details everything from routine maintenance procedures like oil changes and adjustments to complete component overhauls and troubleshooting guides. It is designed to assist owners, mechanics, and technicians in keeping their motorcycles in optimal condition, ensuring reliability and performance through clear, step-by-step instructions and vital technical specifications. 🏷️ Basic Information Identification Make: Yamaha Model: XS650 Special Model Variant: XS650H, XS650SH Year: 1981 Codes Chassis Code H: XS650H Chassis Code Sh: XS650SH 👋 Introduction Market Position Description: The Yamaha XS650 series, particularly the Special models, were popular Japanese custom-style motorcycles of their era, known for their torquey parallel-twin engines and classic styling, appealing to riders seeking a more relaxed cruising experience or a platform for customization. Competitive Analysis Competitors: Competed with other Japanese cruisers and standard motorcycles of the late 70s and early 80s, as well as American V-twin offerings. Its parallel-twin configuration offered a distinct character compared to the V-twins. Key Features Features: Iconic parallel-twin engine, distinctive styling, robust construction, and a strong aftermarket support base contributing to its custom potential. 📋 Manual Details Coverage Areas Primary Coverage: Repair and overhaul of Yamaha XS650H and XS650SH models Page Count Page Count: 212 Manual Type Manual Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine assembly, disassembly, tuning, and troubleshooting Fuel System: Carburetor adjustment, cleaning, and repair; fuel tank, lines, and petcock service Ignition System: Ignition timing, coil testing, spark plug service, and points adjustment Transmission Drivetrain: Clutch operation, gearbox disassembly and assembly, final drive maintenance Electrical System: Wiring diagrams, lighting system, battery charging, starter motor, and instrument panel service Brakes: Front and rear brake system maintenance, adjustment, and component replacement Suspension Steering: Front fork service, rear shock absorber maintenance, steering head bearing adjustment Wheels Tires: Wheel bearing maintenance, tire replacement, and spoke tensioning Frame Bodywork: Frame inspection, seat and tank removal/installation, minor bodywork adjustments Procedures Included Routine Maintenance: Oil changes, filter replacement, lubrication points, chain adjustment Troubleshooting: Diagnostic charts for common problems and their solutions Component Overhaul: Detailed instructions for rebuilding major components like the engine and transmission Adjustments: Carburetor synchronization, ignition timing, clutch cable, brake levers Torque Specifications: Essential torque values for critical fasteners Technical Depth Depth: Comprehensive, covering from basic maintenance to complete engine rebuilds and advanced diagnostics 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality Description: High-resolution scans suitable for digital viewing and printing Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Searchability Searchability: Likely text-searchable PDF (depending on original scan quality) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, four-stroke, SOHC, parallel-twin Displacement: 653 cc (39.8 cu in) Bore X Stroke: 75 mm x 74 mm (2.95 in x 2.91 in) Compression Ratio: 8.4:1 Valve Arrangement: SOHC, 2 valves per cylinder Performance Horsepower Approx: 53 hp @ 6,500 rpm (est.) Torque Approx: 52 lb-ft @ 5,000 rpm (est.) Fuel System Carburetor Type: Dual Mikuni VM34SS Fuel Capacity: 13.0 L (3.4 US gal) Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) with dual spark plugs per cylinder Lubrication Oil Capacity With Filter: Approx. 2.5 L (2.6 US qt) Recommended Oil Viscosity: 10W-40 or 20W-50 (refer to manual for specific climate recommendations) Engine Mounts Engine Mounting: Rubber-mounted for vibration isolation 🔧 Transmission Standard Transmission Type: 5-speed constant mesh Clutch Type: Wet, multi-plate Final Drive: Chain drive Features Gear Ratios: Specific ratios detailed within the manual Transmission Oil Type: Yamalube 20W-40 or equivalent motorcycle-specific transmission oil 📐 Dimensions Exterior Length: Approx. 2220 mm (87.4 in) Width: Approx. 830 mm (32.7 in) Height: Approx. 1160 mm (45.7 in) Wheelbase: Approx. 1460 mm (57.5 in) Weights Dry Weight: Approx. 193 kg (425 lbs) Wet Weight: Approx. 208 kg (458 lbs) (est.) Cargo Cargo Capacity: N/A (Motorcycle) 🛡️ Safety Features Ratings Safety Ratings: Not applicable in modern automotive crash test rating systems Active Features Brakes Front: Single Disc Brake Brakes Rear: Drum Brake Passive Features Lighting: Headlight, taillight, brake light, turn signals Instrumentation: Speedometer, tachometer, neutral indicator, high beam indicator, turn signal indicators 💡 Technology Features Infotainment Infotainment System: N/A (Analog...