🏷️ Basic Information Identification Make: Yamaha Model: XS650H / XS650SH Year: 1981 Type: Motorcycle Codes Chassis Code Xs650H: 2H7 Chassis Code Xs650Sh: 3X1 👋 Introduction Market Position Era: Late 70s / Early 80s Classic Japanese Motorcycle Segment Target Audience: Enthusiasts, Restorers, DIY Mechanics, Owners of the Yamaha XS650 series Competitive Analysis Competitors: Triumph Bonneville, Moto Guzzi V7, Kawasaki KZ650, Honda CB750F Key Selling Points Vehicle: Torquey parallel-twin engine, distinctive styling, robust build quality, strong aftermarket support. Key Features Manual Value Proposition: Provides in-depth, factory-authorized information for maintaining, troubleshooting, and repairing the Yamaha XS650H/SH, crucial for preserving its value and performance. Manual Benefits: Empowers owners to perform complex maintenance and repairs, reducing reliance on costly dealer services and enhancing understanding of the machine. 📋 Manual Details Coverage Areas Engine: Full Engine Overhaul, Carburetor Tuning, Ignition System Transmission: Gearbox Disassembly/Reassembly, Clutch Operation, Final Drive Chassis: Frame, Suspension (Front & Rear), Steering, Wheels, Tires Electrical: Wiring Diagrams, Lighting, Ignition, Charging System, Battery Brakes: Front & Rear Brake Systems (Hydraulic & Mechanical), Disc & Drum Bodywork: Fuel Tank, Seat, Fenders, Handlebars, Controls Troubleshooting: Diagnostic Procedures, Common Faults & Solutions Page Count Estimated Pages: Hundreds of pages (exact number not specified but indicative of comprehensive coverage) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: 2X 650cc Parallel-Twin, Air-Cooled, SOHC, 4-Stroke; Carburetor Systems (Mikuni VM34); Ignition (CDI); Lubrication System; Cooling System (Air); Valve Train Transmission Systems: 5-Speed Constant Mesh Sequential Gearbox; Multi-Plate Wet Clutch; Chain Drive Final Drive Chassis Systems: Steel Tube Double Cradle Frame; Telescopic Front Forks (35mm stanchions); Rear Swingarm with Dual Shock Absorbers; Spoked Wheels; Drum & Disc Brakes Electrical Systems: 12V Electrical System; Alternator; Battery (YB10L-A2); Headlight, Taillight, Turn Signals; Ignition Coil; Starter Motor; Instruments (Speedometer, Tachometer, Indicators) Procedures Included Routine Maintenance: Oil Changes, Filter Replacement, Chain Lubrication & Adjustment, Spark Plug Service, Air Filter Cleaning/Replacement, Brake Adjustment, Tire Pressure Checks Engine Repair: Top End Rebuild (Cylinder Head, Piston, Rings); Bottom End Rebuild (Crankshaft, Bearings, Seals); Camshaft Removal/Installation; Carburetor Rebuild & Synchronization; Valve Adjustment Transmission Repair: Gearbox Disassembly, Reassembly, Bearing Replacement; Clutch Assembly Inspection, Replacement Electrical Diagnostics: Wiring Diagram Interpretation, Troubleshooting Electrical Faults, Charging System Testing, Ignition Timing Verification Brake Service: Brake Pad/Shoe Replacement, Disc/Drum Inspection, Hydraulic System Bleeding, Caliper/Cylinder Overhaul Suspension Service: Fork Seal Replacement, Fork Oil Change, Rear Shock Absorber Servicing/Replacement Troubleshooting Guides: Step-by-step diagnostic flowcharts for common problems (e.g., starting issues, poor performance, electrical failures) Technical Depth Depth: Comprehensive: Covers routine maintenance, intermediate repairs, and complete engine/chassis overhauls. Suitable for experienced DIY mechanics and professional technicians. Diagnostic Capability: High: Includes detailed troubleshooting sections with specific symptom-to-cause mappings and repair procedures. Rebuild Capability: Full: Provides instructions for complete disassembly and reassembly of major mechanical and electrical components. 📊 Manual Specifications File Format Format: PDF (Portable Document Format) Print Quality Quality: High Resolution, Scan Quality (assumed for factory manual, enables clear printing) Binding Type Digital: N/A (Digital Download) Paper Type Digital: N/A (Digital Download - printable pages) Searchability Text Search: Searchable Text (standard for most factory PDF manuals) Interactivity Hyperlinks: Likely includes internal hyperlinks for navigation (common in modern PDFs) ⚙️ Engine Specifications Primary Engine Engine Type: Parallel-twin, Four-stroke, Air-cooled, OHC Displacement: 653 cc Bore X Stroke: 75 mm x 74 mm Compression Ratio: 8.8:1 Valve Actuation: SOHC (Single Overhead Camshaft), 2 valves per cylinder Performance Horsepower: Approx. 50 HP @ 6200 RPM (at crankshaft, for H/SH models) Torque: Approx. 59 Nm (43.5 lb-ft) @ 4500 RPM Fuel System Carburetors: 2 x Mikuni VM34-12 (or similar BST type on later models - manual will cover specifics) Fuel Type: Unleaded gasoline (minimum 91 octane recommended for modern fuel compatibility) Ignition System Type: CDI (Capacitor Discharge Ignition) with Electronic Advance Lubrication Type: Wet Sump Oil Capacity: Approx. 2.7 Liters (with filter change) Oil Spec Recommended Oil: Yamalube 4-stroke motorcycle oil, or equivalent SAE 20W-40 or 10W-40 (API SG or higher) 🔧 Transmission Standard Type: 5-speed constant mesh sequential transmission Gear Ratios: Details available in manual (e.g., 1st: 2.833, 2nd: 1.800, 3rd: 1.310, 4th: 1.050, 5th: 0.875 - typical ratios) Clutch Type: Wet, multi-plate Actuation: Cable-operated, handlebar lever Final Drive Type: Chain drive Gear Ratio Final: Typical 3.000 (e.g., 36/12 tooth sprockets) Fluid Spec Transmission Oil Type: Yamalube SAE 80W motorcycle gear oil, or equivalent API GL-4 📐 Dimensions Exterior Overall Length: Approx. 2,220 mm (87.4 in) Overall Width: Approx. 800 mm (31.5 in) Overall Height: Approx. 1,230 mm (48.4 in) Wheelbase: Approx. 1,465 mm (57.7 in) Weights Dry Weight: Approx. 190 kg (419 lbs) Wet Weight: Approx. 207 kg (456 lbs) (fully fueled, ready to ride) Gross Vehicle Weight Rating: Not typically specified for motorcycles, but refer to manual for load limits. Tires Wheels Front Tire: 3.50-18 4PR Rear Tire: 4.00-18 4PR Wheelbase Type: Spoked wheels, 18-inch diameter front and...