This manual covers the 1981 Kawasaki KE125, a versatile two-stroke dual-sport motorcycle renowned for its reliability and off-road capabilities. Building on Kawasaki's legacy in performance-oriented machines, the KE125 offers a balance of trail-riding prowess and on-road usability. Its air-cooled, single-cylinder engine, typically around 124 cc, delivers dependable power for a variety of riding conditions. This iteration of the KE series is designed for enthusiasts seeking an accessible and capable off-road or light trail machine, embodying the spirit of adventure that characterized its production era. This comprehensive workshop service repair manual provides detailed instructions for maintaining and repairing the 1981 Kawasaki KE125. It covers a wide range of systems, including the engine's top end, lubrication, crankshaft, and transmission, as well as the fuel system, ignition, drivetrain, chassis, suspension, and electrical components. The manual includes periodic maintenance schedules, inspection guidelines, troubleshooting procedures, and detailed repair steps for components like the carburetor, clutch, brakes, and suspension. This resource is essential for DIY owners and professional technicians aiming to ensure the optimal performance and longevity of their KE125 motorcycle. 🏷️ Basic Information Identification Make: Kawasaki Model: KE125 Year: 1981 Product Type: Workshop Service Repair Manual 👋 Introduction Market Position Target Audience: DIY motorcycle enthusiasts, independent repair shops, and Kawasaki KE125 owners seeking to perform their own maintenance and repairs. Competitive Analysis Value Proposition: Provides comprehensive, dealership-level repair information for self-sufficiency, reducing reliance on professional services for common tasks. Key Features Self Repair Capability: Empowers owners to undertake repairs themselves, fostering a deeper understanding of their motorcycle. Search Functionality: PDF format allows for rapid searching of specific topics or procedures. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive repair and maintenance for the 1981 Kawasaki KE125 Additional Coverage: Troubleshooting and diagnostics Page Count Estimated Pages: Varies by specific manual edition, typically 200-400 pages for this era of motorcycle service manual Manual Type Type: Workshop Service Repair Manual Manual Purpose: Facilitates DIY repairs and maintenance, providing detailed step-by-step instructions. Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Internal: Top End, Lubrication System, Crankshaft, Transmission Fuel And Ignition: Fuel System (carburetor, fuel tank, petcock), Cooling System (if applicable, though KE125 is air-cooled) Drivetrain: Clutch, Final Drive (chain, sprockets) Chassis And Suspension: Wheels, Tires, Brakes, Suspension (front forks, rear shock(s)), Steering Electrical: Electrical System (lighting, ignition, wiring diagrams) Frame: Frame inspection and repair Procedures Included Maintenance: Periodic Maintenance Schedule, Inspections Repair: Engine Rebuild, Transmission Overhaul, Suspension Servicing, Brake Overhauls, Electrical Component Repair Troubleshooting: Diagnostic procedures for common and uncommon issues Installation: Engine Removal/Installation General Information: Includes overview of the motorcycle, safety precautions, and general operating procedures. Appendix: Often contains valuable supplemental information like torque specifications, wiring diagrams, and specifications charts. Technical Depth Depth: Comprehensive, covering everything from routine checks to complete engine disassembly and rebuilds. Diagnostic Capability: Detailed troubleshooting guides, symptom-based diagnostics. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content within the PDF for quick information retrieval. Compatibility: Compatible with Windows (Win) and macOS (Max) operating systems. Document Quality: PDF format generally allows for clear display and printing of diagrams and text, assuming the source document was of good quality. Print Quality Printability: Designed for printing, though actual quality depends on the source document and printer capabilities. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder Displacement: 124 cc (Cubic Centimeters) Bore X Stroke: 53.0 mm x 58.0 mm (typical for this model, confirm with manual) Cooling Method: Air-cooled Performance Horsepower: Approx. 12-15 HP (at RPM, confirm with manual) Torque: Not typically specified in basic specs, but detailed in manual Fuel System Carburetor Type: Mikuni VM series (e.g., VM26SS, confirm with manual) Fuel Delivery: Carburetor with gravity feed Fuel Type: Unleaded gasoline, typically with a 2-stroke oil mix (e.g., 20:1 or 32:1, confirm with manual) Engine Lubrication Lubrication System: Pre-mix oil in fuel, Crankcase lubrication Engine Internal Piston Rings: Details on inspection, replacement, and gap measurement are provided. Cylinder Honing: Procedures for cylinder inspection, bore measurement, and honing for piston ring seating are covered. 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Clutch Type: Wet multi-plate Features Gear Ratios: Detailed in manual, crucial for performance tuning and diagnosis. Transmission Fluid: Dedicated transmission oil, capacity and type specified in manual (e.g., SAE 80W or 10W-30 motorcycle gear oil, confirm with manual). 📐 Dimensions Exterior Wheelbase: Approx. 1330 mm (52.4 inches) (confirm with manual) Length: Approx. 2015 mm (79.3 inches) (confirm with manual) Weights Dry Weight: Approx. 104 kg (229 lbs) (confirm with manual) 🛡️ Safety Features Ratings Safety Standards: N/A for this era and type of manual; focus is on mechanical safety and operational integrity. Active Features Braking System Front: Drum brake (confirm with manual) Braking System Rear: Drum brake (confirm with manual) Passive Features Lighting: Headlight,...