The Mongoose KXR 90/50, model LA20AB, is a recreational All-Terrain Vehicle designed for the entry-level youth segment. Built by a reputable Taiwanese manufacturer with a strong presence in the powersports industry, this ATV offers a reliable and engaging platform for younger riders to learn essential operational skills. Its design emphasizes a sturdy frame, protective body panels, and user-friendly controls, making it a suitable choice for recreational riding. The Mongoose KXR series generally targets beginner riders and competes with similar offerings from major manufacturers, providing a balance of performance and accessibility. This comprehensive Service Manual / Workshop Manual in English provides detailed technical information for the Mongoose KXR 90/50. It covers routine maintenance schedules, systematic troubleshooting guides, and step-by-step repair procedures for all major vehicle systems, including the engine, drivetrain, fuel system, brakes, and electrical components. The manual also includes critical technical specifications, such as torque values and fluid capacities, along with complete electrical wiring diagrams. Its workshop-level depth is designed to assist owners, mechanics, and technicians in effectively maintaining, diagnosing, and repairing the ATV, ensuring its optimal performance and longevity. 🏷️ Basic Information Identification Make: Kymco Model: Mongoose KXR 90/50 Model Number: LA20AB Vehicle Type: ATV (All-Terrain Vehicle) 👋 Introduction Market Position Vehicle Segment: Entry-level youth ATV segment, catering to beginner riders and younger enthusiasts. Competitive Analysis Key Competitors: Competes with similar offerings from brands like Yamaha (Grizzly 80/90), Honda (TRX90), and Polaris (Outlaw 90). Key Features Target Audience: Designed for recreational riding and learning essential ATV operation skills for younger riders. Manual Value Proposition: Provides professional-grade repair and maintenance information, mirroring dealer service manuals, enabling owners to perform extensive work themselves. 📋 Manual Details Coverage Manual Type: Service Manual / Workshop Manual Language: English Format: PDF Download Compatibility: All Versions of Windows & Mac Availability: Instant Download 📖 Manual Coverage Systems Covered General Information: Comprehensive overview of the vehicle, including identification, specifications, and safety precautions. Exhaust Muffler Frame Covers: Detailed procedures for inspection, removal, installation, and maintenance of exhaust components and body panels. Inspection Adjustment: Routine checks and adjustments for various vehicle systems to ensure optimal performance and safety. Lubrication System: Information on lubricant types, capacities, replacement intervals, and troubleshooting for the lubrication system. Engine Removal Installation: Step-by-step instructions for safely removing and reinstalling the engine unit. Cylinder Head Valves: Detailed procedures for cylinder head disassembly, valve inspection, adjustment, and reassembly. Cylinder Piston: Information on cylinder bore, piston inspection, ring replacement, and piston assembly. Drive Driven Pulleys Kick Starter: Procedures for servicing and repairing the CVT (Continuously Variable Transmission) system components, including pulleys and the kick starter mechanism. Final Reduction: Details on the final drive system, including gear inspection, lubrication, and seals. Ac Generator Starter Clutch: Servicing and troubleshooting for the electrical generating system and the starter clutch. Crankcase Crankshaft: Procedures for crankcase disassembly, crankshaft inspection, bearing replacement, and reassembly. Cooling System: Information on coolant types, capacities, flushing procedures, and troubleshooting for the cooling system. Fuel System Carburetor Fuel Pump Fuel Tank: Comprehensive coverage of fuel delivery, including carburetor adjustment and cleaning, fuel pump testing, and fuel tank maintenance. Steering Handlebar Front Wheel Front Brake Front Shock ABSorber Front Fork: Detailed procedures for steering system maintenance, front brake caliper and rotor service, and front suspension fork disassembly and repair. Rear Brake Rear Fork Rear Wheel Rear Shock ABSorber: Servicing of the rear braking system, rear swingarm inspection, rear wheel bearing maintenance, and rear shock absorber adjustments. Battery Charging System: Information on battery testing, charging procedures, and troubleshooting of the vehicle's charging system. Ignition System: Diagnosis and repair of the ignition system, including spark plug, coil, and CDI unit testing. Starting System: Troubleshooting and repair of the electric and kick start systems. Switches Horn Fuel Unit Thermo Static Switch Temperature Gauge Instruments Lights: Coverage of all electrical switches, accessories, sensors, instrumentation, and lighting systems. Procedures Included Routine Maintenance: Detailed schedules and procedures for oil changes, filter replacements, chain adjustment, brake checks, and other regular services. Troubleshooting: Systematic diagnostic guides for identifying and resolving common and uncommon vehicle issues. Repair Procedures: Step-by-step instructions for disassembly, repair, and reassembly of all major vehicle components. Technical Specifications: Inclusion of all critical specifications such as torque values, clearances, fluid capacities, and electrical parameters. Wiring Diagrams: Complete electrical wiring diagrams for easy troubleshooting and component identification. Technical Depth Depth Of Coverage: Complete workshop level, suitable for professional technicians and advanced DIY mechanics. Covers everything from basic adjustments to complete engine rebuilds. 📊 Manual Specifications File Attributes File Format: PDF Searchability: Likely searchable text within the PDF for efficient information retrieval. Print Quality: High-resolution, suitable for printing individual pages or the entire document. Binding Type: Not Applicable (Digital Download) Paper Type: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, four-stroke, single-cylinder engine (specific displacement dependent on 50cc or 90cc variant). Performance Estimated...