This manual provides comprehensive service and repair information for Mongoose 50 (KXR 50) and Mongoose 90 (KXR 90) ATVs, covering model years 2004 through 2014. A respected manufacturer of powersports vehicles, the Mongoose series was designed as sport ATVs, with these models specifically catering to younger riders. Known for their reliability and performance in their class, these ATVs feature automatic Continuously Variable Transmissions (CVT) and chain drive systems, with the 50cc and 90cc variants typically utilizing air-cooled, single-cylinder engines. The engineering quality of these ATVs is supported by detailed documentation that ensures their longevity and optimal performance for recreational riding. This factory service manual is an indispensable resource for owners and technicians alike. It details all aspects of maintenance, from regular checks and lubrication to complete disassembly and reassembly of the engine, chassis, and electrical systems. The manual includes troubleshooting guidance, diagnostic procedures, critical torque specifications, wiring schematics, and exploded diagrams, all presented with hundreds of photos and illustrations. Its exhaustive coverage ensures that users can effectively maintain, repair, and diagnose issues across all major components, from the engine and fuel system to the braking and suspension systems, making it a complete guide for ensuring the safe and efficient operation of your Mongoose ATV. 🏷️ Basic Information Identification Make: KYMCO Model: Mongoose 50 / KXR 50 & Mongoose 90 / KXR 90 Model Years Covered: 2004-2014 Product Name: 2004-2014 KYMCO Mongoose 50 & Mongoose 90 Service Repair Manual KXR 50 KXR 90 (FSM PDF Preview) Download 👋 Introduction Market Position Target Audience: Owners of KYMCO Mongoose 50/90 ATVs, DIY enthusiasts, professional ATV mechanics Competitive Analysis Value Proposition: Provides comprehensive repair and maintenance information at a significantly lower cost than dealership services. Key Features Content Detail: Includes hundreds of photos and illustrations, detailed diagrams, wiring schematics, torque specifications, and step-by-step instructions. Delivery Method: Instant download post-payment 📋 Manual Details Coverage Areas Primary Coverage: Complete Service and Repair for KYMCO Mongoose 50 (KXR 50) and Mongoose 90 (KXR 90) ATVs Page Count Estimated Page Count: Extensive (Exact count not specified, but described as 'complete' and 'hundreds of photos and illustrations') Manual Type Manual Type: Official Factory Service Manual (FSM) / Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: General Information, Lubrication System, Fuel System, Cylinder Head/Valves, Cylinder/Piston, Crankcase/Crankshaft, Drive and Driven Pulleys, Final Reduction/Transmission System Chassis Systems: Frame Covers, Exhaust Muffler, Front Wheel/Brake/Suspension/Steering System, Rear Wheel/Swing Arm/Hydraulic Brake Electrical Systems: Battery/Charging System/A.C. Generator, Ignition System, Starting System, Bulbs Removal/Instrument/Horn Part Diagrams: Includes exploded diagrams of various components for easy identification and reassembly. Procedures Included Maintenance: Regular maintenance, inspection, adjustments, lubrication Repair Rebuild: Complete tear down and rebuild, diagnostic and repair procedures, component-specific repairs Troubleshooting: Troubleshooting guidance included Torquing Specifications: Critical torque specifications for all fasteners are provided to ensure correct assembly and prevent component damage. Technical Depth Depth Of Information: Comprehensive, covering everything from basic maintenance to complete disassembly and reassembly, suitable for DIYers and experienced mechanics. Diagnostic Procedures: Includes detailed diagnostic procedures for identifying and resolving mechanical and electrical faults. 📊 Manual Specifications File Format File Type: PDF Compatibility: All versions of Windows & Mac Software Requirements: Adobe PDF Reader, WinZip Delivery Speed: Instant Delivery Print Quality Printable: Yes, all pages are printable. Searchable: Yes, text is searchable. Bookmarked: Yes, the file is bookmarked for easy navigation. Zoom Functionality: Yes, allows zooming in and out. Binding Type Binding: Digital Download (PDF) Paper Type Paper Type: Not Applicable (Digital) ⚙️ Engine Specifications Primary Engine Engine Type 50Cc: Likely a 49cc or similar single-cylinder, air-cooled, 2-stroke engine (typical for this class of ATV, specific details in manual) Engine Type 90Cc: Likely an 89cc or similar single-cylinder, air-cooled, 2-stroke engine (typical for this class of ATV, specific details in manual) Performance Horsepower Torque 50Cc: Specifications available within the manual. Horsepower Torque 90Cc: Specifications available within the manual. Fuel System Fuel Delivery 50Cc: Likely a carburetor-based fuel system (specific model details in manual). Fuel Delivery 90Cc: Likely a carburetor-based fuel system (specific model details in manual). 🔧 Transmission Standard Transmission Type: Automatic Continuously Variable Transmission (CVT) Drive System: Chain drive to rear axle Features Clutch Type: Centrifugal clutch (part of CVT system) 📐 Dimensions Exterior Atv Type: Youth ATV / Sport ATV Weights Dry Weight 50Cc: Specifications available within the manual. Dry Weight 90Cc: Specifications available within the manual. 🛡️ Safety Features Ratings Atv Safety Standards: Manual will reference relevant safety guidelines for ATV operation and maintenance. Active Features Braking System: Hydraulic disc brakes (front and rear) are typical for this model, detailed in the manual. Passive Features Lighting: Headlights, taillight, brake light. Bulb removal and replacement covered. 💡 Technology Features Infotainment Instrumentation: Includes information on instrument panel components like speedometer, odometer, indicator lights (e.g., neutral, oil pressure, turn signals), and horn. Driver Assistance Lighting System: Details...