Basic Information Identification Make: Kymco Model: Mongoose KXR 90 / KXR 50 Product Type: Complete Workshop Service Repair Manual Product Format: PDF Download Codes Vehicle Model Codes: KXR 90, KXR 50 Introduction Market Position Target Audience: Kymco Mongoose KXR 90/50 ATV owners and independent repair shops Value Proposition: Enables DIY repairs, saving significant costs on professional servicing Competitive Analysis Competitors: Factory service manuals, other third-party repair guides Differentiation: Comprehensive coverage, digital delivery, ease of use with step-by-step instructions and pictures Key Features Ease Of Use: Easy-to-follow step-by-step instructions Cost Savings: Empowers users to perform their own repairs, reducing labor costs Accessibility: Instant email delivery after payment, accessible on multiple devices Completeness: Covers every service and repair procedure A-Z Manual Details Coverage Areas Applicable Years: 2003, 2004, 2005, 2006, 2007 Model Variants Covered: All models, engines, trim, and transmission types for KXR 90 and KXR 50 Page Count Estimated Page Count: Extensive (A-Z coverage, specific page count not provided in product info) Manual Type Type: Workshop Service Repair Manual Language Language: English Format File Format: PDF Manual Coverage Systems Covered Engine Mechanical: Full engine disassembly, inspection, assembly, and tuning Fuel System: Carburetor tuning, fuel pump, fuel lines, fuel tank Ignition System: Spark plug, ignition coil, CDI unit, timing Lubrication System: Oil pump, oil filter, oil passages Cooling System: Air cooling system components and maintenance Transmission: CVT operation, belt inspection, clutch assembly Drivetrain: Chain drive, rear axle, sprocket maintenance Braking System: Front and rear brake assembly, hydraulic lines, pad/shoe replacement Suspension: Front and rear suspension components, shock absorbers, linkages Steering: Handlebar assembly, steering stem, tie rods Electrical System: Wiring diagrams, battery, lighting, starter motor, charging system Bodywork And Frame: Frame inspection, body panels, seat, fenders Procedures Included Maintenance: Regular servicing, oil changes, filter replacements, lubrication Troubleshooting: Diagnostic procedures for common problems, symptom-based solutions Repair: Step-by-step instructions for component repair and replacement Rebuilds: Comprehensive procedures for engine and transmission rebuilds Adjustments: Carburetor, chain tension, brake, and clutch adjustments Assembly Disassembly: Detailed instructions for complete disassembly and reassembly Technical Depth Depth: Comprehensive, covering all aspects from basic maintenance to complete engine rebuilds Diagnostic Capabilities: Includes troubleshooting guides and diagnostic procedures Visual Aids: Step-by-step instructions with pictures Manual Specifications File Format PDF Quality: High quality, clear images and text Searchable: Likely searchable if created from a digital source with OCR Print Quality Printability: Fully printable, individual pages or entire manual Binding Type Digital Format Notes: Downloadable to PC, MAC, tablets, and smartphones Paper Type Digital Format Notes: Printable on standard paper formats Engine Specifications Primary Engine Engine Type 90: Single-cylinder, 2-stroke, air-cooled (common configuration for this era/class) Engine Type 50: Single-cylinder, 2-stroke, air-cooled (common configuration for this era/class) Performance Displacement 90: Approximately 89cc (based on model designation) Displacement 50: Approximately 49cc (based on model designation) Fuel System Fuel Delivery: Carburetor (typical for 2-stroke ATVs of this size and era) Fuel Type: Unleaded Gasoline mixed with 2-stroke oil (pre-mix or oil injection system, manual will detail) Engine Construction Cylinder Material: Cast Iron Cylinder (typical for 2-stroke) Cooling Method: Forced Air Cooling Transmission Standard Transmission Type: Automatic Continuously Variable Transmission (CVT) Features Drive System: Chain drive to rear axle Clutch Type: Centrifugal Automatic Clutch Dimensions Exterior Vehicle Type: All-Terrain Vehicle (ATV) Weights Dry Weight Estimation: Likely in the range of 90-120 kg (specific figures vary by model and equipment, manual would confirm) Safety Features Ratings Atv Safety Standards: Adherence to relevant ATV safety standards for the manufacturing period (manual may reference) Active Features Braking System Type: Drum brakes or Disc brakes (front and rear, manual will specify) Passive Features Lighting: Headlights, taillight, brake light Technology Features Infotainment Features: Basic instrumentation (speedometer, odometer, indicator lights). No advanced infotainment systems expected. Driver Assistance Features: No electronic driver assistance features typically found on modern vehicles. Connectivity Features: No integrated connectivity features. Maintenance Service Intervals Oil Change Interval: Typical 2-stroke ATV interval: every 1,000-2,000 km or annually (manual will provide specific recommendations) Spark Plug Replacement: Refer to manual for specific interval, typically every 3,000-5,000 km or as needed based on condition Air Filter Cleaning: Regular cleaning/replacement, especially in dusty conditions. Manual will specify frequency. Fluid Specifications Engine Oil: Specific 2-stroke oil blend required (pre-mix or separate reservoir). Manual will detail API/JASO rating and mixture ratio if applicable. Gear Oil: Likely requires a specific gear oil for the final drive. Manual will specify API GL-4 or GL-5 rating and viscosity. Known Issues Carburetor Clogging: Common in 2-stroke engines, especially with infrequent use or poor fuel quality. Manual provides cleaning/tuning procedures. Cvt Belt Wear: Belts can stretch or wear over time, affecting performance. Manual details inspection and replacement. Electrical Connections: Corrosion or loose connections can lead to intermittent issues. Manual includes wiring diagrams for troubleshooting. Vehicle History Brand Heritage Manufacturer Origin: Kymco (Kwang Yang Motor Co., Ltd.) is a Taiwanese manufacturer known for...