Basic Information Identification Make: Kymco Model: KXR 90 Model Year Range: 1999-2008 Product Type: Workshop Repair Manual Introduction Market Position Vehicle Segment: Youth ATV / Recreational ATV Target Demographic: Young riders, recreational users Competitive Analysis Competitors: Other entry-level ATVs from brands like Honda (e.g., TRX90), Yamaha (e.g., Breeze), Suzuki (e.g., LT-Z90), Arctic Cat (e.g., DVX90) Key Features Vehicle Focus: Designed for ease of use, safety, and reliability for younger riders. Manual Purpose: To empower owners and technicians with the knowledge for effective maintenance and repair. Manual Details Coverage Areas Primary Coverage: Repair, Maintenance, Troubleshooting, Disassembly, Inspection, Rebuilding, Assembly Target Audience: Professional Mechanics (Beginner to Advanced) and Vehicle Owners Page Count Estimated Page Count: N/A (Digital Download) Manual Type Type: Workshop Manual / Repair Manual / Service Manual / Shop Manual / Technical Manual Language Language: English Format Download Format: PDF / WINZIP Delivery Method: Instant Download via Email Compatibility Operating Systems: All versions of operating systems Device Compatibility: Any device with a PDF reader Manual Coverage Systems Covered Engine Systems: Engine Serial Number identification, Specifications, Lubrication Points, Torque Values, Troubleshooting Electrical Systems: Cable & Harness Routing, Wiring Diagram, Troubleshooting General Maintenance: Service Precautions, Torque Values, Lubrication Points, Tools Procedures Included Diagnostic Procedures: Troubleshooting of vehicle-related problems Repair Procedures: Rebuilding and assembly of components, recommended repair procedures Maintenance Procedures: Recommended maintenance procedures Inspection Procedures: Inspection of parts for reuse Technical Depth Depth: Comprehensive from basic maintenance to component rebuilding, suitable for beginners and experienced technicians Manual Specifications File Format Digital Format: PDF (Portable Document Format) for widespread compatibility Compression: WINZIP archive for efficient download Print Quality Printability: Printable for physical reference Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) Engine Specifications Primary Engine Engine Type: Four-stroke, air-cooled gasoline engine Displacement: Approx. 89 cc (Cubic Centimeters) Bore X Stroke: Typical for this class, specific details would be in the manual. Valve Configuration: Likely SOHC (Single Overhead Camshaft), common for this engine size. Performance Horsepower: Estimated 6-8 HP (Horsepower), specific figures not provided in product info. Torque: Estimated 5-7 lb-ft (Pound-feet), specific figures not provided in product info. Fuel System Carburetion: Carburetor (likely a Keihin or Mikuni equivalent for this displacement). Fuel Type: Unleaded Gasoline Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) Cooling System Cooling Method: Air Cooling Transmission Standard Transmission Type: Automatic Continuously Variable Transmission (CVT) Drive System: Chain Drive Features Gear Selection: Forward, Neutral, Reverse (likely F-N-R selector) Transmission Fluid: Specific type and capacity detailed in manual. Dimensions Exterior Overall Length: Approx. 1480 mm (58.3 in), typical for this class. Overall Width: Approx. 900 mm (35.4 in), typical for this class. Overall Height: Approx. 940 mm (37.0 in), typical for this class. Weights Dry Weight: Approx. 115 kg (253.5 lbs), typical for this class. Gross Vehicle Weight Rating: Detailed in manual. Towing Capacity: Generally not rated for towing on youth ATVs. Cargo Rack Capacity: Front and rear racks are common, specific load ratings in manual. Safety Features Ratings Safety Features: Designed with youth rider safety in mind: speed limiter capabilities (often via throttle stop screw), automatic transmission, sturdy frame. Active Features Braking System: Hydraulic disc brakes front and rear (typical). Specifics on brake pad types, fluid, and bleeding procedures in manual. Suspension: Independent front suspension, Swingarm rear suspension (typical). Adjustment and maintenance details in manual. Passive Features Lighting: Headlights, Taillight/Brake light, often with ATVs requiring reflectors. Child Safety: Throttle limiter, engine cut-off tether switch (often included or an option). Technology Features Infotainment Infotainment System: Not applicable. Basic instrumentation typically includes a speedometer, odometer, and indicator lights. Driver Assistance Assistance Features: Focus on basic safety: throttle limiter, kill switch tether. Connectivity Connectivity Options: Not applicable. Maintenance Service Intervals Oil Change Interval: Typically every 100 hours or annually. Specifics in manual. Air Filter Cleaning: Recommended every 50 hours or more frequently in dusty conditions. Specifics in manual. Spark Plug Replacement: Typically every 100-200 hours or annually. Specifics in manual. Valve Adjustment: Recommended every 200-300 hours. Specifics in manual. Fluid Specifications Engine Oil Type: Likely SAE 10W-40 or 20W-50 motorcycle-specific oil. Refer to manual for exact API service classification. Engine Oil Capacity: Approx. 1.0-1.2 liters. Specific capacity in manual. Brake Fluid Type: DOT 3 or DOT 4 hydraulic brake fluid. Refer to manual. Coolant Type: N/A (Air-cooled engine) Known Issues Common Wear Items: Brake pads, tires, drive chain, spark plugs, air filter, battery. Carburetor Cleaning: Common maintenance item for carbureted engines, especially after storage or if fuel quality is poor. Tools Required Tools: Standard metric tool set, torque wrench, specialized ATV tools as indicated in the manual. Vehicle History Brand Heritage Manufacturer: Kymco (Kwang Yang Motor Co., Ltd.) is a Taiwanese manufacturer known for scooters, ATVs, and motorcycles. Model Evolution Kx Series: The KXR series represents Kymco's offering in the youth ATV segment, evolving over the years with minor...