Target Audience:
Kymco ATV owners, independent repair shops, and DIY enthusiasts seeking professional-level repair and maintenance information.
Value Proposition:
Provides access to the same comprehensive technical data used by professional repair shops, enabling cost savings through DIY maintenance and repairs.
Content Highlights:
Detailed step-by-step instructions, numerous illustrations, diagrams, specifications, and troubleshooting guides.
Delivery Method:
Instant Download upon secure payment processing.
Primary Coverage:
Comprehensive repair and service procedures for Kymco Mongoose KXR50 and KXR90 ATVs.
Diagnostic Tools Required:
Covers diagnostic procedures that may require basic hand tools, multimeters, and potentially specific Kymco diagnostic tools for advanced electrical issues.
Estimated Page Count:
Typically 200-400 pages, depending on the specific model year and included detail.
Type:
Service Repair Manual
Format:
PDF (Digital Download)
Engine Systems:
Fuel system, lubrication, cooling, combustion, cylinder head/valves, alternator/starter clutch, crankcase, piston, cylinder, crankshaft, transmission, balancer.
Drivetrain Systems:
Gearbox, clutch, transmission system.
Chassis Systems:
Front wheel and steering, rear wheel, chassis, fenders, exhaust pipe, frame, body panels, wheels, tires.
Electrical Systems:
Electrical system, battery/charging system, ignition system, electric starter, lights, meters, switches, wiring diagrams.
Braking Suspension Steering:
Braking system, suspension, front wheel and steering system.
Bodywork Fixtures:
Body & Fixtures, Frame/Body Panels/Exhaust System.
Cooling System:
Air-cooling system maintenance and inspection, including heat dissipation principles.
Maintenance Procedures:
Periodic checks & Adjustments, routine maintenance, lubrication.
Repair Procedures:
Engine removal and installation, engine rebuild, transmission overhaul, brake caliper servicing, electrical component replacement.
Diagnostic Procedures:
Troubleshooting guides, diagnostic charts, symptom-based repair advice.
Depth:
Complete workshop level detail, suitable for professional technicians and advanced DIY mechanics.
Specific Procedures Included:
Includes detailed instructions for valve adjustment, carburetor overhaul, clutch replacement, starter motor testing, stator testing, and wiring harness diagnostics.
Fuel Injection System:
If equipped, detailed coverage of fuel injection system components, sensors, and diagnostic codes.
Engine Type Kx50:
Likely a 49cc or 50cc single-cylinder, air-cooled, 2-stroke or 4-stroke engine (specific designation varies by model year and sub-model).
Engine Type Kx90:
Likely an 89cc or 90cc single-cylinder, air-cooled, 2-stroke or 4-stroke engine (specific designation varies by model year and sub-model).
Horsepower Range:
Estimated 4-7 HP for the KXR50, 7-10 HP for the KXR90 (exact figures vary by engine configuration and model year).
Torque Specifications:
Detailed torque specifications for critical engine components (e.g., cylinder head bolts, crankcase bolts) are included in the manual.
Fuel Delivery Kx50:
Carbureted (likely Keihin or similar), with specific carburetor jetting and adjustment details provided.
Fuel Delivery Kx90:
Carbureted (likely Keihin or similar), with specific carburetor jetting and adjustment details provided. Some later models may feature fuel injection.
Fuel Type:
Unleaded gasoline.
Ignition Type:
CDI (Capacitor Discharge Ignition) or TCI (Transistor Controlled Ignition).
Engine Bore Stroke:
Specific bore and stroke dimensions for both KXR50 and KXR90 engines are provided for piston and cylinder servicing.
Compression Ratio:
Specified compression ratios for optimal engine performance and diagnostics.
Transmission Type:
Automatic CVT (Continuously Variable Transmission) with forward, neutral, and reverse gears.
Optional Gearbox:
N/A (CVT is standard for this model).
Gearbox Coverage:
Includes removal, installation, inspection, and servicing of the transmission and clutch components.
Transmission Fluid Type:
Specific automatic transmission fluid (ATF) type or gear oil as specified by Kymco, detailed in the manual.
Length Approx:
Typically around 1400-1500 mm (exact dimensions vary by model year).
Width Approx:
Typically around 800-900 mm (exact dimensions vary by model year).
Height Approx:
Typically around 900-1000 mm (exact dimensions vary by model year).
Dry Weight Approx:
Approximately 80-100 kg (exact weight varies by model year and configuration).
Fuel Capacity:
Typically around 5-7 liters (specific capacity detailed in the manual).
Oil Change Interval:
Recommended oil changes every 1000 km or 6 months, or as specified in the manual for specific engine types.
Spark Plug Replacement:
Recommended spark plug checks and replacement at intervals specified in the manual, typically every 3000-5000 km.
Air Filter Cleaning:
Regular inspection and cleaning of the air filter element, with replacement intervals provided for dusty conditions.
Engine Oil Type Kx50:
Typically SAE 10W-40 or 20W-50 API SG or higher for 4-stroke engines, or specific 2-stroke oil for 2-stroke variants. Manual will specify exact grade.
Engine Oil Type Kx90:
Typically SAE 10W-40 or 20W-50 API SG or higher for 4-stroke engines, or specific 2-stroke oil for 2-stroke variants. Manual will specify exact grade.
Coolant Type:
If liquid-cooled, recommended coolant is a 50/50 mixture of ethylene glycol antifreeze and distilled water.
Common Wear Items:
Brake pads, tires, drive belt (for CVT), spark plugs, and air filters are common wear items requiring regular inspection and replacement.
Potential Problems:
Carburetor tuning issues, CVT belt wear, and electrical connection corrosion can be potential areas of concern, all addressed in the troubleshooting section.
Kymco Overview:
Kymco (Kwang Yang Motor Co., Ltd.) is a Taiwanese company established in 1963, known for producing motorcycles, scooters, ATVs, and utility vehicles. They have a reputation for producing reliable and competitively priced powersports vehicles.
Mongoose Series:
The Mongoose series represents Kymco's entry into the youth and beginner ATV market, offering accessible and fun off-road experiences. The KXR models are generally geared towards recreational use.
Production Period:
The Mongoose KXR models have been in production for several years, with various updates and refinements across different model years. The manual covers the specific range of production for the 50cc and 90cc variants.
