Product Category:
Entry-level to mid-range sport ATV.
Target Audience:
Recreational riders, youth riders, beginner to intermediate ATV enthusiasts.
Key Competitors:
Yamaha Raptor 50/80, Suzuki LT-Z50/90, Honda TRX90X, Polaris Outlaw 50/90.
Vehicle Strengths:
User-friendly design, manageable power, durability, cost-effectiveness for its class.
Manual Value Proposition:
Provides comprehensive technical data essential for owners to maintain, repair, and troubleshoot their KXR50/KXR90, maximizing lifespan and performance.
Engine Systems:
Engine assembly, disassembly, tuning, troubleshooting, lubrication, cooling, fuel delivery, ignition, exhaust.
Transmission Systems:
CVT (Continuously Variable Transmission) operation, maintenance, repair, belt replacement, clutch assembly.
Drivetrain Systems:
Front and rear differentials, drive shafts, U-joints, axle assemblies, wheel bearings.
Suspension Systems:
Front and rear suspension geometry, shock absorber replacement, spring inspection, A-arm bushings, steering linkage.
Braking Systems:
Hydraulic brake system diagnosis, caliper overhaul, master cylinder repair, brake pad replacement, rotor servicing, bleeding procedure.
Electrical Systems:
Wiring diagrams, battery service, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), lighting, ignition system components.
Fuel System:
Carburetor (if applicable) adjustment and cleaning, fuel pump (if applicable), fuel lines, fuel filter replacement.
Cooling System:
Radiator inspection and cleaning, coolant type and capacity, fan operation, thermostat replacement.
Exhaust System:
Muffler inspection, exhaust pipe sealing, gasket replacement.
Frame And Bodywork:
Chassis inspection, plastic body panel removal and installation, seat repair, handlebar assembly.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, chain adjustment, air filter cleaning/replacement, lubrication points.
Troubleshooting Diagnostics:
Step-by-step diagnostic procedures for common performance issues, electrical faults, starting problems.
Major Repairs:
Engine rebuilds, transmission overhauls, suspension component replacement, brake system repairs.
Component Rebuilds:
Detailed instructions for rebuilding carburetors, water pumps, brake calipers, etc.
Technical Adjustments:
Carburetor jetting, valve clearance adjustments (if applicable), ignition timing (if applicable).
Wiring Diagrams:
Comprehensive electrical schematics for all circuits.
Depth Of Coverage:
Comprehensive (covering from basic maintenance to complete engine and component rebuilds).
Detail Level:
Highly detailed with exploded views, diagrams, specifications, and step-by-step instructions.
Diagnostic Focus:
Detailed troubleshooting guides for identifying and resolving mechanical and electrical issues.
Engine Type 50:
Air-cooled, 4-stroke, SOHC (Single Overhead Camshaft)
Engine Type 90:
Air-cooled, 4-stroke, SOHC (Single Overhead Camshaft)
Displacement 50:
49.5 cc (Cubic Centimeters)
Displacement 90:
89.6 cc (Cubic Centimeters)
Bore Stroke 50:
Refer to manual for specific dimensions (e.g., 39.0 x 41.4 mm).
Bore Stroke 90:
Refer to manual for specific dimensions (e.g., 47.0 x 51.8 mm).
Compression Ratio:
Typically around 9.5:1 to 10.0:1 (refer to manual for exact specification).
Horsepower Output:
Estimated 5-7 HP for KXR50, 7-9 HP for KXR90 (actual figures vary and are not explicitly provided in product info).
Torque Output:
Refer to manual for specific torque figures (not provided in product info).
Fuel Delivery System:
Carburetor (Keihin or similar CV type common in this class).
Fuel Type:
Unleaded gasoline.
Fuel Tank Capacity:
Approximately 2.3 Liters (0.6 US gallons).
Oil Type:
SAE 10W-40 motorcycle or ATV specific 4-stroke engine oil (API SG or higher).
Oil Capacity:
Approximately 0.8 - 1.0 Liters (refer to manual for precise capacity).
Ignition System:
CDI (Capacitor Discharge Ignition).
Spark Plug Type:
Refer to manual for specific NGK or equivalent part number (e.g., CR7E).
Cooling Method:
Air-cooled.
Overall Length:
Refer to manual for exact dimensions (typically around 1500-1600 mm).
Overall Width:
Refer to manual for exact dimensions (typically around 900-1000 mm).
Overall Height:
Refer to manual for exact dimensions (typically around 950-1050 mm).
Wheelbase:
Refer to manual for exact dimensions (typically around 1050-1150 mm).
Ground Clearance:
Refer to manual for exact dimensions (typically around 100-150 mm).
Dry Weight:
Refer to manual for exact weight (typically around 100-120 kg).
Curb Weight:
Refer to manual for exact weight (includes all necessary fluids and a full tank of fuel).
Front Tire Size:
Typically AT16x7.00-7 or similar.
Rear Tire Size:
Typically AT19x7.00-8 or similar.
Wheel Bolt Pattern:
Refer to manual for specific pattern (common for ATVs).
Atv Safety Standards:
Adheres to industry safety standards for youth ATVs (e.g., ANSI/SVIA standards where applicable).
Throttle Limiter:
Adjustable throttle limiter screw to control speed for younger riders.
Speed Governor:
Potential electronic or mechanical speed limiting features (refer to manual).
Flag Mount:
Provision for a safety flag (highly recommended).
Lighting:
Headlights, taillight/brakelight for visibility.
Parking Brake:
Hand-operated parking brake system.
Engine Oil Change:
Every 50 hours of operation or annually, whichever comes first (refer to manual for specifics).
Air Filter Cleaning:
Every 25 hours of operation or more frequently in dusty conditions.
Spark Plug Check:
Inspect every 50 hours, replace as needed.
Drive Belt Inspection:
Inspect every 100 hours for wear and damage.
Coolant Type:
Ethylene glycol based antifreeze coolant (refer to manual for specific mixture ratio and type).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Common Wear Items:
CVT belt wear, carburetor gumming if not properly stored, suspension bushings, brake pad wear.
Storage Recommendations:
Fuel stabilizer recommended for extended storage to prevent carburetor issues.
