Segment:
        
        
            Dual-sport/Off-road motorcycle
        
     
    
        
            Target Audience:
        
        
            Enthusiast riders, DIY mechanics, and service technicians.
        
     
    
    
        
            Competitors:
        
        
            Honda CRF250L (later model), Yamaha WR250R, Suzuki DR-Z250.
        
     
    
        
            Klx250S Advantage:
        
        
            Known for its user-friendly nature, capable off-road suspension, and reliable engine, making it a popular choice for trail riding and commuting.
        
     
    
    
        
            Design Philosophy:
        
        
            Lightweight, agile, and versatile for both on-road and off-road use.
        
     
    
        
            Engine Configuration:
        
        
            Liquid-cooled, DOHC, four-valve, single-cylinder engine.
        
     
 
    
    
    
        
            Engine Mechanical:
        
        
            Engine disassembly, assembly, inspection, troubleshooting, and repair of all internal and external components.
        
     
    
        
            Fuel System:
        
        
            Carburetor (Keihin CVK34) tuning, disassembly, cleaning, repair, and adjustment.
        
     
    
        
            Ignition System:
        
        
            CDI ignition system, spark plug specifications, troubleshooting, and testing.
        
     
    
        
            Cooling System:
        
        
            Radiator, fan, thermostat, coolant specifications, and bleeding procedures.
        
     
    
        
            Lubrication System:
        
        
            Oil pump, oil passages, oil filter specifications, and oil change procedures.
        
     
    
        
            Transmission:
        
        
            Clutch operation, gearbox disassembly, assembly, inspection, and maintenance.
        
     
    
        
            Suspension Front:
        
        
            Inverted telescopic fork service, oil levels, seal replacement, and adjustments.
        
     
    
        
            Suspension Rear:
        
        
            Uni-Trak rear suspension, shock absorber service, linkage maintenance, and adjustments.
        
     
    
        
            Braking System:
        
        
            Hydraulic disc brakes (front and rear), caliper service, master cylinder, fluid specifications, bleeding procedures, and pad replacement.
        
     
    
        
            Electrical System:
        
        
            Wiring diagrams, lighting, charging system (stator, regulator/rectifier), battery specifications, starter motor, and fuse box.
        
     
    
        
            Frame And Bodywork:
        
        
            Frame inspection, handlebars, seat, fuel tank, fenders, and all body panel removal/installation.
        
     
    
        
            Wheels And Tires:
        
        
            Wheel bearing service, spoke tensioning, tire replacement, and pressure specifications.
        
     
    
    
        
            Routine Maintenance:
        
        
            Oil changes, filter replacements, chain adjustment, spark plug checks, air filter cleaning/replacement.
        
     
    
        
            Troubleshooting Guides:
        
        
            Diagnostic procedures for common and uncommon issues with detailed symptom-cause-remedy charts.
        
     
    
        
            Engine Rebuild:
        
        
            Complete procedures for cylinder head removal/installation, piston and ring replacement, crankshaft and connecting rod service.
        
     
    
        
            Suspension Overhaul:
        
        
            Detailed instructions for fork seal replacement, shock absorber servicing, and linkage bearing maintenance.
        
     
    
        
            Carburetor Tuning:
        
        
            Jetting adjustments, idle speed settings, pilot screw adjustments, and float bowl level checks.
        
     
    
        
            Electrical Diagnostics:
        
        
            Step-by-step testing of charging system, ignition system, lighting circuits, and starter system.
        
     
    
        
            Brake System Maintenance:
        
        
            Bleeding procedures, pad replacement, caliper piston service, and master cylinder rebuild.
        
     
    
    
        
            Depth:
        
        
            Comprehensive from basic adjustments and fluid changes to complete engine and transmission overhauls.
        
     
    
        
            Detail Level:
        
        
            Highly detailed with exploded views, torque specifications, and special tool requirements.
        
     
 
    
    
    
        
            Crash Test Ratings:
        
        
            N/A (Motorcycle safety is assessed differently than automobiles; focus is on design, materials, and component quality covered in manual).
        
     
    
    
        
            Braking System Type:
        
        
            Hydraulic disc brakes, front and rear.
        
     
    
        
            Suspension Stability:
        
        
            Inverted front fork and Uni-Trak rear suspension contribute to stable handling.
        
     
    
    
        
            Lighting:
        
        
            Halogen headlight, LED taillight, turn signals.
        
     
    
        
            Ergonomics:
        
        
            Designed for rider control and visibility.
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Every 3,000 miles (4,800 km) or 6 months, whichever comes first (refer to manual for exact specification).
        
     
    
        
            Air Filter Cleaning:
        
        
            Every 3,000 miles (4,800 km) or as needed based on riding conditions.
        
     
    
        
            Spark Plug Check:
        
        
            Every 7,500 miles (12,000 km).
        
     
    
        
            Valve Clearance Check:
        
        
            Every 15,000 miles (24,000 km).
        
     
    
    
        
            Engine Oil Type:
        
        
            API SG or SH, SAE 10W-40 motorcycle oil (refer to manual for exact specification).
        
     
    
        
            Engine Oil Capacity:
        
        
            1.7 US qt (1.6 L) without filter change; 1.8 US qt (1.7 L) with filter change.
        
     
    
        
            Coolant Type:
        
        
            Permanent type antifreeze coolant mixed with demineralized water (50/50 ratio).
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 4 (refer to manual for exact specification).
        
     
    
        
            Fork Oil Type Viscosity:
        
        
            Kawasaki KHL15-10W or equivalent SAE 10W (refer to manual for exact specification).
        
     
    
        
            Fork Oil Level:
        
        
            Refer to manual for exact measurement (typically measured from the top of the fork tube with spring removed and fork compressed).
        
     
    
    
        
            Carburetor Icng:
        
        
            Carburetor can sometimes be prone to clogging if fuel is left stagnant for extended periods; regular use and fuel stabilizer recommended.
        
     
    
        
            Cam Chain Tensioner:
        
        
            Some owners report the automatic cam chain tensioner can become noisy over time, potentially requiring manual adjustment or replacement. The manual will detail inspection and adjustment procedures.
        
     
    
        
            Suspension Seals:
        
        
            Like many motorcycles of this era, fork seal leaks can occur with heavy off-road use. The manual provides detailed instructions for seal replacement.