Segment:
        
        
            Off-road, Enduro
        
     
    
    
        
            Competitors 1999-2003:
        
        
            Husqvarna WR250, Yamaha YZ250 WR, Suzuki RMX250, Honda CR250R E
        
     
    
    
        
            Bike Focus:
        
        
            Lightweight, agile, powerful two-stroke performance for off-road competition and trail riding.
        
     
 
    
    
    
        
            Systems Covered:
        
        
            Engine, Transmission, Chassis, Electrical System, Suspension, Brakes, Fuel System, Cooling System, Exhaust System, Bodywork, Troubleshooting, Maintenance, Specifications
        
     
    
    
        
            Page Count:
        
        
            Hundreds of pages (specific count not provided, but described as comprehensive)
        
     
    
    
        
            Manual Type:
        
        
            Factory Service Repair Manual
        
     
    
    
    
    
 
    
    
    
        
            Engine Overhaul:
        
        
            Complete engine disassembly, inspection, repair, and reassembly procedures for the 200cc two-stroke engine.
        
     
    
        
            Transmission Service:
        
        
            Detailed instructions for gearbox maintenance, clutch service, and troubleshooting transmission issues.
        
     
    
        
            Chassis And Suspension:
        
        
            Procedures for fork and shock absorber service, linkage maintenance, frame inspection, and wheel bearing replacement.
        
     
    
        
            Electrical Diagnostics:
        
        
            Wiring diagrams, troubleshooting guides for ignition, lighting, and charging systems, as well as component testing.
        
     
    
        
            Brake System Maintenance:
        
        
            Guidance on brake pad replacement, caliper service, master cylinder maintenance, and bleeding procedures.
        
     
    
        
            Fuel And Carburetion:
        
        
            Detailed information on carburetor adjustment, cleaning, jetting, and fuel system component inspection.
        
     
    
        
            Frame And Bodywork:
        
        
            Repair procedures for plastic body panels, seat, fuel tank, and frame components.
        
     
    
    
        
            Routine Maintenance:
        
        
            Scheduled maintenance tasks, oil changes, filter replacements, chain adjustment, and spark plug service.
        
     
    
        
            Troubleshooting Guides:
        
        
            Systematic approaches to diagnosing and resolving common operational problems and failures.
        
     
    
        
            Major Repairs:
        
        
            Instructions for significant component overhauls and replacements, including engine rebuilds.
        
     
    
        
            Component Disassembly Reassembly:
        
        
            Step-by-step guides for taking apart and putting back together all major motorcycle systems.
        
     
    
        
            Engine Tuning:
        
        
            Basic tuning advice, carburetor jetting, and exhaust modification considerations.
        
     
    
        
            Wheel And Tire Service:
        
        
            Information on tire changes, wheel balancing, and spoke tensioning.
        
     
    
        
            Diagnostic Charts:
        
        
            Flowcharts and tables to systematically diagnose common problems.
        
     
    
    
        
            Depth Of Information:
        
        
            Comprehensive factory-level detail suitable for professional technicians and experienced DIY mechanics.
        
     
    
        
            Torque Specifications:
        
        
            Precise torque values for all critical fasteners.
        
     
    
        
            Clearances And Tolerances:
        
        
            Detailed specifications for engine component clearances, bearing tolerances, etc.
        
     
    
        
            Wiring Diagrams:
        
        
            Full electrical system schematics for troubleshooting and repairs.
        
     
 
    
    
    
        
            Engine Type:
        
        
            2-stroke, Single Cylinder
        
     
    
        
            Displacement:
        
        
            192.7 cc (11.77 cu in)
        
     
    
        
            Bore X Stroke:
        
        
            62.5 mm x 62.4 mm (2.46 in x 2.46 in)
        
     
    
        
            Cooling System:
        
        
            Liquid-cooled
        
     
    
        
            Carburetor:
        
        
            Keihin PWK 39
        
     
    
    
        
            Horsepower Approx:
        
        
            ~40 hp @ 8,500 rpm (Estimate, official figures vary)
        
     
    
        
            Torque Approx:
        
        
            ~35 Nm @ 7,500 rpm (Estimate, official figures vary)
        
     
    
    
        
            Fuel Type:
        
        
            Unleaded gasoline with 2-stroke oil pre-mix
        
     
    
        
            Fuel Ratio:
        
        
            1:40 or 1:50 (recommended by KTM)
        
     
    
    
        
            Ignition Type:
        
        
            Digital CDI ignition system
        
     
 
    
    
    
        
            Transmission Type:
        
        
            6-speed constant mesh
        
     
    
        
            Clutch Type:
        
        
            Wet multi-disc clutch, hydraulically operated
        
     
    
    
        
            Gear Ratios:
        
        
            Specific ratios available in manual, typically focused on off-road performance.
        
     
    
        
            Transmission Oil Spec:
        
        
            KTM recommends specific gearbox oil, often a SAE 80W/90 API GL-4.
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Refer to manual; typically every 15-25 hours of riding for gearbox oil.
        
     
    
        
            Top End Rebuild Interval:
        
        
            Highly variable based on use; can range from 50-100+ hours for piston/rings, and 100-200+ hours for a full engine rebuild.
        
     
    
    
        
            Engine Oil Type:
        
        
            Premix 2-stroke oil, specific grade and brand recommendations in manual.
        
     
    
        
            Coolant Type:
        
        
            Ethylene glycol-based antifreeze mixture.
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 4 brake fluid.
        
     
    
        
            Fork Oil Type:
        
        
            Specific fork oil weight and level specified in the manual (e.g., WP suspension fluid).
        
     
    
    
        
            Common Wear Items:
        
        
            Piston rings, clutch plates, wheel bearings, swingarm pivot bearings, steering head bearings, fork seals, exhaust packing.
        
     
    
        
            Potential Problems:
        
        
            Carburetor jetting sensitivity to altitude and temperature, reed valve wear, kickstart mechanism wear.