This workshop service repair manual covers a wide range of off-road and supermoto motorcycles produced between 2000 and 2007. The manual encompasses models such as the 250 EXC RACING, 400 SX, 450 SX, 400 MXC, 450 MXC, 400 XC, 450 XC, 400 XC-W, 450 XC-W, 400 EXC, 450 EXC, 400 SMR, 450 SMR, 400 SXS RACING, 450 SXS RACING, 520 SX, 525 SX, 520 MXC, 525 MXC, 520 XC, 525 XC, 520 XC-W, 525 XC-W, 520 EXC, 525 EXC, 520 SMR, 525 SMR, 540 SXS, 560 SMR, and 610 CRA. An Austrian manufacturer, is renowned for its strong heritage in off-road racing and a philosophy of performance. These models represent a significant period of development in the four-stroke off-road line, with engine and chassis updates throughout their production years, designed for competition and demanding riding conditions.
This comprehensive manual provides essential technical information for the maintenance, repair, and restoration of these motorcycles. It details engine mechanical and electrical systems, drivetrain, chassis, suspension, brakes, and fuel systems, offering step-by-step repair instructions, troubleshooting guides, and diagnostic procedures. The manual includes periodic maintenance schedules, torque values, fluid capacities, and clear, zoomable illustrations, including exploded views and component breakdowns. This resource is invaluable for professional technicians, mechanics, and DIY enthusiasts seeking to ensure the longevity and optimal performance of their off-road and supermoto machines.
    
    
    
    
    
        
            Model:
        
        
            250 EXC RACING, 400 SX, 450 SX, 400 MXC, 450 MXC, 400 XC, 450 XC, 400 XC-W, 450 XC-W, 400 EXC, 450 EXC, 400 SMR, 450 SMR, 400 SXS RACING, 450 SXS RACING, 520 SX, 525 SX, 520 MXC, 525 MXC, 520 XC, 525 XC, 520 XC-W, 525 XC-W, 520 EXC, 525 EXC, 520 SMR, 525 SMR, 540 SXS, 560 SMR, 610 CRA
        
     
    
        
            Product Type:
        
        
            Workshop Service Repair Manual
        
     
    
    
        
            Production Years:
        
        
            2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
        
     
    
    
        
            Vehicle Codes:
        
        
            Not specified in provided information
        
     
 
    
    
    
        
            Positioning:
        
        
            Essential technical resource for owners and technicians of specific KTM off-road and supermoto models.
        
     
    
    
        
            Advantage:
        
        
            Offers comprehensive, factory-level information for a wide range of popular KTM models from a specific era.
        
     
    
    
        
            Features:
        
        
            Detailed procedures, extensive troubleshooting, clear illustrations, wide model coverage.
        
     
    
    
        
            Value:
        
        
            Enables cost savings through DIY repairs and maintenance, ensures proper servicing for longevity and performance.
        
     
 
    
    
    
        
            Vehicle Coverage:
        
        
            KTM 250 EXC RACING, 400 SX, 450 SX, 400 MXC, 450 MXC, 400 XC, 450 XC, 400 XC-W, 450 XC-W, 400 EXC, 450 EXC, 400 SMR, 450 SMR, 400 SXS RACING, 450 SXS RACING, 520 SX, 525 SX, 520 MXC, 525 MXC, 520 XC, 525 XC, 520 XC-W, 525 XC-W, 520 EXC, 525 EXC, 520 SMR, 525 SMR, 540 SXS, 560 SMR, 610 CRA
        
     
    
        
            Model Years Covered:
        
        
            2000-2007
        
     
    
    
        
            Estimated Page Count:
        
        
            Large (up to 5GB file size mentioned, indicating extensive detail)
        
     
    
    
        
            Type:
        
        
            Workshop Service Repair Manual
        
     
    
    
        
            Language:
        
        
            English (implied by product description and common industry practice for this type of manual)
        
     
    
    
        
            Delivery Format:
        
        
            Digital Download (PDF, ZIP, RAR, or EXE)
        
     
    
        
            Accessibility:
        
        
            Readable on PC & MAC (Windows 97, 2000, Me, XP, Vista, 7, 10), iPad, Hard Disc
        
     
    
        
            Printing Options:
        
        
            Printable on any computer and printer, no restrictions
        
     
 
    
    
    
        
            Engine Mechanical:
        
        
            Engine disassembly, assembly, servicing individual components, detailed engine component breakdowns, engine rebuild procedures
        
     
    
        
            Engine Electrical:
        
        
            Electrical troubleshooting, wiring diagrams
        
     
    
        
            Drivetrain:
        
        
            Transmission (implied by workshop manual scope), power delivery components
        
     
    
        
            Chassis Suspension:
        
        
            Frame, suspension systems, swingarm, linkage (implied)
        
     
    
        
            Brakes:
        
        
            Brake system maintenance and repair (implied)
        
     
    
        
            Fuel System:
        
        
            Fuel delivery and carburetion/injection systems (implied)
        
     
    
        
            Cooling System:
        
        
            Radiator, coolant, fan (if applicable) maintenance and repair (implied)
        
     
    
        
            Exhaust System:
        
        
            Exhaust components and service (implied)
        
     
    
        
            Bodywork Trim:
        
        
            Fairings, plastics, seat, controls (implied)
        
     
    
    
        
            Maintenance:
        
        
            Periodic maintenance schedule, routine servicing, preventative maintenance
        
     
    
        
            Troubleshooting:
        
        
            Trouble shooting guides, identifying and fixing problems
        
     
    
        
            Repair:
        
        
            Step-by-step repair instructions, component replacement, diagnostics
        
     
    
        
            Restoration:
        
        
            Restore, rebuild procedures
        
     
    
        
            Diagnostics:
        
        
            Diagnostic procedures for various systems
        
     
    
        
            Technical Specifications:
        
        
            Technical specifications, torque values, fluid capacities, clearances
        
     
    
    
        
            Depth:
        
        
            Comprehensive (covers repair, service, restore, maintain, rebuild, diagnose)
        
     
    
        
            Illustrations:
        
        
            Illustrated with clear step-by-step instructions, zoomable illustrations, exploded views, component breakdowns
        
     
    
        
            Target Audience:
        
        
            Professional technicians, mechanics, and DIY individuals
        
     
 
    
    
    
        
            Format:
        
        
            PDF, ZIP, RAR, EXE
        
     
    
        
            File Size:
        
        
            Potentially very large, up to 5GB
        
     
    
    
        
            Print Quality:
        
        
            High quality, suitable for printing
        
     
    
    
        
            Binding:
        
        
            Not applicable (Digital Download)
        
     
    
    
        
            Paper Type:
        
        
            Not applicable (Digital Download)
        
     
    
    
        
            PDF Reader:
        
        
            Standard PDF reader required
        
     
    
        
            Unzipping Software:
        
        
            WinZip or WinRAR (free versions available) for zipped files
        
     
 
    
    
    
        
            Engine Types:
        
        
            Single-cylinder, four-stroke engines (typical for these KTM models, specific variants detailed in manual)
        
     
    
    
        
            Displacement Range:
        
        
            250cc, 400cc, 450cc, 520cc, 525cc, 540cc, 560cc, 610cc (approximate based on model names)
        
     
    
        
            Horsepower Torque:
        
        
            Detailed specifications and ranges for each engine displacement are expected within the manual.
        
     
    
    
        
            Fuel Delivery:
        
        
            Carburetor (likely for early models) or Fuel Injection (later models, depending on specific variant). Manual will detail specific systems.
        
     
    
    
        
            Ignition Type:
        
        
            Electronic ignition systems (details within manual)
        
     
    
    
        
            Cooling Type:
        
        
            Liquid-cooled (typical for these KTM models, confirmed in manual)
        
     
 
    
    
    
        
            Transmission Type:
        
        
            5-speed or 6-speed manual transmission (typical for KTM off-road models, manual will specify for each model)
        
     
    
    
        
            Optional Transmissions:
        
        
            Not applicable for these performance-oriented models
        
     
    
    
        
            Clutch Type:
        
        
            Hydraulically operated multi-disc wet clutch (standard for KTM)
        
     
    
        
            Gear Ratios:
        
        
            Specific gear ratios for each model and transmission option will be detailed in the manual.
        
     
    
    
        
            Transmission Oil Type:
        
        
            Specific KTM recommended transmission oil or equivalent high-quality motorcycle gearbox oil will be specified in the manual.
        
     
 
    
    
    
        
            Overall Dimensions:
        
        
            Varies significantly by model (EXC, SX, MXC, XC, SMR). Manual provides detailed specifications.
        
     
    
    
        
            Dry Weight Range:
        
        
            Approximate dry weight range for these models is typically between 100-120 kg (220-265 lbs), but exact figures are model-specific and found in the manual.
        
     
    
        
            Wet Weight:
        
        
            Wet weight figures will be provided in the manual.
        
     
    
        
            Payload Capacity:
        
        
            Not a primary specification for these types of motorcycles.
        
     
 
    
    
    
        
            Crash Test Results:
        
        
            Not applicable in the traditional automotive sense for off-road motorcycles.
        
     
    
    
        
            Braking System:
        
        
            High-performance hydraulic disc brakes (front and rear) - detailed specifications in manual.
        
     
    
        
            Lighting:
        
        
            Headlight, taillight, brake light (may vary by model and regulations).
        
     
    
    
        
            Frame Construction:
        
        
            High-strength Chromoly steel or aluminum frame (depending on model variant, details in manual).
        
     
    
        
            Ergonomics:
        
        
            Designed for off-road riding control and rider positioning.
        
     
 
    
    
    
        
            Infotainment Systems:
        
        
            None (These are performance-focused off-road motorcycles with minimal electronic amenities).
        
     
    
    
        
            Assistance Features:
        
        
            None (Focus is on rider control and mechanical performance).
        
     
    
    
        
            Connectivity Features:
        
        
            None.
        
     
    
    
        
            ECU Capabilities:
        
        
            Basic engine control for fuel injection models (if equipped). The manual will cover diagnostic codes and adjustments.
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Detailed intervals for engine oil and filter changes will be provided in the manual, typically based on operating hours for competition use or mileage for general use.
        
     
    
        
            Air Filter Cleaning:
        
        
            Frequent cleaning/replacement is crucial for off-road riding; specific intervals in the manual.
        
     
    
        
            Spark Plug Replacement:
        
        
            Specific replacement intervals will be listed in the manual.
        
     
    
        
            Valve Clearance Check:
        
        
            Regular checks and adjustments are critical for engine health; specific intervals in the manual.
        
     
    
    
        
            Engine Oil Type:
        
        
            KTM recommends specific grades of synthetic or semi-synthetic motorcycle engine oil. The manual will specify viscosity and API ratings (e.g., SAE 10W-50, API SG or higher).
        
     
    
        
            Coolant Type:
        
        
            High-quality motorcycle coolant (e.g., ethylene glycol based with corrosion inhibitors) will be specified.
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 4 or DOT 5.1 brake fluid typically specified for KTM hydraulic systems.
        
     
    
    
        
            Common Wear Items:
        
        
            As with most off-road bikes of this era, wear items like clutch plates, brake pads, chain and sprockets, and wheel bearings are common maintenance points. Specific component lifespan guidance will be in the manual.
        
     
    
        
            Engine Specific Considerations:
        
        
            Early LC4 engines (found in 400-610cc models) are known for their torque and longevity with proper maintenance. Carburetor tuning and jetting can be important for optimal performance in varying conditions. Engine decompression mechanisms may require adjustment/service.
        
     
    
    
        
            Importance:
        
        
            Crucial for off-road competition and sustained reliability. The manual provides the roadmap for this.
        
     
 
    
    
    
        
            Heritage:
        
        
            KTM, an Austrian manufacturer, has a strong heritage in off-road racing (motocross, enduro, rally) with a reputation for performance and 'Ready to Race' philosophy.
        
     
    
    
        
            Evolution:
        
        
            These models represent a significant period of development for KTM's four-stroke off-road line, with engine and chassis updates occurring throughout the 2000-2007 period. The SX, EXC, MXC, and XC designations reflect different intended uses (motocross, enduro, cross-country).
        
     
    
    
        
            Manufacturing Location:
        
        
            Austria
        
     
    
        
            Market Segment:
        
        
            Performance off-road motorcycles, including motocross, enduro, and cross-country competition.
        
     
 
    
    
    
        
            Industry Acclaim:
        
        
            KTM motorcycles from this era are highly regarded in their respective racing disciplines for performance and capability. Specific awards are difficult to pinpoint without model-specific historical data.
        
     
    
    
        
            Customer Satisfaction:
        
        
            Generally high among enthusiasts due to their performance and durability when properly maintained. The manual is key to achieving this.