2000-2007 KTM 250 EXC, 400 SX, 450 MXC, 525 SX, 610 RACING Service Manual

Covering 2000-2007 KTM 250 EXC, 400 SX, 450 MXC, 525 SX, and 610 RACING models with complete service procedures for engine, electrical, and suspension systems. Ref: 3.206.043-E

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Document Details

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Document Number / Seller:
30995 / Nancy Robinson
File Size:
13.08 MB
File Type:
PDF
Language:
English
Printable:
Yes
Category:
Engines (Gasoline)
Last updated / verified
Sep 6, 2025

Models Covered & Key Technical Specifications

KTM 250 EXC, 400 SX, 450 MXC, 525 SX, 610 RACING (3.206.043-E) - 2000-2007

KTM 250 EXC / 400 SX / 450 MXC / 525 SX / 610 RACING (2000-2007) Service Manual | Repair-Dossier

  • Engine Specifications: 249.6 cc / 398 cc / 449 cc / 510 cc liquid-cooled single cylinder 4-stroke engines with balancer shaft provide robust power delivery.
  • Fuel Type: Unleaded premium gasoline with at least RON 95 is required for optimal performance.
  • Valve Clearance: Cold valve clearance for intake and exhaust is specified at 0.12 mm for consistent operation.
  • Ignition System: Features contactless DC-CDI ignition with digital advanced system by KOKUSAN for reliable ignition.
  • Generator Output: Equipped with a 12V 40W generator to supply power for all electrical systems.
  • Starting Equipment: Includes both kickstarter and electric starter for versatile starting options.

Professional Workshop Service Manual & Technical Specifications

Professional Diagnostic Calibration Manual: Engines (Gasoline) 2000-2007 KTM 250 EXC, 400 SX, 450 MXC, 525 SX, 610 RACING - Pro Guide to Engine, Electrical & Suspension Service Service-Dossier

Engine Specifications: 249.6 cc / 398 cc / 449 cc / 510 cc | Cooling System: Liquid cooled, permanent rotation of cooling liquid through mechanically driven water pump | Ignition: Contactless DC-CDI ignition with digital advanced system by KOKUSAN

Integrated-Framework System-Path Calibration-Standards
Engine Displacement Bore/Stroke Valve Clearance (Cold)
Ignition System Generator Spark Plug Gap
Cooling System Primary Ratio Clutch Type

Major sections focus on the comprehensive repair procedures for the KTM 250-610 Racing series. OEM guidelines are included for engine, electrical, and suspension system maintenance and repair. Transmission service information covers all gears and related components for optimal performance. HVAC system procedures are included for ensuring proper cooling and lubrication. Torque specifications are documented for critical engine and chassis fasteners to ensure correct assembly. Parts identification is covered for all major components to assist with part replacement.

This manual details the complete disassembly and reassembly of the engine, including the crankshaft, transmission, clutch, and oil pump systems. Procedures for the ignition system, starting system, and electrical components are thoroughly explained. Suspension system servicing, including fork and shock absorber adjustments, is covered in detail. Troubleshooting guides are provided for common issues to help diagnose and resolve problems efficiently.

FAQ

What **essential** testing parameters are covered for engine diagnostics? keyboard_arrow_down

Engine diagnostics include checks for valve clearance and adjustment, engine oil levels, and spark plug condition. Specific tests for ignition coil resistance and generator output are also detailed.

Check the **correct** diagnostic procedures for the electrical system. keyboard_arrow_down

Electrical system diagnostics cover leakage inspection, battery charging, voltage regulator-rectifier checks, CDI unit function, stator, pulse generator, starter motor, and starter relay testing.

What does the **documented** fluid capacity requirements specify? keyboard_arrow_down

The manual specifies 1.25 liters of full synthetic engine oil (Motorex Power Synt 4T 10W/50) and 1.0 liter of cooling liquid with 40% antifreeze and 60% water, rated for temperatures down to -25° C.

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Reviews (5)

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Rated 5 out of 5 stars
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Had a question about the manual and got a response within hours. The support team is very professional!
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The manual is incredibly detailed and has everything I need to maintain my bike. The download process was smooth and I received the link immediately. Highly recommend!
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The step-by-step engine overhaul section is invaluable. The download link came quickly and I'm very satisfied!