2005–2010 KTM 250 SX-F, EXC-F, XC-F, SXS-F Factory Service Manual (P/N 3.206.063-E)

This 781-page PDF set covers the carbureted KTM 250 four-stroke family from 2005 through 2010, including the 250 SX-F, EXC-F, EXC-F Six Days, XCF-W, XC-F, and applicable SXS-F versions. It combines the engine repair manual with dedicated WP fork and shock absorber workshop material plus the 2009 and 2010 owner's manuals. KTM states that the repair sections assume qualified, professionally trained mechanics; the internal engine and pressurized suspension procedures are therefore suited to experienced technicians with the specified service tools, not first-time rebuilders.

• Model and revision identification: The loose-leaf engine manual maps engine-number first digits 5/6, 7/8, and 9/0 to the 2005/06, 2007/08, and 2009/10 update groups, with year- and market-specific specifications and wiring coverage.
• Complete engine repair: Covers engine removal and installation, crankcase separation, crankshaft and transmission service, oil-pump inspection, cylinder-head and valve work, clutch and shift-system repair, cam timing, valve-clearance checks, and final reassembly.
• Carburetor and electrical diagnosis: Details the Keihin FCR-MX 39, including accelerator-pump, float, jet-needle, hot-start, idle, and throttle-position-sensor work, along with CDI, ignition-coil, stator, pulse-generator, starter, relay, charging, and current-loss tests.
• WP shock absorber overhaul: Includes 5018 PDS MCC/DCC and 5018 DCC/SXS/SMR exploded views, tube and piston-rod service, DCC mechanism work, seal and bushing inspection, vacuum filling, nitrogen charging, and spring-preload setup.
• WP fork overhaul: Covers 4860 MXMA/PA and 4860 MXMA closed-cartridge forks, with cartridge removal, inner- and outer-tube inspection, DU-bush and seal service, rebound/compression assemblies, bleeding, pressure charging, and oil filling.
• Chassis and owner-service coverage: The 2009/2010 owner's manuals add suspension setup, steering-head, chain, brake, wheel, cooling, hydraulic-clutch, air-filter, battery, lighting, oil-service, maintenance-schedule, and model-specific wiring information.

Included Publications

The 781-page PDF contains the 250-F engine repair manual P/N 3.206.063-E (189 pages); WP 5018 DCC/SXS/SMR repair manual P/N 3.211.208-E (70 pages); WP 5018 PDS 2003 workshop manual (99 pages); WP 4860 MXMA closed-cartridge fork repair manual P/N 3.211.199-E (118 pages); WP 4860 MXMA 2003 workshop manual (51 pages); 2009 Owner's Manual 3211348en (125 pages); and 2010 Owner's Manual 3211465en (125 pages). Four set and divider pages complete the file.

Model-Year and Configuration Detail

The June 2009 engine-manual update incorporates the original 2005/06 manual and the 2007/08 update, then adds 2009/10 technical data, torque information, maintenance schedules, and wiring diagrams. Coverage is not a blanket claim that every model was sold in every year: SXS-F engine data is listed for 2006/07, XC-F appears in the 2007-2009 technical sections, and the 2010 engine/chassis data is organized for SX-F, XCF-W, and EXC-F. The 2009 owner's manual includes XC-F USA and XCF-W USA/ZA, while the 2010 volume lists XCF-W ZA and does not list XC-F. The wiring section goes further by separating USA, EU, Australian, South African, and Six Days configurations where applicable.

This is specifically carburetor-era documentation. Fuel-system repair centers on the FCR-MX 39 rather than later EFI hardware, while transmission tables distinguish the SX-F/XC-F ratios from the wide-ratio XCF-W/EXC-F setup. Year-specific chassis data identifies the applicable WP 4860 fork and PDS 5018 shock configurations before adjustment or overhaul information is selected.

Repair Depth and Technical Reference

The engine chapters move from removal through complete teardown, component inspection, and assembly. They address the crankshaft and bearings, Nikasil-coated cylinder and piston, twin-cam valve train, automatic decompression mechanism, timing drive and tensioner, dual oil pumps, wet clutch, kickstarter, shift mechanism, and mainshaft/countershaft assemblies. The tool list identifies the engine holder 770.29.002.000, magneto extractor 580.12.009.000, clutch holder 503.29.003.000, and piston-pin lock-ring tool 770.29.036.000; the suspension sections specify dedicated vacuum, nitrogen-charging, seal, bushing, and clamping tools. Separate tables provide mounting clearances, wear limits, component-specific tightening torques, lubricants, capacities, carburetor settings, suspension settings, and electrical test values without reducing the manual to isolated specifications.

Useful reference drawings include the engine oil-circuit layout, 2005/06 SX-F CDI schematic, year- and market-specific EXC-F/XCF-W wiring diagrams, PDS 5018 DCC and SXS/SMR exploded views, and 4860 closed-cartridge fork exploded views. The electrical chapter also gives peak-voltage test coverage, static ignition and generator values, wiring routes, cable colors, and throttle-position-sensor checks.

Two engine-assembly cautions show the level of factory detail. The case halves must not be pried apart with a screwdriver or pulled together with the case screws, since those shortcuts can damage the sealing surfaces or assembled components. The automatic timing-chain tensioner must also be correctly reset and released after installation; otherwise the chain can skip on startup and cause engine damage. Fork and shock work involves stored gas pressure and dedicated filling equipment, so those procedures require the listed WP tools and appropriate suspension-service training.