2004–2005 Kawasaki KX250F Factory Service Manual (P/N 99924-1324-02)

• Factory model application: Covers the 2004 Kawasaki KX250F, model KX250-N1, beginning with frame numbers JKAKXMNC□4A000001 (the boxed position is a variable digit) or JKAKX250NNA000001. No separate 2005 model supplement is included.
• Powertrain repair: Documents engine removal and installation, compression testing, camshaft and cam-chain timing work, valve-clearance service, cylinder-head and valve repair, piston/cylinder inspection, clutch and kickstarter service, crankcase separation, crankshaft work, and transmission/shift-mechanism repair.
• Fuel, cooling, and lubrication work: Covers Keihin FCR37 service fuel-level inspection and adjustment, carburetor removal and internal service, throttle and hot-start controls, cooling-system pressure testing and air bleeding, water-pump and radiator repair, oil-pump inspection, oil-screen service, and oil-pressure testing.
• Chassis, suspension, and brakes: Includes wheel, tire, hub-bearing, chain, and sprocket procedures; brake-fluid changing and bleeding; caliper and master-cylinder overhaul; Kayaba fork oil, seal, and bushing service; rear-shock oil service; and Uni-Trak, swingarm, tie-rod, and rocker-arm repair.
• Electrical diagnosis and shop references: Provides the AC-CDI wiring diagram, magneto and stator tests, ignition-timing checks, ignition-coil and CDI diagnosis, throttle-sensor voltage checks and position adjustment, engine-stop and neutral-switch testing, symptom-based troubleshooting, cable/wire/hose routing, torque tables, and inspection limits.
• Document set: A 369-page PDF set consisting of the 356-page Kawasaki OEM Motorcycle Service Manual, P/N 99924-1324-02, Second Edition (1), Jan. 16, 2004, plus a 13-page 2004 Model Information factory brief dated June 24, 2003.

Machine Configuration and Scope

The manual is written for the KX250-N1 launch configuration: a liquid-cooled DOHC four-valve single with semi-dry-sump lubrication, Keihin FCR37 carburetion, digital AC-CDI ignition with a throttle-position sensor, a five-speed transmission, an inverted Kayaba fork, and New Uni-Trak rear suspension. The supplementary model-information document identifies marketing code KX250N and adds factory engineering detail on the automatic decompression and hot-start systems, the ignition map, chassis and suspension changes, and optional rotors, carburetor-setting parts, sprockets, front-wheel equipment, and suspension springs.

This is a service and diagnostic publication rather than a parts catalog. Its exploded views support assembly work with numbered component callouts plus torque, lubrication, locking-agent, sealant, and replace-on-disassembly markings. Kawasaki directs replacement-part number lookup to a separate Parts Catalog.

Workshop Depth

Engine coverage reaches well beyond routine maintenance. The top-end chapters address cam timing, the non-return chain tensioner, cylinder compression, valve-guide and valve-seat work, piston and ring inspection, and exhaust service. Lower-end coverage includes matched crankcase halves, crankshaft removal and pressing operations, connecting-rod inspection, bearing and oil-seal replacement, transmission-shaft disassembly, gear and shift-fork inspection, and final operational checks.

The manual names the required Kawasaki service equipment throughout. Representative examples include Fuel Level Gauge 57001-122, Crankcase Splitting Tool Assembly 57001-1362, Fork Cylinder Holder 57001-1573, and Hand Tester 57001-1394.

Specification sections provide component-specific torque and locking-agent data, engine-oil and coolant capacities, carburetor settings, valve and connecting-rod clearances, transmission ratios, wear limits, oil-pressure test data, suspension adjustment information, brake inspection limits, and electrical test values.

Reference graphics include the engine lubrication system chart, AC-CDI wiring diagram, cable/wire/hose routing views, and exploded assemblies for the FCR37 carburetor, crankshaft/transmission, and front fork and Uni-Trak suspension. The appendix adds fault isolation for starting, fuel mixture, overheating, clutch and shifting faults, abnormal engine or drivetrain noise, handling problems, and weak braking.

Build-Specific Repair Notes

The crankcase assembly section identifies a separate bolt-tightening sequence for engine No. KX250NE014233 and later, a useful build break when the lower end has been opened. It also warns that the cam-chain tensioner is a non-return design; improper partial removal or turning the crankshaft with the tensioner out can disturb timing and damage the valve train. The crankcase halves are factory-machined as a matched set, and the bearing bosses must be supported during press work to avoid case damage.

Rear-shock oil service involves a pressurized nitrogen reservoir, and engine removal requires stable frame support because the swingarm pivot shaft is withdrawn. Brake, fuel, coolant, and ignition work also demand proper protective equipment; high-pressure shock or unfamiliar internal-engine repair should be handled by a qualified technician.