Yamaha YZ250(S)/LC 1999-2006 Service Manual (585 P.)
YZ250(S)/LC service documentation covering complete maintenance procedures. Covers engine tuning, chassis adjustments and electrical diagnostics. PN 5XF-28199-30
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Sample pages from the Yamaha YZ250(S)/LC 1999-2006 Service Manual (585 P.) manual
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Yamaha Models Covered & Key Technical Specifications
Models: Yamaha YZ250(S)/LC
Sub-models / Variants: USA, CDN, AUS, NZ, EUROPE, ZA
Build Years: 1999–2006
Technical Data:
- Engine: Liquid-cooled 2-stroke, single-cylinder
- Engine Displacement: 249 cm³
- Transmission: 5-speed, constant-mesh
- Bore × Stroke: 66.4 × 72 mm
- Fuel Tank Capacity: 8.0 L
- Coolant Capacity: 1.20 L
- Ignition System: CDI magneto
Yamaha Manual Features & Content Preview
1999–2006 Yamaha YZ250(S)/LC Service Documentation
- Covers 1999–2006 Yamaha YZ250(S) and YZ250LC motocross machines, including 5XF1, 5XF2, and 5XF4 regional variants
- Original Yamaha publication P/N 5XF-28199-30
- Contains 47 detailed exploded-view diagrams, 8 comprehensive torque-specification tables, and 2 complete wiring schematics
- Delivered as a direct download the moment payment clears
- Print resolution preserves exploded-view detail
- This 585-page manual provides the factory-authorized procedures required to maintain the 249 cm³ two-stroke engine and chassis geometry throughout the 1999–2006 production cycle
Structural and Mechanical Scope
This factory manual details maintenance and inspection procedures for the YZ250 liquid-cooled platform. Chapters organize technical content by system, covering general information, engine maintenance, and chassis setup. The documentation provides a complete reference for engine internals, including cylinder head, piston, crankshaft, and transmission assemblies. It also documents the YPVS power valve system and CDI magneto components, essential for tuning this racing machine.
Technical Specification Highlights
Detailed specifications define the mechanical limits and fluid capacities for performance maintenance. The combustion chamber capacity is documented at 21.0 cm³ for North American and Australian markets, while the European variant specifies 21.5 cm³. Cylinder head bolt torque is set at 25 Nm (18 ft-lb) in the assembly data. Intake valve clearance and reed valve stopper heights are listed for fine-tuning the intake tract. The coolant system capacity for the YZ250 platform is documented at 1.20 liters. Bore and stroke measurements are standardized at 66.4 mm by 72 mm for mechanical tolerance. An official 585-page Yamaha OEM workshop manual covering the 1999–2006 YZ250(S)/LC, documenting engine, chassis, electrical, and fuel-system specifications for these competition-grade motocross builds.
Document Reference: Yamaha publication P/N 5XF-28199-30
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