2006 Yamaha YZ250(W)/W1 Service Manual

YZ250 technical guide covering diagnostics, clutch/transmission service, cooling system maintenance, and suspension tuning for competition motorcycles.

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Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Yamaha Models Covered & Key Technical Specifications

Models: Yamaha YZ250(W)/W1
Build Years: 2006
Technical Data:

  • Engine: Liquid cooled 2-stroke, single cylinder, 249 cm3
  • Transmission: Constant mesh 5-speed, wet multiple-disc clutch
  • Compression ratio: 9.2~10.9 : 1 (USA, CDN), 8.9~10.6 : 1 (EUROPE, AUS, NZ, ZA)
  • Fuel capacity: 8.0 L (2.11 US gal)
  • Coolant capacity: 1.20 L (1.27 US qt)
  • Suspension: Telescopic front fork, link type monocross rear suspension
Technical Specifications
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Document Number / Seller:
24348 / Amanda Martinez
File Size:
15.23 MB
File Type:
PDF
Language:
English, france, german, italian
Pages:
596
Printable:
Yes
Category:
Motorbike
Last updated / verified
Jan 18, 2026

Yamaha Manual Features & Content Preview

Inside the 2006 Yamaha YZ250(W)/W1 Service Manual

  • Built for owners and workshops servicing the 2006 Yamaha YZ250(W)/W1, covering the liquid-cooled 2-stroke 249 cm3 racing platform
  • Official Yamaha publication 1P8-28199-32, first edition May 2006
  • Contains detailed exploded-view diagrams for all engine and chassis assemblies, plus extensive maintenance specification tables for tuning
  • No shipping wait — the PDF is available immediately after purchase
  • Laid out for standard letter and A4 printing
  • This first edition serves as the definitive baseline documentation for the 2006 YZ250 racing model

Document Content Walkthrough

The 596-page document provides structured technical coverage divided into seven distinct chapters. The initial section defines machine identification, safety information, and basic fuel mixing protocols for the YZ250 series. Subsequent chapters detail comprehensive specifications, including maintenance limits, torque values, and electrical system diagnostics, as well as regular inspection procedures. The technical chapters cover engine disassembly, chassis adjustments, and specialized tuning procedures for the 5-speed constant-mesh transmission and YPVS governor.

Specification and Technical Data Preview

Maintenance data sections provide precise figures for assembly and inspection. Intake valve clearance is not applicable to this 2-stroke design, but piston-to-cylinder clearance is documented at 0.045–0.050 mm. The fuel system relies on a Keihin PWK38S carburetor with standard main jet #178 for USA/CDN models. Coolant capacity for the liquid cooling system is documented at 1.20 liters. Detailed torque tables are provided for every bolt, such as the cylinder head nut torque specified at 25 Nm. Users can reference what an OEM service publication covers to understand the organizational structure of this factory-level documentation. This 596-page Yamaha OEM service manual is designed for the 2006 YZ250(W)/W1, documenting engine, chassis, and electrical specifications essential for professional-level maintenance of this competition-use motorcycle.

Manual FAQ, Purchase & Download Details

Are there model code numbers provided in the document to assist with ordering spare parts for the 2006 Yamaha YZ250 series? keyboard_arrow_down

Manual lists model code numbers for specific versions of the Yamaha YZ250 including those designated for the USA, Europe, Australia, and New Zealand markets.

What kind of technical information is contained in the specification tables for the engine and chassis systems? keyboard_arrow_down

Specification tables include details on bore and stroke, compression ratios, fluid capacities for transmission and coolant, as well as tire and brake system specifications.

Does the manual include torque specifications for fasteners located on the engine and frame? keyboard_arrow_down

Yes, the manual contains extensive tightening torque tables that list specifications for components such as the cylinder head, crankcase, and various mounting bolts.

Are exploded diagrams provided to help with identifying parts during disassembly or assembly? keyboard_arrow_down

Manual features exploded diagrams at the beginning of each removal and disassembly section to assist in identifying parts and visualizing their assembly order.

Is the document available in multiple languages for international users? keyboard_arrow_down

Manual is presented in English, French, German, and Italian, providing coverage for users in various regions.

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