2007 Yamaha YZ250W Service Manual

2007 YZ250W troubleshooting and repair reference: diagnostics, removal sequences, and maintenance for engine, chassis, and electrical systems. Abe008

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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 YZ250W (2007)
Sub-models / Variants: YZ250W1 (USA, CDN), YZ250 (EUROPE, ZA), YZ250W (AUS, NZ)
Build Years: 2007
Technical Data:

  • Engine: Liquid-cooled 2-stroke single cylinder
  • Displacement: 249 cm3
  • Bore x Stroke: 66.4 x 72 mm
  • Transmission: Constant mesh 5-speed
  • Starting System: Kick starter
  • Ignition System: CDI magneto
  • Fuel System: PWK38S KEIHIN carburetor
  • Spark Plug Gap: 0.5–0.6 mm
  • Dry Weight: 96.0 kg (211.6 lb)
  • Transmission Oil Capacity: 0.75 L periodic / 0.80 L total
Technical Specifications
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Document Number / Seller:
28790 / Charles Jackson
File Size:
10.56 MB
File Type:
PDF
Language:
English
Pages:
270
Printable:
Yes
Category:
Motorbike
Last updated / verified
Feb 1, 2025

Yamaha Manual Features & Content Preview

2007 Yamaha YZ250W Technical Documentation

  • Covers 2007 Yamaha YZ250W and variants including YZ250W1 (USA/CDN) and YZ250 (EUROPE/ZA/AUS/NZ) with liquid-cooled 2-stroke engine configuration
  • Official Yamaha publication P/N EC000000, 2007 edition
  • Contains 270 pages with exploded-view diagrams for all assemblies, torque specification tables for fasteners, and cable routing illustrations
  • File downloads to your account within seconds of checkout
  • Re-download the file any time, no expiration
  • Full-text search finds any part number in seconds
  • Laid out for standard letter and A4 printing
  • This edition provides the precise factory settings for the 1P89, 1P8A, and 1P8C model codes, essential for matching fuel jetting and ignition timing to the specific regional build

Engine and Chassis Walkthrough

This factory publication provides documentation for the 2007 Yamaha YZ250W. The content spans seven chapters, beginning with general identifiers and special tool listings for proper maintenance and assembly. Engine coverage includes detailed disassembly, inspection, and assembly of the cylinder head, reed valve, clutch, crankcase, and YPVS governor. Chassis content focuses on suspension tuning for the monocross system, steering head service, brake system bleeding procedures, and transmission oil maintenance.

Specification and Tuning Data

Technical data sections provide engine and maintenance parameters. Combustion chamber capacity is 21.0 cm3 for USA/CDN models, while European models utilize 21.5 cm3. Torque values are cataloged across all fasteners; for instance, the spark plug is tightened to 20 Nm (14 ft-lb), and the steering shaft nut is torqued to 145 Nm (105 ft-lb). Electrical system references include source coil resistance ranges of 44–66 ohms and ignition timing of 0.18 mm B.T.D.C. Reference only — always consult a certified technician before performing service on this equipment.

An official 270-page Yamaha OEM workshop manual covering the 2007 Yamaha YZ250W, documenting engine, chassis, electrical, and fuel-delivery specifications for the international model variants.

Manual FAQ, Purchase & Download Details

Is the 2007 Yamaha YZ250W model series explicitly covered in this service manual? keyboard_arrow_down

Document is an official service manual published specifically for the 2007 Yamaha YZ250W. The contents and chapter structure are intended to preview information relevant to that specific motocross machine.

Can I view detailed exploded diagrams and parts illustrations for components such as the clutch and primary driven gear? keyboard_arrow_down

Manual includes comprehensive exploded diagrams at the start of disassembly sections to clearly illustrate part names, order of assembly, and component breakdowns.

Does this manual contain publication references or edition notes regarding the provided product data? keyboard_arrow_down

Document serves as a 270-page service resource that includes notes regarding product design advancements made at the time of printing. It is intended to be a permanent part of the machine, though users are advised that data may occasionally require consultation with a dealer due to potential model improvements. The manual content is organized into seven distinct chapters covering general information, specifications, inspections, and system-specific data.

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