2001-2002 Yamaha YZ250(P)/LC, YZ250, YZ250P1 & YZ250LC Service Manual

250cc competition motocross machine service data — covers image formation, paper feed, and field-replaceable units. Publication 5NX-28199-30.

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Yamaha Models Covered & Key Technical Specifications

Models: YZ250, YZ250P1, YZ250LC, YZ250(P)
Sub-models / Variants: USA, CDN, AUS, NZ, ZA, EUROPE, 2-stroke, Liquid cooled
Build Years: 2001–2002
Serial Numbers: 5NX1, 5NX2, 5NX4
Technical Data:

  • Engine displacement: 249 cm3
  • Engine type: Liquid cooled 2-stroke single cylinder
  • Compression ratio: 9.1–10.6:1
  • Carburetor: PWK38S/KEIHIN
  • Transmission: Constant mesh 5-speed
  • Front suspension: Telescopic fork
  • Rear suspension: Swingarm (link type monocross)
  • Tire (front): 80/100-21 51M
  • Tire (rear): 110/90-19 62M
  • Coolant capacity: 1.20 L
Technical Specifications
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Document Number / Seller:
26139 / Emily Diaz
File Size:
15.16 MB
File Type:
PDF
Language:
English, Italian, German, French
Pages:
584
Printable:
Yes
Category:
Bike
Last updated / verified
Dec 26, 2025

Yamaha Manual Features & Content Preview

2001–2002 Yamaha YZ250 Technical Documentation

  • Covers 2001–2002 Yamaha YZ250(P), YZ250P1, and YZ250LC competition motocross machines, including liquid-cooled engine variants and specific regional configurations
  • Official Yamaha publication P/N 5NX-28199-30, first edition June 2001
  • Contains 4 detailed torque-check charts, 2 multi-language technical specification tables, and 17 maintenance procedure sections
  • File link appears in your order confirmation straight away
  • OCR text layer lets you jump to a torque spec by keyword
  • Suitable for printing individual sections for shop-floor use
  • This official 584-page manual is the factory reference used for the YZ250 P-series and LC-build motocross launch, providing all specialized engine and chassis tuning data.

Manual Content and Structure

The 2001–2002 Yamaha YZ250 service manual documents factory-recommended maintenance and inspection items across seven distinct chapters. This publication covers engine disassembly, top-end inspection, transmission, shift mechanism, and the YPVS governor system. Additionally, the text details chassis-specific service including steering, suspension, swingarm, and braking system maintenance, while providing electrical system wiring and component testing specifications.

Specification Highlights

This technical guide provides comprehensive torque settings for critical assemblies such as the primary drive gear, cylinder head studs, and steering ring nut. The manual defines coolant capacity at 1.20 L and documents transmission oil requirements. Understanding factory workshop documentation is essential when performing precision adjustments. Valve clearance for the reed valve is listed at 0.42 mm. The spark plug gap for the YZ250 is specified at 0.5–0.6 mm. The main jet specification for the PWK38S carburetor is #178 for most regions. This 584-page OEM manual covers the 2001–2002 Yamaha YZ250 competition motocross machines, documenting complete mechanical, chassis, and electrical specifications for the 5NX-series build.

Manual FAQ, Purchase & Download Details

Are the engine chapters included in this Yamaha YZ250 service manual? keyboard_arrow_down

Chapter listings indicate that the manual covers the engine, chassis, and electrical systems, including engine-related sections for inspection and technical references.

Does this manual document contain information on the publication 5NX-28199-30 edition? keyboard_arrow_down

Document is identified as the 1st Edition, published in June 2001, and carries the publication number 5NX-28199-30. It encompasses 584 pages of service data for the YZ250 series.

Can you list what system chapters and technical categories are featured in this service manual? keyboard_arrow_down

Document contains seven distinct chapters, including General Information, Specifications, Engine, Chassis, and Electrical sections. Each chapter includes reference materials like exploded views for components, torque specification tables, and maintenance intervals. The manual provides these resources to support the operation and maintenance of the competition motocross machine.

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