2001-2006 Yamaha YZ250L(N)/LC Service Manual

Covers 2001-2006 Yamaha YZ250L(N)/LC models with procedures for engine, chassis, electrical systems, and tuning. YM-1305. PDF Repository.

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Document Details

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Document Number / Seller:
23975 / Rebecca Smith
File Size:
82.16 MB
File Type:
ZIP
Language:
English, France, German, Italian, multi-language
Printable:
Yes
Category:
Motorbike
Last updated / verified
Jan 28, 2026

Models Covered & Key Technical Specifications

Yamaha YZ250L(N)/LC (5MW) - 2001-2006 Detailed Directory of Essential Specifications | Series YZ250L(N)/LC Edition

  • Certified Maximum Resolution: 249 cm³ (8.76 lmp oz, 8.42 US oz) indicates the engine's total displacement.
  • Designated Assembly Torques: 75 Nm (7.5 m•kg, 54 ft•lb) sets the torque for the clutch boss.
  • Defined Capacity Limits: For the 125cc class, 88 kg (194 lb) corresponds to the minimum dry weight standards.
  • Key Primary Specs: 100 kPa (1.0 kg/cm², 15 psi) defines the standard tire pressure.
  • Primary Baseline Values: 0.75 L (0.66 Imp qt, 0.79 US qt) dictates the periodic oil change volume.
  • Baseline Specifications: 40~50 mm (1.6~2.0 in) dictates the acceptable drive chain slack.

Professional Workshop Service Manual & Technical Specifications

Yamaha YZ250L(N)/LC (5MW1/5MW2) 2001-2006 Service Manual

This comprehensive service manual is designed for the 2001-2006 Yamaha YZ250L(N)/LC models, offering in-depth guidance for all aspects of maintenance, repair, and troubleshooting. It serves as an essential resource for owners and technicians alike, ensuring the longevity and optimal performance of the motorcycle.

Subsystem-Focus: Original Components | Technical-Benchmarks: Baseline Diagnostics | Subsystem-Focus: Integrated Systems

Integrated-Framework Baseline Architecture
Design Data: 125 cc displacement provides the core engine displacement specification Parameters. Nominal Capacity: 0.75 L defines the periodic oil change volume Requirements. Calibrated Spacing: For 125cc, 88 kg (194 lb) establishes the minimum dry weight Metric.
Documented Dimensional Tolerance: 100 kPa (1.0 kg/cm2, 15 psi) specifies the standard tire pressure Standards. Principal Velocity Specs: 249 cm3 signifies the engine's total displacement Value. Key Gap Specs: 40~50 mm (1.6~2.0 in) denotes the acceptable drive chain slack Metrics.

This manual provides detailed procedures for maintaining and repairing the Yamaha YZ250L(N)/LC. It includes in-depth coverage of engine systems, chassis components, electrical systems, and suspension tuning. The documentation ensures that users can confidently perform all necessary service operations, from routine maintenance to complex repairs. OEM guidelines are included for all procedures, covering engine, chassis, and electrical systems. Transmission service information covers gear ratios, operation, and related components. Torque specifications are provided for critical fasteners to ensure proper bolt stretch prevention and reliable assembly.

FAQ

What are the **proper** clearance measurements for the YZ250L(N)/LC? keyboard_arrow_down

100 kPa (1.0 kg/cm2, 15 psi) is the standard tire pressure specification for both front and rear tires. For the drive chain, a slack of 40-50 mm (1.6-2.0 in) is considered proper.

Specify the **standard** torque specifications for engine mounting. keyboard_arrow_down

For engine mounting, the frame to engine bolts require 69 Nm (6.9 m•kg, 50 ft•lb), the engine and frame (front) bolts require 69 Nm (6.9 m•kg, 50 ft•lb), the engine and frame (upper) bolts require 69 Nm (6.9 m•kg, 50 ft•lb), and the engine and frame (lower) bolts require 69 Nm (6.9 m•kg, 50 ft•lb).

What is the **necessary** safety precautions when working with the fuel system? keyboard_arrow_down

Ensure the fuel tank is securely mounted and the fuel cock is in the "OFF" position. If the fuel tank is tilted, fuel may leak from the carburetor or fuel tank. Avoid refueling near open flames or while smoking. Always turn off the engine while refueling.

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Reviews (5)

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The email support was fantastic. They answered my queries promptly, and the manual itself is a gem for any YZ250 owner!
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Downloaded it easily and the manual is well-organized. The troubleshooting section saved me a lot of time!
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This manual is incredibly detailed and covers everything I need for my bike. The download process was smooth, and I received the link in no time!
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Rated 4 out of 5 stars
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I love how thorough this manual is. I had a question about valve adjustments, and their support team responded quickly with helpful info!