2000 Yamaha YZ125(M)/LC Service Manual

Diagnostics, repair procedures, and maintenance data for YZ125(M)/LC. Includes exploded views, part numbers, and detailed specifications. YM-01135

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Document Details

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Document Number / Seller:
24730 / Mark Morales
File Size:
15.22 MB
File Type:
ZIP
Language:
English, French, German, Spanish
Pages:
176
Printable:
Yes
Category:
Bike
Last updated / verified
Dec 28, 2025

Models Covered & Key Technical Specifications

Yamaha YZ125(M)/LC Service Manual: 2000 Yamaha YZ125(M)/LC Owner's Service Manual, competition motocross PDF Powertrain-Manual

Technical Vault Guide | Series Portfolio.

  • Designated End Play: 1.0 mm (0.04 in) establishes the critical measurement limit.
  • Primary Power Framework: For optimal operation, 1.0 Nm (0.7 ft-lb) signifies the essential torque data.
  • Advanced Ambient Limits: The formatter board requires 20 C (68°F) for standard operation temperature.
  • Defined Dimensional Limits: The formatter board requires 14 Nm (10.1 ft-lb) for standard operation torque.
  • Key Torque Data: 50 Nm -- signifies the maximum torque for cylinder head nuts.
  • Essential Measurement Bounds: For optimal operation, 1.0 mm (0.04 in) defines the piston clearance limit.

Professional Workshop Service Manual & Technical Specifications

Yamaha YZ125(M)/LC Service Manual: 2000 Yamaha YZ125(M)/LC Owner's Service Manual, competition motocross PDF Powertrain-Manual

Operational-Framework: YZ125(M)/LC, 2000 / Unit-Designations: Bike / Motocross Logic // Model-Specs: Technical documentation, Part numbers, Diagrams.

Performance-Element Baseline Logic
Engine Specifications 124 cm³ 4.19 US oz
Ignition Timing 32°/3000 r/min N/A
Primary Gear Ratio 64/19 3.368
Fuel Tank Capacity 8.0 L 2.11 US gal
Weight (Wet) 95.5 kg 210.5 lb
Tire Pressure (Front) 100 kPa 15 psi

Following OEM groupings, the manual includes sections on General Information, Specifications, Regular Inspection and Adjustments, Engine, Chassis, Electrical, and Tuning. Procedures are detailed with clear instructions and diagrams. Component locations are identified for ease of access. Service intervals are documented to ensure longevity. Calibration requirements are specified for optimal performance. Electrical system documentation covers wiring diagrams and ignition system details.

Service intervals are documented for

various components to ensure the longevity and peak performance of your YZ125(M)/LC.

Component locations are identified for

ease of access, aiding in quick and efficient maintenance.

Service procedures are documented for

all major systems, including engine, chassis, and electrical.

Calibration requirements are specified for

key components to maintain optimal operating parameters.

Electrical system documentation covers

comprehensive wiring diagrams and ignition system schematics for troubleshooting.

The manual includes torque specifications for critical fasteners to ensure proper assembly and structural integrity, facilitating cyclic stress resistance.

FAQ

Calculate the **precise** pressure specifications for the coolant system. keyboard_arrow_down

95-125 kPa (0.95–1.25 kg/cm², 13.5–17.8 psi) is the standard pressure for the cooling system.

What values ensure **proper** assembly sequence for the cylinder head? keyboard_arrow_down

20 Nm (2.0 m•kg, 14 ft•lb) is the specified torque for the cylinder head bolts.

Assess the **standard** service interval parameters for the brake fluid. keyboard_arrow_down

DOT #4 is the recommended brake fluid type, with replacement recommended as needed or every two years as per page 149+ data.

What components are **necessary** for the ignition system architecture? keyboard_arrow_down

The ignition system comprises a CDI magneto, a spark plug, and a coil.

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Reviews (3)

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The manual is incredibly detailed and easy to follow. Downloading was a breeze, and I received the link almost instantly! Highly recommend for any YZ125 owner.
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This service manual has everything you need for the YZ125. Customer support was prompt and very helpful when I had questions. Well worth the purchase!
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Rated 4 out of 5 stars