Yamaha YZ125(P)/LC 2-Stroke Service Manual (561 P.)

Full service documentation for YZ125(P)/LC addressing engine, chassis, electrical systems plus diagnostic flowcharts. Technical reference 5NY-28199-30.

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Document Details

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Document Number / Seller:
23509 / Amy Ramirez
File Size:
10.99 MB
File Type:
PDF
Language:
English, Spanish, German, French
Pages:
561
Printable:
Yes
Category:
Bike
Last updated / verified
May 1, 2025

Models Covered & Key Technical Specifications

Yamaha YZ125(P)/LC — 2001

Technical Service Archive | YZ125 Series Repository.

  • Reference Volume Data is specified as 124 cm³ Specifications
  • Integral Charge Quantity indicates 8.0 L Requirements
  • General End Play is configured at 0.95 L Threshold
  • Certified Cooling Specs is measured at 54 × 54.5 mm Logic
  • Factory Mass Specs delivers 0.65 L Mapping
  • Established Twist Specifications is designed for 95.0 kg Configuration

Professional Workshop Service Manual & Technical Specifications

Technical Service Manual

Application-Range | Engineering-Metrics | Product-Line

Assessment-Element Diagnostic-Logic Architecture
Engine & Transmission Systems Performance specification data included Mechanical subsystem documentation
Suspension & Steering Components Geometry and adjustment reference materials Structural assembly guidance
Brake System Documentation Fluid specifications and component details Hydraulic system schematics
Fuel & Ignition Systems Operating parameter references Electrical circuit layouts
Maintenance & Service Intervals Preventive care documentation Procedural overview structure

START_POOL Summary: The manual provides comprehensive technical documentation for the Yamaha YZ125(P)/LC 2-stroke dirt bike platform. This service resource contains detailed system overviews, technical specifications, and component-level documentation across all major vehicle systems including engine architecture, transmission design, suspension geometry, and brake hydraulics.

Document Contents Overview:

The manual documents steering system architecture and front suspension geometry specifications. Included are component identification guides and structural assembly documentation for the front end assembly package.

The suspension system section covers rear shock specifications, linkage geometry data, and spring rate reference materials. The document includes detailed component diagrams and assembly relationship documentation for the complete suspension platform.

Brake system documentation encompasses hydraulic circuit layouts, fluid specification requirements, and component performance data. The manual provides detailed brake pad material specifications and rotor thickness reference information.

The drivetrain section includes engine specification data, transmission gear ratio documentation, and clutch system component details. The document covers engine displacement, compression ratio data, and spark plug specification information.

Assembly documentation is organized by component group, with detailed parts identification and relationship diagrams. The manual provides exploded view illustrations and assembly sequence overview materials for major mechanical assemblies.

Hydraulic system documentation covers fluid type specifications, pressure range data, and component material requirements. The manual includes detailed circuit diagrams and component integration specifications.

The fuel system section documents carburetor specification data, fuel line routing diagrams, and fuel specification requirements. The document includes air filter element specifications and intake system component details.

Service and inspection documentation covers maintenance interval reference materials and inspection procedure overview guides. The manual provides specification comparison tables and component service life reference data.

Maintenance documentation is organized by service interval category, with detailed parts lists and specification reference materials. The document includes tool requirement overviews and maintenance scheduling guidance.

FAQ

Calculate the **precise** coolant capacity for the YZ125(P)/LC cooling system? keyboard_arrow_down

0.95 L represents the total coolant capacity required for the Yamaha YZ125(P)/LC radiator and cooling system, with operating pressure maintained between 95-125 kPa via the radiator pressure cap.

What values **proper** for Yamalube 4 oil viscosity in this motorcycle? keyboard_arrow_down

SAE 10W-30 is the specified viscosity grade for Yamalube 4 motor oil used in the YZ125(P)/LC engine, ensuring proper lubrication across operating temperature ranges while maintaining optimal film strength.

Assess the **standard** transmission oil capacity during periodic maintenance intervals? keyboard_arrow_down

0.65 L is the periodic transmission oil capacity for the YZ125(P)/LC gearbox during scheduled maintenance service intervals, with specific torque specifications for fasteners ranging from 10-40 Nm depending on component location and application per the service manual sections covering drivetrain maintenance procedures.

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Reviews (2)

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New
The Yamaha YZ125LC service manual is incredibly comprehensive. It covers everything from basic maintenance to complex repairs. I appreciate how quickly I received my download link via email. The support team was also very responsive to my questions. Definitely worth the investment!
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New
This manual is a must-have for anyone who owns a Yamaha YZ125LC. The detailed maintenance instructions are easy to follow, and the troubleshooting section has already saved me time and money. The download process was quick and smooth! Highly recommend!