2008 Yamaha YZ125X1 Owner's Service Manual
Diagnostic procedures and component service for your YZ125X1, covering engine, chassis, and electrical systems. Ref: LIT-11626-21-43
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Models Covered & Key Technical Specifications
Yamaha YZ125X1 (LIT-11626-21-43) – 2008. Original Directory | Volume.
- Engine Specifications: 124 cm3 is the standard displacement capacity for this motorcycle.
- Transmission Specifications: For optimal operation, 6-speed constant-mesh defines the gear ratio Framework.
- Chassis Specifications: The frame type is semi double cradle -- indicating robust construction Benchmarks.
- Front Suspension: The front fork requires 524 cm3 of Suspension oil "S1" for proper operation Sequences.
- Rear Suspension: The rear shock absorber has a spring rate of K=46.0 N/mm (4.70 kg/mm, 263.2 lb/in) Baseline.
- Brake System: Front and rear brakes utilize single disc brake configurations for reliable stopping Mapping.
Manual Description & Preview
Factory-Level Repair Electrical Manual: Yamaha YZ125X1 manual, 2008 PDF Hydraulic-Guide
| Operational-Framework: LIT-11626-21-43 // Calibration-Scope: Motorbike / Yamaha Logic // Operational-Framework: 124cc, liquid-cooled, 2-stroke. | Assessment-Element | Value | Calibration-Data |
|---|---|---|---|
| Engine Type | Liquid cooled 2-stroke, gasoline | Standard | |
| Cylinder Arrangement | Single cylinder, forward inclined | Standard | |
| Displacement | 124 cm³ (4.36 Imp oz, 4.19 US oz) | Standard | |
| Bore x Stroke | 54 x 54.5 mm (2.126 x 2.146 in) | Standard | |
| Compression Ratio | 8.6–10.7 : 1 | Standard | |
| Starting System | Kick starter | Standard | |
| Lubrication System | Premix (30 : 1)(Yamalube 2-R) | Standard |
Cataloging major assemblies into seven chapters, this manual provides a comprehensive sequence of repair and maintenance information. The following systems are documented:
- Engine: Covering cylinder head, piston, clutch, crankshaft, transmission, and more.
- Chassis: Detailing front and rear wheels, brakes, suspension, and steering.
- Electrical: Including ignition system and CDI components.
- Tuning: With procedures for engine and chassis adjustments. Service intervals are documented for routine checks and part replacements to ensure optimal performance. Component locations are identified for ease of access during maintenance. Service procedures are documented with clear instructions for disassembly and reassembly. Calibration requirements are specified for critical adjustments. Electrical system documentation covers wiring diagrams and component testing. This manual documents torque specifications for various components to ensure proper bolt stretch prevention and secure assembly.
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