2002 Yamaha YZ125P Owner's Service Manual

Wiring diagrams, specifications, and repair sequences for the YZ125P. Covers fuser assembly, paper path, and imaging procedures plus diagnostic flowcharts. Ref: YU-1135-A

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Document Details

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Document Number / Seller:
29610 / Carol Lee
File Size:
8.76 MB
File Type:
PDF
Language:
English
Pages:
255
Printable:
Yes
Category:
Bike
Last updated / verified
Nov 22, 2025

Models Covered & Key Technical Specifications

Unified Diagnostic Manual: Bike Yamaha YZ125P (2002) - Factory-Grade Repair & Maintenance Manual Documentation-Framework

Equipment-Series: Bike Yamaha YZ125P (2002) // Asset-ID: 2002 Yamaha YZ125P Owner´s Service Manual / Repair Manual Logic // Design-Core: Factory-Grade Repair & Maintenance Manual Documentation-Framework

  • Designated Reservoir Specs: 8.0 L is the total fuel tank capacity for operation.
  • Primary Displacement Data: 124 cm3 is the engine displacement for standard performance.
  • Advanced Dimensional Tolerance: 54.000~54.014 mm defines the cylinder bore standard.
  • Defined Climate Parameters: 0.5~0.6 mm is the specified spark plug gap for environmental control.
  • Key Physical Specs: 102 kg is the minimum weight for the class 500 cc component.
  • Essential Baseline: 20 Nm signifies the standard torque value for spark plug tightening.

Professional Workshop Service Manual & Technical Specifications

Unified Diagnostic Manual: Bike Yamaha YZ125P (2002) - Factory-Grade Repair & Maintenance Manual Documentation-Framework

Equipment-Series: Bike Yamaha YZ125P (2002) // Asset-ID: 2002 Yamaha YZ125P Owner´s Service Manual / Repair Manual Logic // Design-Core: Factory-Grade Repair & Maintenance Manual Documentation-Framework

Repair data is categorized into the following sections:

  • Engine: Covers the power valve, piston, crankshaft, and other critical engine components.
  • Chassis: Details front and rear suspension, wheels, and brake systems.
  • Electrical: Outlines ignition system and electrical components.
  • Carburetor: Includes procedures for carburetor and reed valve maintenance.
  • Transmission: Explains shift cam and shift fork assembly.
Component Value Calibration-Data
Engine Detailed procedures Torque specifications for critical engine parts
Chassis Diagrams for wheel and brake Suspension adjustments and specifications
Electrical Wiring schematics Ignition system and CDI magneto information
Carburetor Removal and inspection Fuel level and jet specifications
Transmission Gear and shift fork layout Shaft and gear tolerances

Consistently requiring proper maintenance, this manual addresses engine, chassis, and electrical systems. It provides comprehensive information on the bike's components, ensuring that repairs and adjustments are performed correctly.

FAQ

Confirm the **recommended** diagnostic procedures for this model? keyboard_arrow_down

124 cm3 is the engine displacement for this Yamaha YZ125P, and proper diagnostic procedures are outlined throughout the manual to ensure optimal performance.

What tools **calibrated** fluid capacity requirements are needed? keyboard_arrow_down

8.0 L is the specified fuel tank capacity, and specific tools such as a fuel level gauge (YM-1312-A/90890-01312) are required for accurate measurement.

Identify the **applicable** component identification for the engine? keyboard_arrow_down

54.000~54.014 mm is the standard cylinder bore size, crucial for identifying engine component specifications.

What procedures **exact** adjustment procedures are detailed for the brakes? keyboard_arrow_down

23 Nm (2.3 m•kg, 17 ft•lb) is the tightening torque for the front brake caliper bolts, and various procedures for brake adjustment are detailed to ensure proper function.

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Reviews (4)

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I love how comprehensive this manual is. It covers everything I need to know!
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This manual is incredibly detailed and easy to follow. The diagrams are a lifesaver!
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Rated 4 out of 5 stars
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Rated 4 out of 5 stars