Yamaha YZ125 Workshop Repair Manual All 2005-2006 ModelS COVERED

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🏷️ Basic Information Identification Make: Yamaha Model: YZ125 Model Years Covered: 2005, 2006 Codes Model Code 2005: YZ125X Model Code 2006: YZ125Y 👋 Introduction Market Position Target Audience: Enthusiast riders,...

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类型: Motorcycle

斯库: 270399

标签: 2005 2006 AT Models Motorcycle Motorcycles Yamaha YZ125

产品多属性

Description

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

YZ125

Model Years Covered:

2005, 2006

Codes

Model Code 2005:

YZ125X

Model Code 2006:

YZ125Y

👋 Introduction

Market Position

Target Audience:

Enthusiast riders, professional mechanics, DIY mechanics working on the Yamaha YZ125.

Purpose:

To provide comprehensive repair and maintenance information for the Yamaha YZ125, enabling owners to perform a wide range of tasks.

Competitive Analysis

Competitor Manuals:

This manual offers a level of detail comparable to official Yamaha factory service manuals.

Key Features

Comprehensiveness:

Covers all major mechanical and electrical systems in detail.

Clarity:

Detailed instructions, clear diagrams, and easy-to-understand language.

Accessibility:

Instant digital download allows immediate access to critical repair information.

📋 Manual Details

Coverage Areas

Manual Type:

Workshop Service Repair Manual

Language:

English

Format:

Digital Download (PDF)

Page Count

Estimated Page Count:

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Complete overhaul, disassembly, assembly, inspection, and torque specifications for all internal engine components.

Fuel System:

Carburetor tuning, cleaning, overhaul, fuel pump (if applicable), fuel lines, and fuel tank service.

Ignition System:

CDI unit, spark plug inspection and replacement, stator and rotor testing, wiring diagrams.

Cooling System:

Radiator service, water pump inspection and repair, coolant type and capacity.

Transmission Drivetrain:

Clutch service, gearbox disassembly and assembly, gear inspection, shift mechanism repair, chain and sprocket maintenance.

Suspension Front:

Fork seal replacement, oil level and type, damping adjustments, spring replacement, fork leg disassembly and assembly.

Suspension Rear:

Shock absorber service, linkage bearing inspection and lubrication, spring preload adjustment, swingarm service.

Brakes Front:

Caliper overhaul, brake pad replacement, rotor inspection, brake fluid type and bleeding procedure.

Brakes Rear:

Caliper overhaul, brake pad replacement, rotor inspection, brake fluid type and bleeding procedure.

Electrical System:

Wiring diagrams, battery maintenance, lighting system, kill switch, handlebar controls, fuse box.

Chassis Frame:

Frame inspection, headstock bearing service, subframe inspection.

Bodywork Plastics:

Fairing removal and installation, seat, fuel tank cover, fender replacement.

Procedures Included

Routine Maintenance:

Pre-ride checks, oil changes, filter cleaning/replacement, chain lubrication and adjustment.

Troubleshooting:

Diagnostic guides for common problems and symptoms, root cause analysis.

Engine Rebuild:

Complete step-by-step instructions for engine disassembly, cleaning, inspection, parts replacement, and reassembly.

Suspension Rebuild:

Detailed guides for overhauling front forks and rear shock absorbers, including seal replacement and fluid changes.

Brake Service:

Pad and rotor replacement, caliper servicing, bleeding procedures.

Electrical Diagnostics:

Using wiring diagrams to diagnose electrical faults, testing components.

Carburetor Tuning And Rebuild:

Jetting adjustments, float bowl cleaning, gasket replacement.

Technical Depth

Diagnostic Procedures:

In-depth troubleshooting guides with symptom-based fault finding.

Repair Procedures:

Comprehensive, step-by-step instructions for all mechanical and electrical repairs.

Rebuild Instructions:

Detailed procedures for complete engine and component rebuilds.

Torque Specifications:

Precise torque values for all critical fasteners and bolts.

Wiring Diagrams:

High-quality, clear, and complete electrical system wiring diagrams.

📊 Manual Specifications

File Format

File Type:

Searchable:

Printable:

Print Quality

Image Resolution:

High-resolution for clear diagrams and illustrations.

Binding Type

Digital Format:

Instant Download

⚙️ Engine Specifications

Primary Engine

Engine Type:

2-Stroke, Liquid-Cooled, Reed Valve Induction

Bore X Stroke Mm:

54.0 x 54.5 mm

Displacement Cc:

Compression Ratio:

9.2:1 (or as specified for model year)

Carburetor Model:

Keihin PWK38S

Ignition System:

CDI Digital

Air Cleaner:

Sponge type

Performance

Horsepower Hp:

Approx. 39-40 HP (at crankshaft, model dependent)

Torque Lb-Ft:

Approx. 17-18 lb-ft (at crankshaft, model dependent)

Fuel System

Fuel Type:

Unleaded gasoline (91 octane or higher recommended)

Fuel Oil Mixture:

50:1 (Yamalube 2-stroke oil or equivalent)

Fuel Tank Capacity L:

7.2 L (1.9 US gal)

🔧 Transmission

Standard

Transmission Type:

Constant Mesh, 6-speed

Clutch Type:

Wet, multiple-disc

Final Drive:

O-ring sealed chain

Features

Gear Ratios:

Refer to manual for specific gear ratios per model year.

Transmission Oil Capacity Ml:

Approx. 0.7 L (0.74 US qt)

Transmission Oil Type:

Yamalube SAE 10W-30 API SG or higher

📐 Dimensions

Exterior

Overall Length Mm:

Overall Width Mm:

Overall Height Mm:

Seat Height Mm:

Wheelbase Mm:

Weights

Dry Weight Kg:

Curb Weight Kg:

98 (estimated, with all necessary fluids)

Front Suspension Travel Mm:

Rear Suspension Travel Mm:

Tire Size Front:

80/100-21 51M

Tire Size Rear:

110/90-19 62M

Brake Type Front:

Hydraulic disc

Brake Type Rear:

Hydraulic disc

🛡️ Safety Features

Ratings

Crash Safety Rating:

Not Applicable (Off-road motorcycle)

Active Features

Braking System:

Powerful hydraulic disc brakes front and rear for effective stopping power.

Passive Features

Frame Construction:

Strong aluminum alloy frame designed for off-road durability and rider control.

Ergonomics:

Optimized rider triangle for control and comfort during demanding off-road riding.

💡 Technology Features

Infotainment

Infotainment System:

Not Applicable (Purely performance-focused off-road motorcycle)

Driver Assistance

Driver Assistance Features:

Not Applicable (Performance off-road motorcycle)

Connectivity

Connectivity Features:

Not Applicable (Performance off-road motorcycle)

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 10-15 hours of riding or as specified in the manual.

Air Filter Cleaning:

After every few rides, or more frequently in dusty conditions.

Spark Plug Inspection:

Every 20-30 hours of riding.

Chain Lubrication Adjustment:

Before every ride or as needed.

Fork Oil Change:

Every 20-40 hours of riding, or as per manual recommendations for optimal performance.

Fluid Specifications

Engine Oil Type:

Yamalube 2-stroke oil or equivalent (premix ratio 50:1)

Transmission Oil Type:

Yamalube SAE 10W-30 API SG or higher

Coolant Type:

Permanent type antifreeze (ethylene glycol based), 50/50 mix with distilled water.

Brake Fluid Type:

DOT 3 or DOT 4 Hydraulic Brake Fluid

Known Issues

Clutch Wear:

Clutch plates can wear over time, especially with aggressive riding. Manual provides replacement instructions and specifications.

Carburetor Jetting:

May require adjustment based on altitude, temperature, and modifications. Manual details the jetting process.

Suspension Seals:

Fork and shock seals can degrade and leak, requiring replacement. Manual offers detailed seal replacement procedures.

Power Valve Cleaning:

The power valve system can accumulate carbon, affecting performance. Regular cleaning is recommended as detailed in the manual.

📚 Vehicle History

Brand Heritage

Yamaha Legacy:

Yamaha has a long and storied history in motocross and off-road racing, with the YZ line being a cornerstone of their performance offerings.

Model Evolution

Yz125 Development:

The YZ125 has been continuously developed and refined since its inception, focusing on lightweight design, powerful engines, and advanced suspension for competitive motocross performance.

2005 2006 Updates:

These model years represent a period of refinement for the YZ125, building on established platforms with minor tweaks to suspension, engine tuning, and aesthetics.

Production

Manufacturing Origin:

Japan

🏆 Awards & Recognition

Recognitions

Yz125 Racing Success:

The YZ125 platform has a proven track record in amateur and professional motocross racing, earning numerous class victories and championships.

Ratings

Rider Reviews:

Consistently praised by riders for its lightweight chassis, powerful engine, and agile handling, making it a benchmark in its class.