Yamaha YZ 125 2006 Service Repair Workshop Manual

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🏷️ Basic Information Identification Make: Yamaha Model: YZ125 Year: 2006 Codes Chassis Code: 5TA1 Engine Code: 5TA 👋 Introduction Market Position Segment: Competition Motocross Target Audience: Motocross racers, enthusiasts, and...

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类型: Motorcycle

斯库: 478075

标签: 2006 Motorcycle Motorcycles Yamaha YZ 125 YZ Models

产品多属性

Description

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

YZ125

Year:

Codes

Chassis Code:

Engine Code:

👋 Introduction

Market Position

Segment:

Competition Motocross

Target Audience:

Motocross racers, enthusiasts, and mechanics

Competitive Analysis

Competitors 2006:

KTM 125 SX, Suzuki RM125, Honda CR125R, Kawasaki KX125

Key Features Vehicle

Performance Focus:

Lightweight chassis, potent two-stroke engine, advanced suspension for competitive racing.

Key Features Manual

Manual Utility:

Essential resource for maintaining peak performance and longevity of the YZ125.

Digital Advantage:

Instant access, searchable content, printable sections for workshop use.

📋 Manual Details

Coverage Areas

Primary Coverage:

Full Service, Repair, Troubleshooting, Diagnostics, Electrical Systems, Mechanical Systems

Secondary Coverage:

Routine Maintenance, Component Removal/Installation, Specifications, Wiring Diagrams, Special Tools

Page Count

Estimated Pages:

Approximately 300-400

Manual Type

Type:

Service Manual / Workshop Manual

Language

Language:

English

Format

Format:

Digital Download (PDF)

📖 Manual Coverage

Systems Covered

Engine Assembly:

Full disassembly, inspection, reassembly, and tuning of the two-stroke engine.

Fuel System:

Carburetor tuning, jetting, float adjustment, fuel petcock operation, fuel tank maintenance.

Ignition System:

CDI system, spark plug selection and gap, ignition timing checks, stator and coil testing.

Cooling System:

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

Transmission And Drivetrain:

Clutch operation, gear inspection, shifting mechanism service, chain and sprockets maintenance.

Suspension System:

Front fork (Kayaba USD) disassembly, oil changes, seal replacement, damping adjustments. Rear shock absorber service and linkage maintenance.

Braking System:

Front and rear disc brake system maintenance, pad replacement, caliper service, fluid bleeding, master cylinder inspection.

Electrical System:

Wiring diagrams, lighting system, horn, kill switch, component testing, battery maintenance (if applicable to accessory circuits).

Frame And Bodywork:

Chassis inspection, handlebar removal/installation, seat maintenance, fender and plastic component care.

Procedures Included

Routine Maintenance:

Oil changes (transmission), air filter cleaning, chain lubrication and adjustment, spark plug checks, bolt torque specifications.

Troubleshooting:

Systematic diagnostic procedures for common performance issues, starting problems, and mechanical failures.

Engine Rebuild:

Complete engine teardown, piston and cylinder inspection/replacement, crankshaft and bearing checks, seal replacements.

Suspension Service:

Fork seal replacement, fork oil level and viscosity specifications, shock absorber damper adjustments.

Electrical Diagnostics:

Testing of ignition coil resistance, stator output, and troubleshooting wiring harness issues using provided diagrams.

Technical Depth

Depth Level:

Comprehensive (suitable for professional mechanics and experienced DIY enthusiasts)

Diagnostic Capability:

Advanced diagnostic flowcharts and troubleshooting trees for identifying root causes of malfunctions.

Rebuild Scope:

Detailed instructions for full engine rebuilds and major component overhauls.

📊 Manual Specifications

File Format

Format:

Searchability:

Text-searchable PDF for quick information retrieval.

Print Quality

Image Clarity:

High-resolution scans with clear, legible text and diagrams.

Illustration Detail:

Detailed, step-by-step illustrations and exploded views.

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Liquid-cooled, 2-stroke, Reed valve, YZ Power Valve System (YPVS)

Displacement:

124 cc

Bore X Stroke:

54.0 mm x 54.5 mm

Compression Ratio:

8.8:1 (when tappet gap is 0.10 mm)

Carburetor:

Mikuni TMX38AX, Flat-slide

Carburetor Jetting Main:

Standard: #170

Carburetor Jetting Pilot:

Standard: #35

Carburetor Jetting Needle:

Standard: 6BFY42-3

Performance

Horsepower Est:

Approx. 35-40 HP (at crank, unconfirmed specific factory data)

Torque Est:

N/A (specific factory data not readily available)

Fuel System

Fuel Type:

Unleaded gasoline (91 octane or higher recommended)

Fuel Oil Mix Ratio:

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

Fuel Tank Capacity:

8.0 Liters (2.1 US gallons)

Lubrication

Transmission Oil Type:

Yamalube 10W-30 API SE, CC or CD

Transmission Oil Capacity:

0.63 Liters (0.67 US quarts)

🔧 Transmission

Standard

Type:

Constant mesh, 6-speed

Clutch Type:

Wet, multiple disc

Primary Drive Ratio:

3.000 (72/24)

Final Drive Ratio:

3.538 (46/13)

Features

Gear Ratios 1St:

2.615 (34/13)

Gear Ratios 2Nd:

1.933 (29/15)

Gear Ratios 3Rd:

1.556 (28/18)

Gear Ratios 4Th:

1.333 (24/18)

Gear Ratios 5Th:

1.143 (24/21)

Gear Ratios 6Th:

1.000 (23/23)

📐 Dimensions

Exterior

Length:

2145 mm (84.4 in)

Width:

825 mm (32.5 in)

Height:

1280 mm (50.4 in)

Wheelbase:

1475 mm (58.1 in)

Ground Clearance:

340 mm (13.4 in)

Seat Height:

970 mm (38.2 in)

Weights

Curb Weight:

98 kg (216 lbs)

Dry Weight:

93 kg (205 lbs)

🛡️ Safety Features

Ratings

Safety Certification:

Off-road use only (not street legal)

Active Features

Braking System Type:

Hydraulic disc brakes front and rear

Passive Features

Chassis Design:

Lightweight aluminum alloy frame for enhanced rigidity and handling.

💡 Technology Features

Infotainment

Infotainment System:

N/A (Competition Motocross Motorcycle)

Driver Assistance

Assistance Features:

N/A (Competition Motocross Motorcycle)

Connectivity

Connectivity Options:

N/A (Competition Motocross Motorcycle)

Engine Technology

Ypvs System:

Yamaha Power Valve System (YPVS) electronically controls exhaust port timing for improved power delivery across the rev range.

🔧 Maintenance

Service Intervals

Transmission Oil Change:

Every 10-15 hours of riding or annually.

Air Filter Cleaning:

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

Spark Plug Inspection:

Every 10-20 hours of riding.

Chain Adjustment Lubrication:

As needed, typically before every ride or every few hours.

Fluid Specifications

Fork Oil Viscosity:

Yamaha Suspension Fluid 01 (or SAE 0W-20 equivalent)

Fork Oil Level:

125 mm (4.92 in)

Known Issues

Common Wear Item Clutch:

Clutch plates can wear out over time and require replacement.

Common Wear Item Piston:

Piston and rings are wear items in a 2-stroke engine and require periodic replacement.

Suspension Seals:

Fork seals are prone to leakage and require replacement to maintain suspension performance.

📚 Vehicle History

Brand Heritage

Yamaha Motorcycles:

Yamaha Motor Company, Ltd. is a Japanese manufacturer of motorcycles, marine products, and other motorized products. Founded in 1955.

Model Evolution

Yz125 Legacy:

The YZ125 is a long-standing and highly respected model in the motocross world, known for its competitive performance and continuous refinement.

Production

Yz125 Production Period:

Continuous production since 1974, with significant updates throughout its history.

🏆 Awards & Recognition

Recognitions

Yz125 Reputation:

Consistently praised for its nimble handling, strong engine, and competitive edge in its class.

Ratings

Motocross Magazine Reviews:

Often a top contender in 125cc class shootouts by leading motocross publications.