Yamaha DT125 DT125RE DT125X 2002-2008 Full Service Repair Manual

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Taper: Motorcycle

Distributeur:

UGS: 57650

Mots clés: 2002 2003 2004 2005 2006 2007 2008 DT125 DT125RE DT125X Marine Motorcycle Sterndrive Yamaha

Variantes de produits

Description

This manual provides comprehensive service and repair information for DT125RE and DT125X models produced between 2002 and 2008. These versatile dual-sport motorcycles are celebrated for their reliable two-stroke engines, capable off-road performance, and everyday usability, building upon the legendary DT series heritage. Engineered for durability and rider enjoyment, the DT125 platform offers a blend of agility and power, making it a popular choice for both commuting and adventurous trail riding. This detailed English-language manual covers all aspects of maintenance, troubleshooting, and repair, mirroring the depth and accuracy of factory documentation. It includes step-by-step instructions, diagnostic procedures, and technical specifications for all major systems, from the engine and fuel system to the electrical components and chassis. Whether you are an owner, an independent mechanic, or an enthusiast looking to restore or maintain your DT125RE or DT125X, this manual is an essential resource for ensuring optimal performance and longevity.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

DT125RE, DT125X

Model Variations Covered:

DT125RE, DT125X

Years Covered:

2002, 2003, 2004, 2005, 2006, 2007, 2008

Codes

Chassis Codes:

Likely 5FW for RE, 5VR for X (common for the era, specific confirmation requires manual access)

👋 Introduction

Market Position

Target Audience:

Yamaha DT125RE and DT125X owners, independent repair shops, enthusiast mechanics.

Competitive Analysis

Value Proposition:

Provides professional-grade repair and maintenance information, saving owners significant costs compared to dealership service.

Key Features

Accessibility:

Instant download eliminates shipping costs and waiting times.

Documentation Standard:

Matches the detail and accuracy found in factory service manuals.

📋 Manual Details

Coverage Areas

Scope Of Coverage:

Comprehensive service, repair, maintenance, diagnostics, restoration

Page Count

Estimated Page Count:

High (typically 300-500+ pages for full service manuals of this type, specific count not provided)

Manual Type

Type:

Full Service Repair Manual

Language

Language:

English

Format

File Format:

Delivery Method:

Instant Download

Compatibility:

All Windows versions, Mac, Printable

Requirements:

Adobe PDF Reader, WinRAR

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Engine assembly, disassembly, cylinder head, piston, crankshaft, connecting rod, lubrication system, cooling system (if applicable), cylinder block.

Fuel System:

Carburetor (Mikuni VM series typical), fuel tank, fuel lines, fuel pump (if equipped), air filter.

Ignition System:

CDI ignition, spark plug, ignition coil, stator, rotor, wiring.

Exhaust System:

Exhaust pipe, muffler, emissions control (if applicable).

Transmission Drivetrain:

Clutch operation, gearbox (6-speed manual typical), gear shift mechanism, final drive (chain).

Suspension:

Front forks (conventional or USD depending on variant), rear monoshock or twin shock absorber, linkages, swingarm.

Brakes:

Front disc brake, rear disc or drum brake (depending on model variant), hydraulic system, caliper, master cylinder, brake fluid specifications.

Wheels Tires:

Wheel bearing, spokes, rim maintenance, tire types, inflation pressures.

Electrical System:

Wiring diagrams, battery, charging system (alternator/stator), lighting (headlight, taillight, indicators), horn, starter (if electric start equipped), instrument cluster.

Frame Bodywork:

Frame inspection, body panel removal/installation, seat, fuel tank, fenders, handlebars, controls.

Procedures Included

Maintenance:

Scheduled maintenance, oil changes, filter replacements, chain adjustment, brake bleeding, spark plug replacement, carburetor cleaning/adjustment.

Troubleshooting:

Diagnostic procedures for common issues, electrical system troubleshooting, engine performance problems, starting difficulties.

Repair:

Detailed step-by-step repair instructions for all major components and systems, including engine rebuilds, suspension overhaul, brake system repairs.

Diagnostics:

Systematic diagnostic approaches, electrical testing with multimeter, fault finding for ignition and fuel systems.

Technical Depth

Depth:

Full factory-level detail, suitable for professional technicians and advanced DIY mechanics.

Illustrations:

Detailed illustrations, drawings, and photos for each procedure.

Instructions Format:

Numbered steps, notes, cautions, warnings, bold figure numbers for easy reference.

📊 Manual Specifications

File Format

Quality:

PDF, Full Printable

Print Quality

Printability:

All pages are printable.

Binding Type

Binding Type:

Digital (PDF download)

Paper Type

Paper Type:

Not Applicable (Digital Format)

⚙️ Engine Specifications

Primary Engine

Engine Type:

2-stroke, liquid-cooled, single-cylinder

Displacement:

124 cc (approximate)

Bore X Stroke:

Typically around 56.0 mm x 50.7 mm (verify with manual)

Compression Ratio:

Likely around 7.0:1 - 8.5:1 (verify with manual)

Performance

Horsepower:

Approximately 15-20 HP (varies by market and specific model tune, verify with manual)

Torque:

Approximately 1.2-1.5 kg-m or 12-15 Nm (verify with manual)

Fuel System

Carburetor Type:

Mikuni VM28 or similar (confirm specific model)

Fuel Type:

Unleaded gasoline with appropriate 2-stroke oil pre-mix or autolube system

Lubrication

Lubrication Type:

Autolube (oil injection system) or pre-mix (verify specific model)

🔧 Transmission

Standard

Type:

6-speed constant mesh, sequential

Clutch Type:

Wet, multi-disc, cable-operated

Features

Gear Ratios:

Specific ratios available within the manual

📐 Dimensions

Exterior

Wheelbase:

Approximately 1390 mm (verify with manual)

Weights

Curb Weight:

Approximately 110-125 kg (verify with manual)

Fuel Capacity:

Approximately 10-12 liters (verify with manual)

🛡️ Safety Features

Ratings

Safety Features Coverage:

Manual covers inspection and maintenance of safety systems like brakes and lighting.

Active Features

Brakes:

Front hydraulic disc, Rear disc (RE) or Drum (X variant often had drum, verify).

💡 Technology Features

Infotainment

Instrument Cluster:

Analog speedometer, tachometer, odometer, trip meter, indicator lights (turn signals, high beam, neutral). Manual details diagnostics.

Driver Assistance

Assistance Features:

N/A (This is a motorcycle, typically no advanced electronic driver assistance systems).

Connectivity

Connectivity Features:

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 3,000-5,000 km or annually (verify specific interval in manual)

Spark Plug Replacement:

Recommended at 5,000-10,000 km or based on inspection (verify)

Chain Lubrication Adjustment:

Regular checks, lubricate every 500-1000 km, adjust chain slack as per manual.

Fluid Specifications

Engine Oil:

2-stroke engine oil, JASO FD or higher specification (verify type and viscosity)

Brake Fluid:

DOT 3 or DOT 4 brake fluid (verify specific requirement)

Coolant:

For liquid-cooled models, a 50/50 mix of ethylene glycol coolant and distilled water (verify)

Known Issues

Common Problems:

Carburetor jetting issues, exhaust valve operation (if equipped), fork seal leaks, electrical connector corrosion (typical for older bikes). Manual provides solutions.

📚 Vehicle History

Brand Heritage

Yamaha Legacy:

Yamaha has a long-standing reputation for producing reliable and performance-oriented off-road and dual-sport motorcycles.

Model Evolution

Dt Series Significance:

The DT series is a legendary line of dual-sport motorcycles known for their off-road capability and everyday usability.

Production

Production Period Focus:

Covers the significant mid-2000s iterations of the DT125 platform.

🏆 Awards & Recognition

Recognitions

Industry Recognition:

The Yamaha DT series has historically received acclaim for its durability and versatility, though specific awards for the 2002-2008 models are not cited here. The manual itself is a recognized resource.