Yamaha DT125 DT125RE DT125X 2005 Factory Service Manual

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Type: Motorcycle

Vendor:

Sku: 62314

Tags: 2005 DT125 DT125RE DT125X Marine Motorcycle Sterndrive Yamaha

Product variants

Description

This manual covers the DT125RE and DT125X models from 2005, refined iterations within the esteemed DT125 lineage. The legacy in dual-sport motorcycles is well-established, and these models embody the commitment to ruggedness and capability. Designed for versatile use, these dual-sport motorcycles offer a blend of on-road usability and off-road prowess, characteristic of the iconic DT series. Owners can expect a reliable machine engineered for enduring performance, reflecting the long-standing reputation for quality. This comprehensive Factory Service Repair Manual, written in English, provides factory-level detail for owners and technicians. It meticulously details all major vehicle systems, including the engine, fuel system, transmission, brakes, suspension, steering, and electrical system. The manual offers step-by-step maintenance and repair procedures, diagnostic guidance, and troubleshooting solutions. With its wealth of information, including detailed illustrations and specifications, this manual is an indispensable resource for performing routine maintenance, complex repairs, and ensuring the optimal performance and longevity of your DT125RE or DT125X.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

DT125RE, DT125X

Year:

Vehicle Type:

Dual-Sport Motorcycle

Generation

Model Generation:

Refined models within the DT125 lineage

👋 Introduction

Market Position

Target Audience:

Owners of Yamaha DT125RE and DT125X models from 2005 seeking to perform maintenance, diagnostics, and repairs.

Key Features

Content Highlights:

Comprehensive, step-by-step instructions, detailed illustrations, diagrams, specifications, troubleshooting guides, and 'secret techniques' used by top mechanics.

Value Proposition

Benefits For Owner:

Empowers owners to make informed maintenance decisions, communicate effectively with mechanics, and potentially reduce repair costs.

📋 Manual Details

Coverage Areas

Covered Models:

Yamaha DT125, DT125RE, DT125X (all styles for 2005)

Page Count

Estimated Page Count:

Hundreds of pages (specific number not provided, but described as comprehensive)

Manual Type

Manual Type:

Factory Service Repair Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine:

Detailed coverage of engine systems including top end, lubrication, and internal components.

Fuel System:

Comprehensive details on the fuel delivery system, including carburetor settings and components.

Cooling System:

Information pertaining to the engine's cooling mechanisms.

Clutch:

In-depth coverage of clutch operation, maintenance, and repair procedures.

Transmission:

Detailed information on the gearbox, including removal, installation, and internal workings.

Wheels Tires:

Specifications and procedures related to wheels, tires, and their mounting.

Final Drive:

Coverage of the final drive mechanism, likely a chain drive system for this model.

Brakes:

Detailed information on both front and rear braking systems, including hydraulic components and disc/drum specifics.

Suspension:

Coverage of front forks and rear shock absorber systems, including adjustments and servicing.

Steering:

Procedures for steering system maintenance, including handlebar and fork adjustments.

Frame:

Information related to the motorcycle's chassis and frame components.

Electrical System:

Comprehensive coverage of the electrical system, including wiring diagrams, lighting, ignition, and battery.

Troubleshooting:

Advanced troubleshooting guide for diagnosing and correcting common and complex issues.

Procedures Included

Maintenance:

Routine maintenance tasks, fluid changes, lubrication, and component checks.

Repair:

Step-by-step repair procedures for all major vehicle systems.

Diagnostics:

Detailed guidance on diagnosing engine fault symptoms and component issues.

Rebuild:

Procedures for complete engine or component rebuilds, as performed by factory technicians.

Electrical Diagnosis:

Specific procedures for tracing and verifying wiring diagrams and diagnosing electrical faults.

Technical Depth

Depth Of Information:

Factory-level detail, suitable for professional technicians and advanced DIY enthusiasts. Covers fundamentals to intricate repairs.

📊 Manual Specifications

File Format

File Format:

Print Quality

Printability:

Printable without restriction, allowing for full or partial printing of pages.

Binding Type

Binding Type:

Digital Download (Printable)

Paper Type

Paper Type:

Not Applicable (Digital)

Software Requirements

Reader Requirement:

Adobe PDF Reader

⚙️ Engine Specifications

Primary Engine

Engine Type:

Likely a 124cc liquid-cooled, 2-stroke, single-cylinder engine (typical for DT125 models of this era).

Performance

Horsepower:

Specific figures not provided, but typically in the 15-20 HP range for this class.

Torque:

Specific figures not provided, but generally adequate for its dual-sport purpose.

Fuel System

Carburetion:

Likely equipped with a Mikuni carburetor (e.g., VM26 or similar).

Fuel Type:

Unleaded gasoline (with appropriate 2-stroke oil pre-mix or injection system, depending on specific variant).

Lubrication

Oil System:

Likely an oil injection system or requires manual oil mixing with fuel for lubrication.

🔧 Transmission

Standard

Transmission Type:

Likely a 6-speed constant mesh manual transmission.

Features

Clutch Operation:

Wet, multiple-disc clutch, operated by cable.

📐 Dimensions

Exterior

Wheelbase:

Specific figures not provided, but typical for dual-sport bikes in this displacement class.

Weights

Dry Weight:

Specific figures not provided, but expected to be in the ~110-120 kg range.

🛡️ Safety Features

Active Features

Braking System:

Disc brakes front and rear (common for RE and X variants, though some earlier DT125s had drum brakes).

Passive Features

Lighting:

Standard motorcycle lighting system including headlamp, taillight, and turn signals.

💡 Technology Features

Infotainment

Instrumentation:

Analog speedometer, tachometer, and essential indicator lights.

Driver Assistance

Anti-lock Braking System (ABS) was not a common feature on motorcycles of this type and era.

🔧 Maintenance

Service Intervals

Oil Change:

Specific intervals detailed in the manual, typically every few thousand kilometers or annually, depending on usage.

Spark Plug Replacement:

Intervals will be specified in the manual for optimal performance.

Fluid Specifications

Engine Oil:

2-stroke engine oil, specific grade and type will be detailed (e.g., API TC rated).

Coolant:

If liquid-cooled, specific coolant type and mixture ratio will be provided.

Brake Fluid:

DOT 3 or DOT 4 brake fluid, as per Yamaha specifications.

Known Issues

Common Wear Items:

Clutch plates, piston rings, and fork seals are common wear items on 2-stroke motorcycles of this age and type.

Carburetor Cleaning:

Regular cleaning and adjustment of the carburetor may be necessary to maintain optimal running conditions.

📚 Vehicle History

Brand Heritage

Yamaha Legacy:

Yamaha has a long-standing reputation for producing reliable and capable dual-sport motorcycles, with the DT series being iconic.

Model Evolution

Dt125 Lineage:

The DT125 has evolved significantly over the decades, with the 2005 models representing a more modern iteration with advancements in suspension and styling.

🏆 Awards & Recognition

Recognitions

Model Reputation:

The DT series is generally recognized for its ruggedness, off-road capability, and reliability as a dual-sport machine.