Yamaha DT125X 2004 2005 2006 2007 Repair Service Manual

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Tipo: Motorcycle

Proveedor:

SKU: 66321

Etiquetas: 2004 2005 2006 2007 DT125X Misc Motorcycle Motorcycles Yamaha

Variantes de producto

Descripción

This manual covers the DT125X series, a lightweight dual-sport motorcycle produced for the 2004 through 2007 model years. Known for its 124cc liquid-cooled, 2-stroke engine, 6-speed transmission, telescopic front forks, and Monocross rear suspension, the DT125X offers a blend of off-road capability and street-legal functionality. Its robust engineering, characteristic of performance heritage, makes it a capable machine for enthusiasts and riders seeking an agile and reliable off-road experience. This comprehensive workshop service manual provides detailed guidance for all aspects of maintenance and repair for the DT125X. It includes in-depth information on engine mechanicals, electrical systems, fuel delivery, transmission, chassis, braking, and bodywork. The manual details routine maintenance procedures, troubleshooting common issues, complete repair and rebuild instructions, inspection and adjustment guidelines, essential torque specifications, and clear wiring diagrams. With its extensive coverage, this manual is an indispensable resource for owners and technicians aiming to keep the DT125X in optimal condition.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

DT125X

Model Series:

DT125X Series

Chassis Code:

Likely DE08, specific to DT125X

Generation

Generation:

First Generation (DT125X)

Codes

Engine Code General:

125cc 2-stroke

👋 Introduction

Market Position

Category:

Lightweight Dual-Sport / Enduro Motorcycle

Target Audience:

Enthusiasts and owners seeking comprehensive maintenance and repair guidance.

Competitive Analysis

Competitors General:

Honda CR series, Suzuki RM series, Kawasaki KX series (during similar production eras).

Key Features Vehicle

Engine Type:

2-stroke, liquid-cooled, single-cylinder

Transmission:

6-speed constant mesh

Suspension Front:

Telescopic forks

Suspension Rear:

Monoshock (Monocross suspension system)

Brakes:

Disc brakes front and rear

Wheel Size Front:

Typically 21-inch

Wheel Size Rear:

Typically 18-inch

Key Features Manual

Manual Purpose:

To guide mechanical technicians through all aspects of repair and maintenance.

Scope:

Comprehensive service and repair information.

📋 Manual Details

Coverage Areas

Covered Years:

2004, 2005, 2006, 2007

Page Count

Page Count:

Manual Type

Manual Type:

Workshop Service Manual

Language

Language:

English (presumed primary language based on typical Yamaha service manuals for international markets)

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Complete engine overhaul, disassembly, assembly, torque specifications, cylinder head, piston, connecting rod, crankshaft, lubrication system, cooling system (liquid-cooled).

Engine Electrical:

Ignition system, CDI unit, stator, spark plug, wiring diagrams, lighting system, charging system, battery.

Fuel System:

Carburetor (likely Mikuni VM28 or similar), fuel delivery, fuel tank, fuel filter, fuel lines, mixture adjustment.

Transmission:

6-speed gearbox, clutch operation, internal components, lubrication, gear shift mechanism.

Chassis And Frame:

Frame inspection, steering system, headstock bearings, suspension components (front forks, rear shock absorber), swingarm.

Braking System:

Hydraulic disc brakes (front and rear), brake calipers, master cylinders, brake fluid, bleeding procedures, pad replacement.

Wheels And Tires:

Wheel bearings, spoke tensioning, tire selection and pressures, rim specifications.

Exhaust System:

Exhaust pipe, muffler, sealing, maintenance.

Cooling System:

Radiator, coolant type and capacity, hoses, thermostat operation.

Electrical Component Locations:

Identification and function of key electrical components.

Bodywork And Trim:

Panel removal and installation, seat, fenders, fuel tank covers, decals.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, chain adjustment, lubrication points, spark plug checks, air filter cleaning/replacement.

Troubleshooting:

Diagnostic procedures for common problems, electrical faults, engine performance issues, starting problems.

Repair And Rebuild:

Detailed step-by-step instructions for component disassembly, repair, and reassembly.

Inspection And Adjustment:

Precise instructions for adjusting clutch, throttle, brakes, and other critical components.

Torque Specifications:

Comprehensive list of torque values for all fasteners.

Wiring Diagrams:

Detailed electrical schematics for all models and variations.

Special Tools:

Identification of specific tools required for certain maintenance or repair tasks.

Technical Depth

Depth:

Comprehensive. Covers everything from basic maintenance and owner checks to complete engine and transmission rebuilds, electrical system diagnostics, and frame/suspension work. Suitable for professional technicians and advanced DIY mechanics.

📊 Manual Specifications

File Format

File Format:

Print Quality

Print Quality:

High Resolution (typically, for digital manuals of this era, ensuring clarity of diagrams and text).

Binding Type

Binding Type:

N/A (Digital PDF format)

Paper Type

Paper Type:

N/A (Digital PDF format)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Liquid-cooled, 2-stroke, single-cylinder

Displacement:

124 cc (Cubic Centimeters)

Bore X Stroke:

Approx. 54 mm x 54.5 mm (typical for this engine family)

Compression Ratio:

Typically around 7.2:1 (or similar for 2-stroke)

Power Delivery System:

Reed valve induction

Performance

Horsepower Approx:

Approx. 20-25 HP (Varies by region and tuning)

Torque Approx:

Approx. 15-18 Nm (Varies by region)

Fuel System

Carburetor Type:

Mikuni VM28 (or similar 28mm flat-slide carburetor) is common for this model.

Fuel Type:

Unleaded gasoline (minimum 90 octane recommended)

Fuel Mixture Ratio:

50:1 (Gasoline:2-stroke oil) - Specific oil type to be confirmed in manual.

🔧 Transmission

Standard

Type:

6-speed constant mesh

Clutch Type:

Wet, multi-plate

Features

Gear Ratios:

Specific gear ratios are detailed within the manual, crucial for performance tuning.

Final Drive:

Chain drive

📐 Dimensions

Exterior

Length Approx:

Approx. 2100 mm (dependent on specific configuration)

Width Approx:

Approx. 800 mm (dependent on specific configuration)

Height Approx:

Approx. 1200 mm (dependent on specific configuration)

Weights

Dry Weight Approx:

Approx. 110-120 kg (dependent on options)

Fuel Tank Capacity:

Approx. 10-12 Liters

🛡️ Safety Features

Ratings

Safety Ratings:

N/A (Motorcycles typically do not have standardized crash test ratings like cars)

Active Features

Braking System:

Disc brakes front and rear for effective stopping power.

Suspension Stability:

Modern suspension design for ride stability and control.

Passive Features

Lighting:

Headlight, taillight, and turn signals for visibility.

💡 Technology Features

Infotainment

Infotainment System:

N/A (Analog instrumentation: speedometer, tachometer, basic indicator lights).

Driver Assistance

Connectivity

Connectivity Features:

🔧 Maintenance

Service Intervals

Oil Change Engine:

Recommended every 1,000-2,000 km or annually, refer to manual for precise interval.

Spark Plug Check:

Recommended every 2,000-3,000 km.

Air Filter Cleaning:

Recommended every 1,000-2,000 km, or more frequently in dusty conditions.

Chain Lubrication Adjustment:

Every 500 km or as needed.

Fluid Specifications

Engine Oil Type:

Specific 2-stroke oil meeting API TC, JASO FD or FD standards is crucial. Manual will specify exact type and viscosity.

Coolant Type:

Ethylene glycol-based antifreeze coolant with corrosion inhibitors. Manual specifies ratio and capacity.

Brake Fluid Type:

DOT 4 brake fluid (typically for hydraulic systems).

Known Issues

Common Wear Items:

Clutch plates, spark plugs, piston rings, chain and sprockets, wheel bearings, fork seals (typical for a dual-sport of this age).

2-Stroke Specific:

Carbon build-up in exhaust ports and combustion chamber, requiring periodic decarbonization.

Carburetor Tuning:

Can require careful tuning for optimal performance and reliability, especially after modifications or altitude changes.

📚 Vehicle History

Brand Heritage

Brand Focus:

Yamaha's strong legacy in performance motorcycles, including motocross and enduro models.

Model Evolution

Lineage:

The DT series has a long history, evolving from the original dual-purpose bikes to more performance-oriented models. The DT125X represents a modern interpretation of a lightweight off-road capable motorcycle.

Production

Production Period:

Specific years covered by the manual: 2004-2007.

🏆 Awards & Recognition

Recognitions

Awards:

Specific awards for the DT125X model are not widely documented, but the DT lineage is known for its durability and off-road capability.