🏷️ Basic Information

Make:

Yamaha

Model:

TT-R125

Model Variants:

E, L, LE

Year:

2005

Engine Code:

13P

Chassis Code:

4FC1

👋 Introduction

Segment:

Lightweight Off-Road / Trail / Youth Motorcycle

Target Audience:

Beginner to intermediate riders, recreational trail riding, off-road practice.

Competitors:

Honda CRF125F/CRF100F, Kawasaki KLX140/KLX125, Suzuki DR-Z125

Vehicle Features:

Reliable air-cooled engine, electric start (E/LE models), manual clutch (L/LE models), durable chassis, user-friendly ergonomics.

Value:

Provides dealership-level technical information for accurate diagnosis, maintenance, and repair, saving time and money compared to outsourced service.

📋 Manual Details

Vehicle Models Covered:

2005 Yamaha TT-R125E, 2005 Yamaha TT-R125L, 2005 Yamaha TT-R125LE

Regions Covered:

Global (standard specifications applicable)

Estimated Page Count:

300+

Type:

Combined Owner's & Motorcycle Service Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Powertrain:

Engine, Transmission, Clutch, Fuel System, Exhaust System

Chassis:

Frame, Suspension (Front & Rear), Steering, Wheels, Tires, Brakes (Front & Rear)

Electrical:

Ignition System, Lighting, Charging System, Battery, Wiring Diagrams, Instruments

Body And Controls:

Bodywork, Seat, Handlebars, Levers, Footpegs, Controls

Routine Maintenance:

Oil Changes, Filter Replacements, Chain Adjustment, Spark Plug Service, Air Filter Cleaning

Troubleshooting:

Diagnostic charts, Common problems and solutions, Symptom-based diagnosis

Repair And Rebuild:

Engine disassembly/assembly, Transmission overhaul, Carburetor rebuild, Suspension component replacement, Brake system bleeding

Technical Adjustments:

Carburetor tuning, Valve clearance adjustment, Chain slack adjustment, Suspension setup

Depth:

Comprehensive, from basic owner checks to full engine rebuilds and detailed electrical system diagnostics. Suitable for dealership technicians and experienced DIY mechanics.

📊 Manual Specifications

File Type:

PDF

Searchability:

Fully searchable text for quick information retrieval

Resolution:

High-resolution scans for clear text and diagrams

Printability:

Printable pages for easy workshop use

Binding:

N/A (Digital Format)

Paper:

N/A (Digital Format)

⚙️ Engine Specifications

Type:

Air-cooled, 4-stroke, SOHC, 2-valve

Displacement:

124cc (123.7cc)

Bore X Stroke:

54.0 mm x 54.5 mm

Compression Ratio:

9.5:1

Horsepower:

Approx. 10-12 HP (estimated, not officially published for this specific year/model in detail)

Torque:

Approx. 7-8 lb-ft (estimated, not officially published for this specific year/model in detail)

Carburetor:

Mikuni VM20SS (E/L) or similar (LE may vary slightly, check manual for specifics)

Fuel Type:

Unleaded gasoline

Fuel Tank Capacity:

1.6 Gallons (6.1 Liters)

Ignition System:

CDI (Capacitor Discharge Ignition)

Lubrication Type:

Wet sump

Engine Oil Type:

Yamalube 4 (or equivalent) SAE 10W-30 API SG or higher

Engine Oil Capacity:

0.90 Liters (0.95 US qt) without filter change, 1.00 Liters (1.05 US qt) with filter change

🔧 Transmission

Type:

5-speed constant mesh

Clutch Type:

Wet, multiple disc (manual clutch on L/LE models)

Transmission Variants:

Note: 'E' typically denotes Electric Start only, 'L' denotes Manual Clutch, 'LE' denotes Electric Start and Manual Clutch. All have the same 5-speed transmission.

Gear Ratios:

Refer to manual for specific gear ratios (typically found in a dedicated section)

Final Drive:

Chain drive

📐 Dimensions

Length:

71.7 inches (1820 mm)

Width:

31.1 inches (790 mm)

Height:

42.9 inches (1090 mm)

Seat Height:

31.7 inches (805 mm)

Wheelbase:

49.4 inches (1255 mm)

Dry Weight:

214 lbs (97 kg)

Wet Weight:

229 lbs (104 kg) (approx.)

Maximum Load:

Refer to manual (typically rider + moderate gear)

🛡️ Safety Features

Safety Ratings:

N/A (Off-road motorcycles are not subject to DOT/NHTSA crash testing)

Braking System:

Front: Hydraulic Disc Brake, Rear: Drum Brake

Lighting:

Headlight, Taillight/Brake Light

Frame Construction:

Steel, double-cradle

Chassis Design:

Designed for off-road stability and maneuverability.

💡 Technology Features

Features:

Basic instrument cluster (speedometer/odometer on some models, neutral indicator), no advanced infotainment systems.

Features:

N/A (Off-road motorcycle, no electronic rider aids like ABS or traction control).

🔧 Maintenance

Oil Change Interval:

Every 1000 km (600 miles) or 6 months, whichever comes first.

Air Filter Cleaning:

Every 1000 km (600 miles) or as needed in dusty conditions.

Spark Plug Inspection:

Every 5000 km (3000 miles).

Valve Clearance Check:

Every 10000 km (6000 miles).

Fork Oil Type:

Yamaha Fork Oil G-10 or equivalent SAE 10W

Fork Oil Capacity:

Refer to manual for specific oil level/volume per leg

Brake Fluid Type:

DOT 3 or DOT 4

Common Wear Items:

Clutch plates (especially with aggressive use), chain and sprockets, tires, brake pads/shoes.

Potential Problems:

Carburetor jetting sensitivity to altitude/temperature, occasional electrical connector corrosion in wet environments, starter motor wear (on E/LE models with heavy use).

Oem Part Numbers:

Manual contains OEM part numbers for major components, facilitating ordering from dealerships.

📚 Vehicle History

Brand Focus:

Yamaha Corporation is a global leader in motorcycles, musical instruments, and other diverse products, known for engineering and performance.

Tt-R Series Evolution:

The TT-R line has a long history of providing accessible and capable off-road motorcycles for various skill levels and engine sizes, evolving from earlier models like the TT-R125/TT-R125 Big Wheel.

Manufacturing Location:

Likely manufactured in Japan or Southeast Asia (specific plant varies by year).

Production Years:

The TT-R125 platform has been in production for many years, with the 2005 model representing a specific iteration within its lifecycle.

🏆 Awards & Recognition

Industry Awards:

N/A (Specific awards for this model are not typically publicized in a broad sense, but it's a well-regarded model in its segment for reliability and ease of use).

Reliability Perception:

Generally perceived as a reliable and durable machine with proper maintenance.