🏷️ Basic Information

Make:

Yamaha

Model:

TT-R125

Year:

2011

Vehicle Type:

Motorcycle (Off-Road/Dirt Bike)

Sub Model:

TT-R125L (Assumed, common variant for this year and model)

Chassis Code:

4GY (Likely, common for TT-R125 series)

Engine Code:

4FU (Likely, for 125cc 4-stroke engine)

👋 Introduction

Target Audience:

Owners and independent repair shops seeking to maintain and repair their 2011 Yamaha TT-R125 motorcycle.

Competitive Advantage:

Provides dealership-level repair information, enabling comprehensive self-maintenance and repair, potentially saving significant costs.

Completeness:

Comprehensive coverage mirroring the official Yamaha dealership service manual.

Accuracy:

Based on official Yamaha documentation, ensuring accuracy of procedures and specifications.

Accessibility:

Digital format provides instant access and portability for use in the garage or workshop.

📋 Manual Details

Manual Type:

Service Repair Manual

Language:

English

Format:

Digital (Likely PDF based on product description)

Estimated Page Count:

250-400 pages (Typical for comprehensive motorcycle service manuals)

📖 Manual Coverage

Engine Overhaul:

Complete engine disassembly, inspection, repair, and reassembly procedures for the 125cc 4-stroke engine.

Fuel System:

Carburetor maintenance, cleaning, adjustment, and troubleshooting; fuel tank and petcock service.

Ignition System:

CDI ignition system components, troubleshooting, and testing; spark plug specifications and replacement.

Lubrication System:

Oil change procedures, oil filter replacement, oil pump inspection, and oil circuit troubleshooting.

Cooling System:

Air-cooled engine design, inspection of cooling fins, and related components.

Transmission And Drivetrain:

Clutch operation, adjustment, and overhaul; gearbox inspection, lubrication, and repair; drive chain maintenance and adjustment.

Suspension System:

Front fork disassembly, service, and fluid replacement; rear shock absorber inspection and adjustment; linkage system maintenance.

Braking System:

Front and rear brake systems (likely drum front, disc rear for this model), including lever, cable, caliper, and pad service and replacement; brake fluid specifications and bleeding procedures.

Electrical System:

Wiring diagrams, battery maintenance and testing, lighting system (headlight, taillight, turn signals if equipped), charging system (stator, rectifier/regulator), and starter motor (if electric start variant).

Chassis And Frame:

Frame inspection, steering head bearing service, swingarm maintenance, and component mounting.

Bodywork And Trim:

Plastic panel removal and installation, seat service, and fender maintenance.

Routine Maintenance:

Detailed procedures for oil changes, air filter cleaning/replacement, chain adjustment, brake checks, tire pressure checks, and general inspection.

Troubleshooting Guides:

Systematic diagnostic charts and procedures for identifying and resolving common operational issues.

Repair Procedures:

Step-by-step instructions for component disassembly, repair, and reassembly across all major vehicle systems.

Component Replacement:

Guidance on replacing wear items and failed components, including torque specifications for critical fasteners.

Wiring Diagrams:

Comprehensive electrical schematics for troubleshooting and repair of the vehicle's electrical system.

Diagnostic Capability:

Covers basic diagnostic checks to advanced troubleshooting for engine performance, electrical faults, and mechanical issues.

Rebuild Procedures:

Detailed instructions for complete engine rebuilds, transmission overhauls, and suspension unit servicing.

Specification Data:

Includes critical technical specifications, tolerances, and torque values required for accurate repairs.

📊 Manual Specifications

Digital Format:

Likely PDF (Portable Document Format) for easy viewing, searching, and printing.

Image Resolution:

High-resolution diagrams and illustrations for clarity of repair procedures.

Text Searchability:

Searchable text content allows for quick access to specific information.

Physical Binding:

N/A (Digital format implies no physical binding)

Physical Paper Type:

N/A (Digital format implies no physical paper type)

⚙️ Engine Specifications

Engine Type:

Four-stroke, SOHC, air-cooled

Displacement:

124cc (Cubic Centimeters)

Bore X Stroke:

54mm x 54.5mm (Typical for TT-R125)

Compression Ratio:

9.5:1 (Typical for TT-R125)

Max Power:

Approximately 10-12 HP (Horsepower) @ 8000 RPM (Estimated for this model year)

Max Torque:

Approximately 9-10 Nm (Newton-Meters) @ 6500 RPM (Estimated for this model year)

Carburetor Type:

Mikuni VM20SS (Likely for TT-R125L)

Fuel Capacity:

1.6 US gallons (6.0 Liters) (Typical for TT-R125)

Fuel Type:

Unleaded gasoline, minimum 87 octane

Oil Type:

Yamaha Genuine Oil 10W-30 SE or SF (or equivalent API SE, SF classification oil)

Oil Capacity:

0.90 Liters (0.95 US qt) without filter change; 0.95 Liters (1.00 US qt) with filter change (Typical)

🔧 Transmission

Transmission Type:

5-speed constant mesh

Transmission Options:

N/A (Standard 5-speed gearbox)

Clutch Type:

Wet, multiple-disc

Final Drive:

O-ring sealed chain

📐 Dimensions

Overall Length:

1855 mm (73.0 in)

Overall Width:

775 mm (30.5 in)

Overall Height:

1085 mm (42.7 in)

Seat Height:

805 mm (31.7 in) (Typical for TT-R125L)

Wheelbase:

1270 mm (50.0 in)

Ground Clearance:

295 mm (11.6 in)

Wet Weight:

82 kg (181 lbs) (Approximate)

Dry Weight:

77 kg (169.7 lbs) (Approximate)

Front Tire Size:

2.50-19 4PR

Rear Tire Size:

3.00-16 4PR

Wheel Type:

Spoked wheels

🛡️ Safety Features

Safety Ratings:

Motorcycle safety is primarily determined by rider skill and adherence to traffic laws. No formal crash test ratings like cars.

Braking Performance:

Front drum brake and rear disc brake provide adequate stopping power for its class.

Lighting:

Headlight, taillight/stoplight, and potentially front/rear position lights for visibility.

Frame Construction:

Steel semi-double cradle frame designed for off-road durability and rider control.

Ergonomics:

Designed for comfortable rider posture and control during off-road riding.

💡 Technology Features

Infotainment System:

N/A - Basic off-road motorcycle, no electronic infotainment features.

Driver Assistance Features:

N/A - Mechanical controls and basic electrical systems only.

Connectivity Options:

N/A - No digital connectivity features.

🔧 Maintenance

Engine Oil Change:

Every 1,000 km (600 miles) or 6 months, whichever comes first.

Oil Filter Replacement:

Every 3,000 km (1,800 miles) or 18 months (if applicable, often part of a kit or separate service).

Air Filter Cleaning:

Every 500 km (300 miles) or 3 months, or more frequently in dusty conditions.

Spark Plug Inspection:

Every 1,000 km (600 miles) or 6 months.

Drive Chain Lubrication:

Every 300 km (180 miles) or after washing/riding in rain.

Drive Chain Adjustment:

Every 500 km (300 miles) or 3 months.

Engine Oil Viscosity:

10W-30

Brake Fluid Type:

DOT 3 (Likely, check specific model requirements if available)

Carburetor Clogging:

Can occur due to stale fuel or debris, leading to starting issues or poor running.

Clutch Slippage:

Can develop over time with aggressive use, requiring adjustment or replacement of clutch plates.

Suspension Wear:

Fork seals and rear shock damping can degrade with use, affecting ride quality and handling.

Throttle Cable Tension:

May require periodic adjustment to ensure smooth throttle operation.

📚 Vehicle History

Yamaha Motorcycles:

Yamaha Motor Company, founded in 1955, has a long and storied history in motorcycle manufacturing, known for innovation, performance, and reliability across various disciplines including motocross and off-road riding.

Tt R Series:

The TT-R line represents Yamaha's commitment to accessible and capable off-road motorcycles, with the TT-R125 serving as a popular entry-level model for youth and recreational riders, evolving over the years with minor updates.

Manufacturing Location:

Primarily manufactured in Japan.

Model Introduction:

The TT-R125 was first introduced in the early 2000s, and the 2011 model represents a refinement of this successful platform.

🏆 Awards & Recognition

Model Awards:

While specific awards for the 2011 model may not be widely publicized, the TT-R125 line is consistently recognized for its reliability, ease of use, and value in the youth and beginner motocross/trail bike segment.

User Reviews:

Generally high user satisfaction for its intended purpose as a fun, durable, and relatively low-maintenance off-road machine.

Emissions Standards:

Meets applicable EPA emissions standards for off-road motorcycles of its era.