🏷️ Basic Information

Make:

Yamaha

Model:

TT-R125

Model Variant:

TT-R125(W), TT-R125E(W), TT-R125LW(W), TT-R125LWE(W)/LEW

Year:

2007

Chassis Code:

Likely 5NP for TT-R125LW, 5WK for TT-R125LWE (specific codes may vary by sub-model and region)

Engine Code:

Likely 5HD (specific to 125cc 4-stroke off-road engine)

👋 Introduction

Market Segment:

Entry-level to intermediate off-road/trail riding motorcycle

Competitors:

Honda CRF100F/CRF125F, Kawasaki KLX110/KLX125, Suzuki DR-Z110/DR-Z125

Intended Use:

Trail riding, recreational off-road, beginner motocross

Target Audience:

Youth riders, beginner adults, recreational riders

Model Variations:

Standard (TT-R125), Electric Start (TT-R125E), Long Wheelbase (TT-R125LW), Long Wheelbase Electric Start (TT-R125LWE/LEW)

📋 Manual Details

Systems Covered:

Engine, Fuel System, Ignition System, Lubrication System, Cooling System, Transmission, Clutch, Chassis, Suspension (Front & Rear), Brakes (Front & Rear), Electrical System, Wiring Diagrams, Troubleshooting, Specifications, Maintenance

Approximate Page Count:

Estimated 300-400 pages (typical for a comprehensive service manual)

Manual Type:

Service Repair Manual

Language:

English

Format:

Digital Download (PDF)

📖 Manual Coverage

Engine Mechanical:

Cylinder Head, Valves, Piston, Crankshaft, Connecting Rod, Crankcase, Oil Pump

Fuel System:

Carburetor (likely Mikuni VM series), Fuel Tank, Fuel Petcock, Fuel Lines

Ignition System:

CDI (Capacitor Discharge Ignition), Spark Plug, Ignition Coil, Stator

Lubrication System:

Oil Pump, Oil Filter, Oil Passages, Oil Capacity

Cooling System:

Air-Cooled Engine (no liquid cooling system)

Transmission Drivetrain:

5-Speed Transmission, Gearbox Internals, Clutch Assembly (Wet Multi-plate), Final Drive (Chain)

Chassis Frame:

Frame Construction, Swingarm, Linkages

Suspension Front:

Telescopic Fork, Fork Oil Specification and Level, Seal Replacement, Inner/Outer Tube Specifications

Suspension Rear:

Monoshock Absorber, Linkage System, Shock Absorber Specifications, Spring Preload Adjustment

Brakes Front:

Hydraulic Disc Brakes, Caliper Assembly, Master Cylinder, Brake Pads, Brake Fluid Type

Brakes Rear:

Drum Brake, Brake Shoe Replacement, Adjustment, Spring Replacement

Electrical System:

Battery, Lighting (Headlight, Taillight, Brake Light), Horn, Starter System (Electric Start on E/LW/LWE/LEW models), Wiring Harness, Fuses

Wiring Diagrams:

Comprehensive color-coded wiring diagrams for all electrical components and circuits

Maintenance Procedures:

Oil Changes, Filter Replacement, Spark Plug Replacement, Air Filter Cleaning/Replacement, Chain Adjustment, Brake Adjustment, Clutch Adjustment, Valve Clearance Check and Adjustment

Repair Procedures:

Engine Top-End Rebuild, Clutch Overhaul, Transmission Disassembly/Reassembly, Carburetor Rebuild, Fork Seal Replacement, Brake System Overhaul, Swingarm Bearing Service, Electrical Component Replacement

Troubleshooting:

Diagnostic procedures for common and uncommon issues related to engine performance, electrical systems, starting problems, braking issues, and suspension behavior

Diagnostic Capabilities:

Detailed troubleshooting charts based on symptoms, electrical diagnostic procedures including resistance and voltage checks

Rebuild Completeness:

Full engine, transmission, and chassis component disassembly and reassembly instructions with torque specifications

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution, printable pages with clear text and diagrams

Binding Type:

N/A (Digital Product)

Paper Type:

N/A (Digital Product)

⚙️ Engine Specifications

Engine Type:

4-Stroke, SOHC, Air-Cooled

Displacement:

124cc

Bore X Stroke:

54 mm x 54.5 mm

Compression Ratio:

9.5:1 (typical)

Valve Clearance Intake:

0.03 - 0.08 mm (cold)

Valve Clearance Exhaust:

0.07 - 0.12 mm (cold)

Starting System:

Kick Starter (all models), Electric Starter (E, LW, LWE, LEW models)

Horsepower:

Approximately 10-12 HP (estimated)

Torque:

Approximately 7-8 lb-ft (estimated)

Carburetor Model:

Mikuni VM20SS (typical)

Fuel Type:

Unleaded Gasoline (minimum 87 octane recommended)

Fuel Tank Capacity:

Approximately 1.6 US gallons (6.0 Liters)

🔧 Transmission

Transmission Type:

Constant Mesh 5-Speed

Clutch Type:

Wet, Multi-plate

Final Drive:

Chain Drive (520 O-ring chain typical)

Transmission Gear Ratios:

Specific ratios will be detailed in the manual (e.g., 1st: 2.833, 2nd: 1.750, 3rd: 1.333, 4th: 1.045, 5th: 0.875)

Clutch Fluid Type:

Engine Oil

📐 Dimensions

Overall Length:

Approximately 73.4 inches (1865 mm) for standard, 76.6 inches (1945 mm) for LW models

Overall Width:

Approximately 31.1 inches (790 mm)

Overall Height:

Approximately 43.9 inches (1115 mm) for standard, 45.1 inches (1145 mm) for LW models

Wheelbase:

Approximately 49.4 inches (1255 mm) for standard, 50.6 inches (1285 mm) for LW models

Ground Clearance:

Approximately 11.0 inches (280 mm) for standard, 11.8 inches (300 mm) for LW models

Seat Height:

Approximately 31.1 inches (790 mm) for standard, 32.3 inches (820 mm) for LW models

Dry Weight:

Approximately 176 lbs (80 kg) for standard, 185 lbs (84 kg) for electric start models

Wet Weight:

Approximately 190 lbs (86 kg) for standard, 199 lbs (90 kg) for electric start models (estimated)

Front Tire Size:

2.50-17 4PR

Rear Tire Size:

3.00-14 6PR (for standard), 4.60-12 6PR (for LW models)

Wheelbase Wheel Pattern:

Standard spoke wheels

🛡️ Safety Features

Safety Standards:

Meets applicable DOT standards for off-road use (where applicable for specific components like tires, reflectors)

Braking System Type:

Hydraulic front disc, rear drum

Lighting System:

Headlight, Taillight/Brake Light, Front/Rear Reflectors

💡 Technology Features

Infotainment System:

N/A (Basic Off-Road Motorcycle)

Driver Assistance Features:

N/A (Basic Off-Road Motorcycle)

Connectivity Options:

N/A (Basic Off-Road Motorcycle)

🔧 Maintenance

Engine Oil Change Interval:

Every 1000 km or 12 months (whichever comes first), or more frequently for hard riding

Air Filter Cleaning Interval:

Every 1000 km or as needed based on dust conditions

Spark Plug Replacement Interval:

Recommended every 3000 km or based on inspection

Valve Clearance Check Interval:

Every 5000 km or 24 months

Engine Oil Type:

Yamalube 4 (10W-40) or equivalent API SG, JASO MA certified motorcycle oil

Engine Oil Capacity:

Approximately 1.2 Liters (with oil filter replacement)

Brake Fluid Type:

DOT 3 or DOT 4 hydraulic brake fluid

Fork Oil Type:

Yamaha Suspension Oil (e.g., 10W) or equivalent

Common Wear Items:

Clutch plates, brake pads, chain and sprockets, rear suspension bushings, front fork seals

Carburetor Issues:

Can be prone to clogging if fuel is not fresh or tank is dirty; jetting may need adjustment for altitude/modifications

📚 Vehicle History

Brand Focus:

Yamaha's long-standing history in off-road and motorsport, known for reliable and performance-oriented motorcycles

Tt R Series Lineage:

Part of Yamaha's popular TT-R range, known for its user-friendly nature and capability for younger riders and recreational use

Manufacturing Location:

Likely manufactured in Japan or Southeast Asia (common for Yamaha off-road models)

🏆 Awards & Recognition

Industry Awards:

While specific awards for the 2007 model may not be widely publicized, the TT-R line generally receives positive reviews for its reliability and suitability for its intended market.

Reliability Reputation:

Strong reputation for durability and ease of maintenance within its class.