Market Segment:
Entry-level off-road/trail motorcycle, popular for youth riders and recreational trail use.
Competitors:
Honda CRF100F/CRF125F, Kawasaki KLX110/KLX125, Suzuki DR-Z125.
Features Overview:
Reliable, easy-to-maintain 125cc four-stroke engine, accessible performance, and various configurations (kick-start, electric start, standard/long wheelbases).
Primary Coverage:
Service and Repair for 2007 Yamaha TT-R125 series motorcycles.
Estimated Page Count:
300+
Type:
Factory Service Manual / Workshop Manual
Completeness:
Original Factory Service Manual, providing the most accurate and complete information available.
Format:
Downloadable Digital Format (PDF)
File Format Details:
Searchable PDF, allowing for quick access to specific topics and troubleshooting guides.
Engine:
Complete engine overhaul, including carburetor, ignition, lubrication, cooling, and exhaust systems.
Transmission:
Clutch, gearbox, shift mechanism, and final drive maintenance and repair.
Chassis:
Frame, suspension (front forks, rear shock), steering, and swingarm.
Electrical:
Wiring diagrams, battery, charging system, ignition system, lighting, and controls.
Brakes:
Front and rear brake systems (drum/disc depending on variant), including hydraulic components and adjustments.
Fuel System:
Fuel tank, fuel lines, and carburetor (Mikuni VM20/VM22 likely).
Maintenance:
Regular service intervals, oil changes, filter replacements, chain adjustment, and general inspections.
Troubleshooting:
Diagnostic procedures for common starting, running, and electrical issues.
Repair:
Detailed step-by-step instructions for component disassembly, repair, and reassembly.
Special Tools:
Identification and usage of special tools required for specific procedures.
Engine Rebuild:
Detailed procedures for engine disassembly, inspection, measurement, and reassembly of all internal components.
Suspension Rebuild:
Instructions for fork seal replacement, oil changes, and rear shock absorber servicing.
Electrical Diagnostics:
Comprehensive wiring diagrams and troubleshooting guides for the electrical system, including lighting, ignition, and charging.
Depth:
Comprehensive, covering everything from basic rider maintenance to full engine rebuilds and electrical diagnostics.
Specifications Data:
Includes torque specifications, clearances, measurements, fluid capacities, and other critical technical data.
Engine Type:
Four-stroke, SOHC, air-cooled
Bore X Stroke:
54 mm x 54.5 mm
Compression Ratio:
9.5:1 (approx.)
Horsepower:
Approx. 10-12 HP (estimates, varies by specific model variant and tuning)
Torque:
Approx. 7-8 lb-ft (estimates)
Carburetor:
Mikuni VM20 (TT-R125, TT-R125L) or VM22 (TT-R125E, TT-R125LW, TT-R125LWE) likely, with diaphragm type pump on E versions.
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Ignition System:
CDI (Capacitor Discharge Ignition)
Oil Type:
Yamalube 4 (SAE 10W-30) or equivalent API Service SG type or higher.
Overall Length:
Approx. 1835 mm (72.2 in) for TT-R125LW/LWE, shorter for TT-R125/E
Overall Width:
Approx. 745 mm (29.3 in)
Overall Height:
Approx. 1115 mm (43.9 in) for TT-R125LW/LWE, lower for TT-R125/E
Seat Height:
Approx. 805 mm (31.7 in) for TT-R125LW/LWE, lower for TT-R125/E
Wheelbase:
Approx. 1275 mm (50.2 in) for TT-R125LW/LWE, shorter for TT-R125/E
Dry Weight:
Approx. 82 kg (181 lbs) for TT-R125LW/LWE, slightly less for others.
Fuel Capacity:
6.6 L (1.75 US gal)
Safety Features Overview:
Designed for off-road use, safety is primarily derived from rider skill and adherence to safe riding practices. Standard safety features include robust braking systems and proper ergonomics.
Braking System:
Front: Drum or Disc (depending on variant). Rear: Drum.
Tire Specifications:
Front: 2.50-17 4PR. Rear: 3.00-14 6PR (typical for LW/LWE variants).
Infotainment System:
N/A (This is a basic off-road motorcycle, not equipped with infotainment features).
Driver Assistance Features:
N/A (This is a basic off-road motorcycle, not equipped with driver assistance features).
Connectivity Features:
N/A (This is a basic off-road motorcycle, not equipped with connectivity features).
Oil Change Interval:
Every 1,000 km (600 miles) or 6 months, whichever comes first.
Air Filter Cleaning:
Every 1,000 km (600 miles) or as needed, depending on riding conditions. Replace every 2,000 km (1,200 miles).
Spark Plug Inspection:
Every 1,000 km (600 miles). Replace as needed.
Valve Clearance Check:
Every 4,000 km (2,500 miles).
Engine Oil Capacity:
0.90 L (0.95 US qt) without filter change, 1.00 L (1.05 US qt) with filter change.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Common Wear Items:
Clutch plates, brake shoes/pads, chain and sprockets, and fork seals are common wear items requiring regular inspection and replacement.
Carburetor Tuning:
Carburetor jetting may require adjustment for significant changes in elevation or aftermarket modifications.
Yamaha Motorcycles:
Yamaha Motor Company is a Japanese manufacturer renowned for its high-performance motorcycles, marine products, and musical instruments. Founded in 1955, Yamaha has a long history of innovation in motorcycling.
Tt R Lineage:
The TT-R line represents Yamaha's commitment to reliable and accessible off-road motorcycles. The TT-R125 specifically evolved from smaller displacement dual-sport and trail bikes, offering a step-up in size and capability for younger riders.
Manufacturing Location:
Japan (Primary)
