Segment:
Entry-level to intermediate off-road/trail riding
Target Audience:
Beginners, younger riders, recreational trail riders
Competitors:
Honda CRF100F/CRF125F, Kawasaki KLX125/KLX140, Suzuki DR-Z125
Features:
Reliable air-cooled engine, user-friendly power delivery, robust chassis, accessible seat height
Engine:
Top end, bottom end, cooling, lubrication, ignition, fuel delivery
Transmission:
Clutch, gearbox, shifting mechanism
Suspension:
Front forks (telescopic), rear shock absorber, linkages
Brakes:
Front disc, rear drum, hydraulic system, component service
Electrical System:
Ignition system, lighting, battery, charging system, wiring diagrams
Fuel System:
Carburetor (Mikuni VM series), fuel tank, fuel lines
Exhaust System:
Muffler, header pipe, catalytic converter (if applicable)
Cooling System:
Air-cooled
Frame And Bodywork:
Frame, plastics, seat, handlebars, footpegs
Routine Maintenance:
Oil changes, filter replacement, chain adjustment, brake checks, spark plug service
Engine Overhaul:
Piston replacement, cylinder head service, crankshaft inspection, gasket replacement
Transmission Repair:
Clutch plate replacement, gearbox disassembly and reassembly
Suspension Setup:
Fork oil change, shock absorber adjustments
Carburetor Tuning:
Jetting, idle speed adjustment, float level
Electrical Diagnostics:
Fault finding, component testing, wiring harness repair
Wheel And Tire Service:
Tire replacement, spoke tensioning, wheel balancing
Level:
Comprehensive, suitable for DIY enthusiasts and professional mechanics
Detail Level:
Step-by-step instructions, torque specifications, measurement tolerances, exploded views
Engine Type:
4-stroke, SOHC
Bore X Stroke:
54 mm x 54 mm
Cooling System:
Air-cooled
Horsepower:
Approx. 10-12 HP (Estimate, varies by model variant and tuning)
Torque:
Approx. 7-8 lb-ft (Estimate)
Carburetor:
Mikuni VM20 (typically)
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
1.5 L (0.4 US gal)
Oil Type:
Yamalube 4 (or equivalent SAE 10W-30 API SE, SF, SG, SH, SJ, SL Service Class)
Oil Capacity:
0.9 L (0.95 US qt) (without filter change), 1.0 L (1.05 US qt) (with filter change)
Crash Safety:
N/A (Motorcycle, not subject to standard automotive crash ratings)
Braking System:
Front hydraulic disc brake, Rear drum brake
Lighting:
Headlight, taillight, brake light, turn signals (may vary by market)
Engine Oil Change:
Every 1000 km (600 miles) or 6 months
Oil Filter Replacement:
Every 2000 km (1200 miles) or 12 months
Air Filter Cleaning:
Every 1000 km (600 miles) or as needed in dusty conditions
Spark Plug Check And Gap:
Every 2000 km (1200 miles)
Chain Lubrication And Adjustment:
Every 500 km (300 miles) or as needed
Engine Oil:
SAE 10W-30 API SE, SF, SG, SH, SJ, SL Service Class (Yamalube 4 Recommended)
Brake Fluid:
DOT 3 or DOT 4 (refer to specific manual for precise type)
Fork Oil:
SAE 10W (refer to specific manual for exact type and quantity)
Common Wear Items:
Chain and sprockets, brake pads, tires, air filter clogging, carburetor jet wear (especially with poor fuel quality)
Potential Failures:
Clutch wear, front fork seal leaks, occasional carburetor performance issues due to dirt ingress.
Heritage:
Yamaha Motor Company, established in 1955, has a long and successful history in motorcycle manufacturing, known for innovation, performance, and reliability across various disciplines.
Evolution:
The TTR125 series was introduced to cater to the growing market of smaller displacement, trail-oriented motorcycles, offering an accessible and capable platform for youth and recreational riders. It has seen minor updates over the years but maintained its core characteristics.
Production Years:
Introduced in 2000, continued production with various updates through subsequent years. 2006 represents a specific model year within this lineage.
Manufacturing Location:
Primarily Japan
