Segment:
Entry-level to intermediate off-road/trail motorcycle
Competitors:
Honda CRF100F/150F, Kawasaki KLX110/125, Suzuki DR-Z125
Target Audience:
Beginner riders, youth riders, trail enthusiasts, recreational riders
Ease Of Use:
Designed for user-friendliness and manageable power delivery
Engine:
Complete engine assembly, disassembly, tuning, diagnostics, and repair
Transmission:
Gearbox overhaul, clutch, shift mechanism, and lubrication
Fuel System:
Carburetor tuning and overhaul, fuel tank, fuel lines
Electrical System:
Ignition system, charging system (stator, rectifier/regulator), lighting, starting system (if applicable)
Suspension:
Front fork (telescopic), rear shock absorber, linkage (if applicable), bearing service
Brakes:
Front and rear brake systems (likely drum brakes for this era/model), hydraulic components, pad replacement, bleeding
Chassis And Frame:
Frame inspection, steering head bearings, wheel bearings, swingarm service
Bodywork And Plastics:
Fairings, fenders, seat, fuel tank cover removal and installation
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, spark plug service, air filter cleaning
Troubleshooting:
Diagnostic charts for common problems, symptom-based troubleshooting guides
Rebuilds:
Detailed step-by-step instructions for major component overhauls (e.g., engine, transmission)
Adjustments:
Carburetor idle and mixture, valve lash, clutch and throttle cables
Torque Specifications:
Crucial torque values for critical fasteners throughout the motorcycle
Wiring Diagrams:
Complete electrical system schematics for diagnostics and repairs
Depth:
Extensive, covering from basic maintenance to complete engine rebuilding and advanced troubleshooting.
Engine Type:
Four-stroke, SOHC, Air-cooled
Bore X Stroke:
54mm x 54.5mm
Valve Configuration:
2 valves (intake and exhaust)
Horsepower:
Approx. 10-12 HP (estimated, specific dyno figures vary)
Torque:
Approx. 7-8 lb-ft (estimated)
Carburetor Model:
Mikuni VM20SS (typical)
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
Approximately 1.6 Gallons (6 Liters)
Length:
Approx. 73.2 inches (1860 mm)
Width:
Approx. 31.3 inches (795 mm)
Height:
Approx. 43.7 inches (1110 mm)
Wheelbase:
Approx. 49.2 inches (1250 mm)
Ground Clearance:
Approx. 10.4 inches (265 mm)
Dry Weight:
Approx. 183 lbs (83 kg)
Wet Weight:
Approx. 196 lbs (89 kg)
Crash Test Results:
N/A (Motorcycles are not typically rated by organizations like NHTSA or Euro NCAP)
Braking System:
Front and rear drum brakes (standard for this era)
Lighting:
Headlight, taillight/stoplight, front and rear turn signals (depending on regional regulations)
Oil Change Interval:
Every 1000 km (600 miles) or 6 months, whichever comes first.
Air Filter Cleaning:
Every 600 km (6 months), inspect more frequently in dusty conditions.
Spark Plug Inspection:
Every 1000 km (6 months)
Valve Lash Check:
Every 6000 km (3600 miles) or 24 months.
Engine Oil Grade:
Yamalube 4 (or equivalent SAE 10W-30 API SG or higher)
Engine Oil Capacity:
Approx. 0.9 Liters (0.95 US qt) without filter change, 1.0 Liters (1.05 US qt) with filter change.
Brake Fluid:
DOT 3 or DOT 4 brake fluid (check specific requirements)
Common Wear Items:
Clutch plates, brake shoes, chain and sprockets, suspension seals due to off-road use.
Carburetor Tuning Sensitivity:
Can be sensitive to altitude and temperature changes, requiring periodic adjustment.
Manufacturer:
Yamaha Motor Company, a globally recognized leader in powersports and audio-visual equipment.
Lineage:
The TTR line represents Yamaha's commitment to accessible, fun, and capable off-road motorcycles.
Predecessors:
Evolved from earlier trail bikes, incorporating Yamaha's engineering advancements.
Variants:
Available in kick-start (TTR125) and electric-start (TTR125E) models, along with 'L' versions often indicating larger wheels/longer suspension travel.
Manufacturing Location:
Primarily Japan, with potential assembly in other regions.
