Market Segment:
Entry-level to intermediate off-road motorcycle, youth/beginner trail bike.
Target Audience:
Beginners, younger riders, recreational trail riders, motocross enthusiasts.
Key Competitors:
Honda CRF100F/CRF150F, Kawasaki KLX110/KLX140, Suzuki DR-Z125.
Vehicle Usp:
Reliability, user-friendliness, low maintenance, accessible performance for learning.
Manual Benefit:
Empowers owners and mechanics with factory-accurate procedures, reducing guesswork and ensuring correct repairs.
Licensing Model:
No extra fees, no expiry dates (perpetual license for digital download).
Engine:
Complete overhaul, disassembly, inspection, assembly, tuning, troubleshooting for all engine components.
Fuel System:
Carburetor (Mikuni VM series typically), fuel lines, fuel pump (if applicable), fuel tank service.
Ignition System:
CDI unit, ignition coil, spark plug specifications, timing adjustments, troubleshooting.
Cooling System:
Air-cooled design, relevant components and inspection.
Transmission:
Gearbox inspection, clutch service, lubrication, gear shift mechanism.
Drivetrain:
Chain and sprockets inspection, adjustment, replacement, hub maintenance.
Suspension:
Front forks (telescopic), rear shock absorber, linkages, bearings, service and adjustments.
Brakes:
Front and rear drum or disc brake systems, hydraulic lines, calipers, master cylinders, brake pad replacement, bleeding procedures.
Wheels Tires:
Wheel bearing service, spoke tensioning, tire pressure recommendations, rim inspection.
Electrical System:
Wiring diagrams, lighting system, battery maintenance, charging system (stator, rectifier/regulator), switchgear, troubleshooting.
Frame Chassis:
Frame inspection, steering head bearing service, swingarm maintenance, peg and lever adjustments.
Bodywork:
Fairings, fenders, seat, fuel tank cover, graphics, replacement and alignment.
Routine Maintenance:
Oil changes, filter replacement, chain lubrication and adjustment, brake adjustments, tire pressure checks.
Troubleshooting:
Diagnostic flowcharts and symptom-based troubleshooting for common issues.
Engine Rebuild:
Complete engine disassembly, component inspection, measurement, clearance checks, reassembly, and break-in procedures.
Suspension Service:
Fork seal replacement, oil changes, shock absorber service and replacement.
Brake System Service:
Pad replacement, caliper service, master cylinder rebuild, bleeding procedures.
Electrical Diagnostics:
Fault finding for starting, lighting, and charging systems using wiring diagrams.
Carburetor Tuning:
Adjustment of idle speed, mixture, and jetting recommendations for different conditions.
Wiring Diagrams:
Detailed electrical schematics for all systems.
Depth Of Coverage:
Comprehensive: Covers all aspects from routine maintenance to complete engine and chassis overhauls.
Diagnostic Capabilities:
Advanced troubleshooting and diagnostic procedures for mechanical and electrical issues.
Special Tools:
Lists and descriptions of specialized tools required for certain procedures.
Engine Type:
Four-stroke, SOHC, Air-cooled
Bore X Stroke:
54 mm x 54.5 mm
Carburetor:
Mikuni VM20 (typical, may vary slightly by specific sub-model)
Ignition:
CDI (Capacitor Discharge Ignition)
Starting System:
Kickstart
Horsepower Estimated:
Approximately 10-12 HP (at crankshaft, depending on tuning and specific variant)
Torque Estimated:
Approximately 7-9 lb-ft (at crankshaft, depending on tuning and specific variant)
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
1.7 Gallons (approx. 6.5 Liters)
Engine Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 API SG or higher motorcycle oil)
Engine Oil Capacity:
Approximately 1.0 - 1.2 Liters (check dipstick)
Crash Safety Rating:
N/A (Motorcycle safety is not typically rated in the same way as cars; focus is on rider protection through gear and handling).
Braking System:
Front drum or disc brake (depending on specific model variant), Rear drum brake.
Handling Characteristics:
Designed for stable, predictable handling for novice riders.
Lighting:
Headlight, taillight/stoplight, front/rear turn signals (market dependent).
Ergonomics:
Designed for comfortable rider positioning and control.
Engine Oil Change:
Every 1000 km (600 miles) or 6 months, whichever comes first.
Air Filter Cleaning:
Every 1000 km (600 miles), or more frequently in dusty conditions.
Spark Plug Inspection:
Every 3000 km (1800 miles).
Valve Clearance Check:
Every 6000 km (3600 miles).
Chain Adjustment Lubrication:
Every 500 km (300 miles), or after washing/wet riding.
Brake Fluid Type:
DOT 3 or DOT 4 (check master cylinder cap)
Common Wear Items:
Clutch plates, chain and sprockets, front fork seals, wheel bearings, carburetor jets due to dirt ingress.
Trouble Areas:
Carburetor gumming if not used regularly, kickstart mechanism wear, chain slack management.
Brand Focus:
Yamaha is renowned for its extensive history in motorcycle manufacturing, known for performance, reliability, and innovation across various disciplines, including off-road.
Ttr Lineage:
The TTR line represents Yamaha's entry-level to mid-range off-road models, designed to introduce riders to trail riding and motocross with approachable power and handling.
2005 Updates:
The 2005 model year for the TTR125 saw refinements common to the line, building on established platform; specific major changes typically detailed in factory service bulletins.
Manufacturing Origin:
Primarily manufactured in Japan or under Yamaha's global manufacturing umbrella.
Production Period:
The TTR125 model has been in continuous production for many years, with the 2005 model being part of a long-standing and popular generation.