Vehicle Segment:
Recreational Off-Road Motorcycle (Dirt Bike)
Target Rider:
Beginner to intermediate riders, youth riders, trail riding enthusiasts.
Competitors:
Honda CRF125F, Kawasaki KLX125, Suzuki DR-Z125.
Vehicle Strengths:
Reliability, ease of use, accessible powerband, durable construction, good for learning off-road riding techniques.
Manual Value Proposition:
Provides essential technical information for maintaining and repairing the TT-R125, enabling owners to keep their bikes in optimal condition and perform many service tasks themselves, saving on labor costs.
Engine:
Top end, bottom end, lubrication, cooling, fuel system (carburetor), exhaust system, ignition system (CDI).
Transmission:
Clutch, gearbox, shifting mechanism, lubrication.
Chassis:
Frame, suspension (front forks, rear shock absorber), steering system, wheels, tires, brakes (front and rear).
Electrical:
Wiring diagrams, lighting, ignition, charging system (stator, battery if applicable), troubleshooting electrical faults.
Fuel System:
Carburetor disassembly, cleaning, adjustment, fuel tank, fuel lines.
Bodywork:
Body panels, seat, fenders, controls, levers, cables.
Maintenance:
Routine checks, oil changes, filter replacements, chain adjustment, spark plug replacement, brake pad inspection/replacement.
Troubleshooting:
Diagnostic procedures for common issues, fault finding charts.
Repair:
Detailed step-by-step instructions for component disassembly, repair, and reassembly.
Overhaul:
Engine top-end and potentially bottom-end overhaul procedures.
Specifications:
Torque values, clearance specifications, fluid types and capacities, electrical specifications.
Depth Level:
Comprehensive. Covers from basic rider maintenance to in-depth mechanical repair and troubleshooting.
Target Audience:
Professional technicians, experienced DIY mechanics, and enthusiastic owners.
File Type:
Digital (PDF recommended for usability)
Searchability:
Likely text-searchable if a high-quality digital scan/creation.
Printability:
Typically printable, allowing users to create physical copies of relevant sections.
Image Resolution:
Should contain clear, legible diagrams and photographs.
Binding:
N/A (Digital Format)
Paper Quality:
N/A (Digital Format)
Engine Type:
Four-stroke, SOHC, Air-cooled
Bore X Stroke:
54 mm x 54.5 mm
Compression Ratio:
10.5:1
Carburetor:
Mikuni VM20 (likely specification, to be confirmed by manual)
Ignition:
CDI (Capacitor Discharge Ignition)
Horsepower:
Approx. 9-10 HP (estimate, specific manual will confirm)
Torque:
Approx. 9-10 Nm (estimate, specific manual will confirm)
Fuel Type:
Unleaded Gasoline
Fuel Tank Capacity:
6.0 Liters (1.6 Gallons)
Vehicle Safety Focus:
Off-road suitability and rider control, not crash tested for street use.
Braking System:
Drum brakes front and rear for reliable stopping power in off-road conditions.
Suspension Design:
Long-travel suspension for absorbing impacts and maintaining traction on rough terrain.
Frame Construction:
Robust steel frame designed for durability in off-road use.
Infotainment System:
N/A (basic recreational motorcycle, no electronic infotainment)
Driver Assistance Features:
N/A (basic recreational motorcycle, no electronic driver assistance)
Connectivity Options:
N/A (basic recreational motorcycle, no electronic connectivity)
Ignition System:
CDI ignition system provides a reliable spark for combustion.
Oil Change Interval:
Recommended every 1000 km (600 miles) or 6 months, whichever comes first. (Consult manual for exact specification).
Air Filter Cleaning:
Frequent checks and cleaning recommended, especially in dusty conditions. Replace as needed.
Spark Plug Replacement:
Recommended every 5000 km (3000 miles) or annually. (Manual will list specific plug type and gap).
Chain Adjustment:
Check and adjust slack regularly (e.g., every 500 km / 300 miles) as it stretches.
Brake Inspection:
Regular inspection of brake pads and drums for wear.
Engine Oil Type:
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 Liter (1.1 US qt) with filter change. (Manual will confirm precise quantity).
Transmission Oil Type:
Yamalube SAE 10W-30 or equivalent API SG or higher motorcycle oil.
Transmission Oil Capacity:
Approx. 0.7 Liters (0.74 US qt). (Manual will confirm precise quantity).
Common Wear Items:
Clutch plates, brake shoes/pads, tires, chain and sprockets are typical wear items for this type of motorcycle.
Carburetor Performance:
Carburetors can sometimes require cleaning and adjustment due to fuel varnish buildup if the bike sits for extended periods.
Suspension Maintenance:
Regular fork seal inspections and rear shock absorber maintenance are important for optimal performance and longevity.
Yamaha Offroad Legacy:
Yamaha has a long and successful history in off-road motorcycling, with iconic models like the YZ and WR series, building a reputation for performance and reliability.
Tt-R Lineage:
The TT-R line represents Yamaha's entry-level to mid-level recreational dirt bikes, focusing on user-friendliness and accessibility for a wide range of riders. The TT-R125 is a staple in this category, evolving with minor updates over the years.
Model Introduction Year:
The TT-R125 series was introduced in the early 2000s, with the 2008 model representing a continuation of a well-established platform.
Manufacturing Location:
Typically manufactured in Japan or by Yamaha's global production facilities.
Model Reputation:
The TT-R125 is consistently recognized as a user-friendly and dependable entry-level dirt bike, a popular choice for introducing new riders to off-road motorcycling.
Owner Satisfaction:
Generally high owner satisfaction due to its reliability and ease of maintenance.
Emission Standards:
Meets applicable emission standards for its model year and intended market. (Specifics not relevant to manual's core function but implied).
