Target Audience:
Yamaha TT-R125 owners, mechanics, technicians, and enthusiasts.
Purpose:
To provide comprehensive repair, maintenance, and diagnostic information for the specified Yamaha TT-R125 models.
Manual Quality:
Factory-level detail, superior to generic aftermarket guides.
Completeness:
100% complete, covering all aspects of service and repair.
Illustrations:
Includes detailed exploded views and step-by-step diagrams.
Engine:
Complete engine overhaul, disassembly, assembly, inspection, tuning, carburetion, ignition system, lubrication system, cooling system (air-cooled).
Transmission:
Gearbox inspection, maintenance, repair, clutch operation, shift mechanism.
Chassis:
Frame inspection, front suspension (forks), rear suspension (shock absorber, swingarm), steering system, wheels, hubs, spokes, bearings.
Brakes:
Front and rear brake systems (drum or disc depending on variant), hydraulic components, brake pad replacement, bleeding procedures.
Electrical:
Wiring diagrams, lighting system, ignition system components, battery, charging system (if applicable), troubleshooting electrical faults.
Fuel System:
Carburetor model and tuning, fuel lines, fuel tank, fuel petcock.
Bodywork:
Plastic body panels, seat, fenders, handle bars, controls.
Maintenance:
Regular maintenance checks, oil changes, filter replacements, chain adjustment, spark plug service, valve clearance adjustment.
Troubleshooting:
Diagnostic charts for common problems, symptom-based troubleshooting guides, electrical system diagnostics.
Repair:
Step-by-step instructions for component removal, installation, and repair for all major vehicle systems.
Rebuilds:
Comprehensive instructions for engine and transmission component rebuilding.
Specifications:
Torque specifications for critical fasteners, engine tolerances, fluid capacities, wiring diagrams.
Depth:
Expert level. Covers everything from routine maintenance to complete engine and chassis rebuilds.
File Type:
Portable Document Format (PDF)
Searchability:
Fully searchable text for quick information retrieval.
Resolution:
High-resolution scans for clear image reproduction.
Illustrations:
Detailed, factory-quality illustrations and diagrams.
Binding:
N/A (Digital format)
Paper:
N/A (Digital format)
Type:
Four-stroke, SOHC, Air-cooled
Bore X Stroke:
54 mm x 54.5 mm
Valve Clearance Intake:
0.08 - 0.12 mm (Cold)
Valve Clearance Exhaust:
0.12 - 0.16 mm (Cold)
Horsepower Approx:
Approx. 10-12 HP (varies slightly by specific model variant and tuning)
Torque Approx:
Approx. 7-8 lb-ft (varies slightly)
Carburetor Model:
Mikuni VM20SS (typical)
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Crash Test Ratings:
N/A (Off-road motorcycle, not subject to automotive crash testing standards)
Brakes:
Drum brakes front and rear (standard), disc brake front (some variants, e.g., TT-R125LWE).
Frame Construction:
Steel semi-double cradle frame for durability.
Engine Oil Change:
Every 1000 km or 6 months, whichever comes first.
Air Filter Cleaning:
Every 500 km or as needed based on operating conditions.
Spark Plug Inspection:
Every 1000 km.
Chain Lubrication Adjustment:
Every 300 km or as needed.
Valve Clearance Check:
Every 4000 km.
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 10W-30 API SG or higher.
Engine Oil Capacity:
1.20 L (without filter change), 1.30 L (with filter change).
Brake Fluid Type:
DOT 3 or DOT 4.
Carburetor Fouling:
Can occur with infrequent use or poor fuel quality, requires cleaning and adjustment.
Suspension Wear:
Bushings and seals in forks and shock can wear over time, especially with aggressive riding.
Clutch Slippage:
Can occur from excessive use or worn clutch plates/springs.
Manufacturer:
Yamaha Motor Corporation, known for performance and reliability in motorcycles and powersports.
Tt R Lineage:
Part of Yamaha's popular TT-R line of off-road recreational motorcycles, designed for youth and entry-level riders.
Introduction Year:
The TT-R125 platform was introduced prior to 2005, with continuous updates.
Manufacturing Location:
Primarily Japan and other Yamaha global manufacturing facilities.