Model Variants:
TT-R125, TT-R125L, TT-R125E, TT-R125LE
Model Codes:
TTR125, TT-R125 (various sub-model designations)
Model Years Covered:
2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Category:
Entry-level to Intermediate off-road/dirt bike, popular for youth riders, trail riding, and recreational motocross.
Competitors:
Honda CRF100F/125F, Kawasaki KLX110/125, Suzuki DR-Z125. The TT-R125 is known for its reliable air-cooled engine and user-friendly nature.
Design Philosophy:
Designed to be a versatile and approachable off-road machine, balancing performance with ease of use and maintenance for younger or less experienced riders.
Model Variants Distinction:
L (Large wheel), E (Electric start), LE (Electric start, Large wheel) variants offer different configurations to suit rider height and preference for starting method.
Coverage Scope:
Comprehensive Service and Repair for all TT-R125, TT-R125L, TT-R125E, TT-R125LE models from 2000-2012. Includes 11 individual manuals specific to each model year, ensuring precise information.
Total Pages:
Estimated 1000+ pages (aggregate across 11 manuals)
Type:
Service and Repair Manual
Format:
Digital (likely PDF, often delivered instantly)
Engine:
Full engine disassembly, assembly, tuning, diagnostics, piston, cylinder, valve train, carburetor (Mikuni VM20SS or similar), ignition system (CDI), lubrication system.
Transmission:
Clutch operation, gearbox inspection and repair, shift mechanism, transmission oil specifications and change intervals.
Chassis:
Frame inspection, front suspension (forks - hydraulic damping, seals, oil), rear suspension (monoshock, linkage, spring preload), steering system (headset bearings).
Brakes:
Front and rear brake systems (drum or disc depending on variant), caliper service, master cylinder, brake fluid specifications, bleeding procedures.
Electrical:
Wiring diagrams for all electrical components, lighting system, ignition coil, stator, battery charging system, troubleshooting electrical faults, component testing.
Fuel System:
Fuel tank, fuel lines, carburetor adjustments and cleaning, fuel petcock operation.
Cooling System:
Air-cooled engine, focus on proper airflow and fin cleaning.
Bodywork And Plastics:
Fairings, fenders, seat removal and installation, handlebar, grips, levers.
Maintenance:
Regular maintenance schedules, oil changes, filter replacements, chain adjustment and lubrication, spark plug replacement, air filter cleaning/replacement, brake adjustments.
Troubleshooting:
Diagnostic flowcharts for common problems (e.g., no start, poor running, braking issues, electrical faults), symptom-based troubleshooting guides.
Repair:
Step-by-step repair instructions for all major and minor components, including engine rebuild, transmission overhaul, suspension service, carburetor repair.
Diagnostics:
Identification of potential issues, measurement specifications (e.g., compression, clearances), component testing procedures.
Depth:
Extremely high. Covers everything from basic rider maintenance to complete engine and chassis overhauls, including detailed specifications and torque values for professional-level repairs.
Searchability:
Likely searchable text within PDF files, allowing for quick information retrieval.
Print Quality:
High-resolution digital scans or original factory document quality, suitable for printing specific sections or the entire manual.
Diagrams And Illustrations:
Includes detailed exploded diagrams, wiring schematics, and step-by-step photographic guides (where applicable in original documentation).
Binding:
N/A (Digital Format)
Paper Quality:
N/A (Digital Format)
Engine Type:
4-stroke, SOHC, air-cooled
Displacement:
124cc (approximately, depending on exact sub-model) - Specific bore and stroke typically around 54.0 mm x 54.5 mm
Bore X Stroke:
54.0 mm x 54.5 mm (typical)
Compression Ratio:
Typically around 9.5:1 to 10.0:1
Valve Clearance Intake Cold:
0.04-0.08 mm (check manual for exact spec)
Valve Clearance Exhaust Cold:
0.08-0.12 mm (check manual for exact spec)
Horsepower:
Estimated 10-12 HP (actual figures vary by year and tuning)
Torque:
Estimated 7-8 lb-ft (actual figures vary)
Carburetor Type:
Mikuni VM20SS (or similar 20mm carburetor) - manual will detail jetting and adjustments.
Fuel Type:
Unleaded gasoline, 87 octane or higher recommended.
Fuel Tank Capacity:
Approximately 1.6 gallons (6.0 L)
Oil Type:
Yamalube 4 (or equivalent motorcycle-specific 4-stroke engine oil) SAE 10W-30 or 10W-40.
Oil Capacity:
Approximately 1.15 US qt (1.08 L) without filter change, 1.25 US qt (1.18 L) with filter change.
Overall Length:
Approx. 73.0 - 75.2 inches (1855 - 1910 mm) depending on wheel size
Overall Width:
Approx. 31.5 inches (800 mm)
Overall Height:
Approx. 43.5 - 45.5 inches (1105 - 1155 mm) depending on seat height/handlebar configuration
Seat Height:
Approx. 31.7 - 33.7 inches (805 - 855 mm) depending on wheel size and suspension settings
Wheelbase:
Approx. 49.4 - 51.2 inches (1255 - 1300 mm) depending on wheel size
Wet Weight:
Approx. 200 - 215 lbs (91 - 98 kg) depending on model variant and fluid levels
Dry Weight:
Approx. 187 - 200 lbs (85 - 91 kg)
Ground Clearance:
Approx. 9.1 - 10.6 inches (230 - 270 mm) depending on model variant
Safety Certification:
N/A (Off-road vehicle, not subject to typical road vehicle safety standards)
Braking System Description:
Effective front and rear braking, often a front disc and rear drum or both disc depending on the variant. Manual details proper brake fluid and maintenance.
Frame Construction:
Steel semi-double cradle frame for durability and rider confidence.
Engine Oil Change:
Every 1000 km (600 miles) or 6 months, whichever comes first.
Air Filter Cleaning:
Every 500 km (300 miles) or more frequently in dusty conditions.
Spark Plug Inspection Replacement:
Inspect every 1000 km (600 miles), replace as needed.
Chain Lubrication Adjustment:
Every 500 km (300 miles) or after washing/riding in wet conditions. Check tension regularly.
Valve Clearance Check:
Every 6000 km (3700 miles) or 24 months.
Engine Oil Viscosity:
SAE 10W-30 or SAE 10W-40
Engine Oil Standard:
JASO MA or MA2, API SG or higher
Brake Fluid Type:
DOT 3 or DOT 4 (check manual for specific recommendation)
Common Wear Items:
Clutch plates, brake pads/shoes, chain and sprockets, tires, spark plug, air filter, fork seals.
Potential Carburetor Issues:
Carburetor jets can become clogged with debris over time, leading to starting problems or poor running. Requires regular cleaning and proper fuel management.
Electrical Connections:
While generally reliable, corrosion in electrical connectors can occur in off-road environments. The manual's wiring diagrams are crucial for troubleshooting.
Heritage:
Yamaha has a long and storied history in motocross and off-road racing, with the TT-R line continuing this legacy with accessible, performance-oriented bikes.
Development Focus:
The TT-R125 was developed to fill a gap in the small-displacement off-road market, offering a step up from smaller 50cc and 80cc bikes, with advancements like electric start and larger wheel options.
Manufacturing Location:
Primarily manufactured in Japan by Yamaha Motor Company.
