Target Audience:
Yamaha TTR125 owners, enthusiasts, and independent repair shops performing maintenance and repairs.
Value Proposition:
Provides essential, manufacturer-level technical data to maintain and repair the TTR125, saving costs compared to dealership service.
Manual Advantage:
Comprehensive coverage, detailed diagrams, step-by-step procedures, and troubleshooting guides specific to the TTR125 model.
Primary Coverage:
2004 Yamaha TTR125 (and similar model years/variants)
Extended Coverage Mention:
Compatible with similar years and models, with specific mention of 2000 model availability.
Estimated Page Count:
Likely 300-500 pages (typical for comprehensive service manuals of this era)
Type:
Service Repair Workshop Manual
Format:
Digital (PDF likely, given context of link)
Engine:
Detailed diagnosis, overhaul, and component inspection of the 125cc air-cooled engine.
Fuel System:
Carburetor tuning, cleaning, jetting, and fuel tank/line maintenance.
Ignition System:
CDI unit, spark plug specifications, and troubleshooting.
Transmission:
Clutch operation, gear shifting mechanisms, and lubrication.
Suspension:
Front fork (telescopic) and rear monoshock absorber service, oil changes, and adjustments.
Braking System:
Front and rear drum brake maintenance, adjustment, and inspection.
Electrical System:
Wiring diagrams, lighting, battery maintenance, and troubleshooting of electrical faults.
Frame And Bodywork:
Handlebar replacement, seat removal, fender maintenance, and chassis inspection.
Wheels And Tires:
Spoke tension adjustment, tire pressure recommendations, and wheel bearing maintenance.
Routine Maintenance:
Oil change intervals, spark plug replacement, air filter cleaning/replacement, chain lubrication and adjustment.
Troubleshooting:
Diagnostic procedures for common starting issues, poor running conditions, and electrical problems.
Major Repairs:
Engine rebuild procedures, clutch replacement, suspension overhaul, and brake component servicing.
Adjustments:
Carburetor idle speed and mixture adjustment, clutch lever free play, brake pedal free play.
Depth:
Comprehensive from basic user maintenance to in-depth mechanical overhauls and diagnostics.
Engine Type:
Single-cylinder, SOHC, 2-valve, 4-stroke
Displacement:
124cc (124 cm³)
Bore X Stroke:
54 mm x 54.5 mm
Cooling System:
Air-cooled
Horsepower Estimated:
~10-12 HP (at crankshaft, estimated for the era)
Torque Estimated:
~7-8 lb-ft (at crankshaft, estimated for the era)
Carburetor Model:
Mikuni VM20SS or similar (specific model typically detailed in manual)
Fuel Type:
Unleaded gasoline
Oil Type Specification:
Yamaha recommends SAE 10W-30 or 10W-40 API SE, SF, or SG type motor oil (specific viscosity may vary by climate).
Oil Capacity:
Approx. 1.0 L (without filter change), 1.1 L (with filter change) - check manual for exact spec.
Overall Length:
Approx. 1915 mm (75.4 in) for TTR125LW
Overall Width:
Approx. 780 mm (30.7 in)
Overall Height:
Approx. 1120 mm (44.1 in) for TTR125LW
Seat Height:
Approx. 805 mm (31.7 in) for TTR125LW
Dry Weight:
Approx. 92 kg (203 lbs) for TTR125LW
Fuel Tank Capacity:
Approx. 6.1 L (1.6 US gal)
Safety Certification:
CE, EPA compliance for emissions depending on market.
Braking Control:
Front and rear drum brakes; manual details optimal adjustment and inspection for effective braking.
Chassis Stability:
Robust steel frame, telescopic front forks, and monoshock rear suspension designed for trail riding stability.
Engine Oil Change:
Every 1000 km (600 miles) or 6 months, whichever comes first. Initial break-in oil change often recommended at 100km.
Spark Plug Inspection:
Inspect every 1000 km (600 miles), replace as needed.
Air Filter Cleaning:
Clean every 1000 km (600 miles) or more frequently in dusty conditions. Replace element annually or as needed.
Chain Lubrication Adjustment:
Lubricate and check tension every 500 km (300 miles), adjust as needed.
Fork Oil Type:
Yamaha Fork Oil 10W or equivalent (specific quantity and viscosity detailed in manual).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid (for drum brake systems, manual will specify if any fluid is used in actuating mechanism).
Carburetor Clogging:
Common issue with carbureted engines, especially if fuel is left standing. Manual provides cleaning and adjustment procedures.
Chain Wear:
Regular lubrication and adjustment are crucial to prevent premature chain and sprocket wear.
Suspension Seals:
Over time, fork seals can degrade; manual details fork oil change and seal inspection/replacement.
Yamaha Legacy:
Yamaha has a long-standing reputation for producing reliable and performance-oriented off-road motorcycles.
Ttr Series:
The TTR series is Yamaha's line of beginner-friendly and intermediate trail bikes, known for ease of use and durability.
Ttr125 Intro Year:
The TTR125 model was introduced to the market in the early 2000s (around 2000).
Manufacturing Location:
Typically manufactured in Japan or Southeast Asia by Yamaha Motor Company.
Model Acclaim:
The TTR125 series is generally well-regarded as a reliable and capable entry-level off-road machine.
Industry Perception:
Praised for its user-friendliness and durability, making it a popular choice for youth and beginner riders.
Emissions Compliance:
Meets relevant emissions standards for its production year and market (detailed in manual's environmental section if applicable).
