Segment:
Lightweight, entry-level off-road/trail motorcycle.
Target Audience:
Beginner riders, younger riders, and those seeking a versatile trail bike for recreational use.
Key Competitors:
Honda CRF125F/CRF150F, Kawasaki KLX125/KLX140, Suzuki DR-Z125L.
Vehicle Philosophy:
Reliability, ease of use, and capability for trail riding and light recreational off-roading.
Manual Value Proposition:
Empowers owners to perform all necessary maintenance and repairs, saving on dealership costs and maximizing the lifespan of the motorcycle.
General Coverage:
Complete service, repair, maintenance, troubleshooting, and overhaul of the 2009 Yamaha TT-R125EY/LEY motorcycle.
Estimated Page Count:
Refer to actual product for precise page count; typical for this era and coverage would be 300-500 pages.
Type:
Service Repair Manual
Format:
Digital (likely PDF, based on typical sales for this product)
Engine:
Complete engine disassembly, assembly, inspection, repair, and troubleshooting. Includes cylinder head, piston, crankshaft, valves, timing, lubrication system, cooling system (if applicable).
Transmission:
Inspection, maintenance, and repair of the gearbox, clutch assembly, and shift mechanism.
Fuel System:
Carburetor overhaul, adjustment, troubleshooting, fuel tank, fuel lines, and fuel filter.
Ignition System:
CDI unit, spark plug, ignition timing, and related components.
Electrical System:
Wiring diagrams, battery, charging system (stator, rectifier/regulator), lighting, switches, and fuses.
Frame And Suspension:
Front fork (telescopic), rear shock absorber, swingarm, linkage (if applicable), bearings, and frame components.
Brakes:
Front and rear brake systems (likely drum or disc depending on variant), brake levers, pedals, lines, calipers, master cylinders, and bleeding procedures.
Wheels And Tires:
Wheel assembly, spokes, hubs, bearings, tire selection, and installation.
Bodywork And Controls:
Seat, fenders, handlebars, levers, footpegs, and plastic body panels.
Maintenance:
Scheduled maintenance, oil changes, filter replacement, chain adjustment, lubrication, brake pad inspection, spark plug checks.
Troubleshooting:
Diagnostic procedures for common problems, symptom-based troubleshooting guides.
Repair:
Step-by-step repair instructions for all major components and systems.
Rebuild:
Complete engine and component rebuild procedures.
Torque Specifications:
Essential torque values for all critical fasteners.
Diagrams And Illustrations:
Detailed pictures and exploded part diagrams for easy identification and assembly.
Depth:
Comprehensive, covering everything from basic routine maintenance to complete engine overhauls and advanced diagnostics.
Print Quality Digital:
High-resolution scans of original factory manual pages, ensuring clarity of text and images.
Binding Type Physical Equivalent:
Perfect bound or saddle-stitched (for original printed manuals)
Paper Type Physical Equivalent:
Durable paper stock suitable for workshop environments
Engine Type:
Four-stroke, SOHC, air-cooled
Displacement:
124 cc (cubic centimeters)
Bore X Stroke:
54.0 mm x 54.5 mm (typical for this engine family)
Compression Ratio:
Approximately 9.5:1 (typical for this engine family)
Valve Train:
SOHC, 2 valves
Horsepower:
Estimated 10-12 HP (at crankshaft, figures vary by region and tuning)
Torque:
Estimated 7-9 lb-ft (at crankshaft, figures vary by region and tuning)
Carburetor Type:
Mikuni VM20SS or similar (typical for this model)
Fuel Type:
Unleaded gasoline
Oil Type:
API SE, SF, or SG; SAE 10W-30 or 20W-40 motorcycle oil
Oil Capacity:
Approximately 1.0 - 1.2 liters (check manual for exact figure with filter change)
Length:
Approximately 1840 mm (72.4 in)
Width:
Approximately 775 mm (30.5 in)
Height:
Approximately 1095 mm (43.1 in)
Wheelbase:
Approximately 1270 mm (50.0 in)
Seat Height:
Approximately 805 mm (31.7 in)
Dry Weight:
Approximately 80 kg (176 lbs)
Curb Weight:
Approximately 85 kg (187 lbs) (with all necessary fluids and a full tank)
Cargo Capacity:
N/A (designed for off-road use, no integrated cargo system)
Safety Ratings:
N/A (Motorcycles are not typically assigned NHTSA or Euro NCAP crash test ratings)
Braking System:
Hydraulic disc front brake, drum rear brake (LEY variant likely has disc front and rear).
Tires:
Knobby off-road tires designed for grip on loose surfaces.
Lighting:
Headlight, taillight, brake light, turn signals (if equipped, depending on regional spec).
Oil Change Interval:
Every 1,000 km (600 miles) or 6 months, whichever comes first (refer to manual for exact specification).
Air Filter Cleaning:
Every 1,000 km (600 miles) or more frequently in dusty conditions.
Spark Plug Replacement:
Every 5,000 km (3,000 miles) or as needed based on inspection.
Valve Clearance Check:
Every 5,000 km (3,000 miles) or annually.
Engine Oil Specification:
API SE, SF, or SG; SAE 10W-30 or 20W-40 motorcycle oil.
Brake Fluid Specification:
DOT 4 (verify in manual, especially for disc brakes)
Common Wear Items:
Clutch plates, brake pads/shoes, chain and sprockets, wheel bearings, fork seals.
Carburetor Trouble:
Clogged jets due to fuel varnish, particularly if the bike sits for extended periods without fuel stabilizer.
Electrical Gremlins:
Corroded connectors or failing rectifier/regulator can cause charging issues (less common on simpler models but possible).
Heritage Focus:
Yamaha has a long-standing history in off-road motorcycle development, with iconic models in motocross and enduro racing.
Tt-R Series:
The TT-R line is Yamaha's range of four-stroke off-road motorcycles, known for their user-friendliness and reliability across various displacements. The TT-R125 has been a staple in this category for many years, evolving to meet rider demands.
Production Period:
The TT-R125 model range has been in production for over a decade, with the 2009 model representing a specific iteration within its lifecycle.
