Target Audience:
Enthusiast owners, independent repair shops, and DIY mechanics
Purpose:
To provide comprehensive technical information for the maintenance, repair, and servicing of the Yamaha TTR125 series motorcycles.
Value Proposition:
Offers a cost-effective alternative to dealership service and provides the in-depth knowledge required for effective self-maintenance.
Completeness:
Includes both service/repair procedures and a parts catalog for easy part identification.
Diagnostic Support:
Provides troubleshooting guides to help identify and resolve common issues.
Primary Coverage:
Workshop Service Repair and Parts Catalog
Models Covered:
TTR125, TT-R125E, TT-R125LWE
Estimated Page Count:
Extensive (Specific count not provided, but typical for comprehensive workshop manuals)
Type:
Workshop Service Repair Manual and Parts Catalog
Format:
Digital (Likely PDF)
Engine:
Full disassembly, inspection, assembly, tuning, troubleshooting of the 124cc SOHC engine
Transmission:
Gearbox operation, maintenance, repair, and troubleshooting
Fuel System:
Carburetor (Teikei Y24P or similar) disassembly, cleaning, adjustment, and troubleshooting; fuel tank, lines, and petcock
Ignition System:
CDI ignition system, spark plug specifications, testing and replacement
Electrical System:
Wiring diagrams, lighting, charging system (stator, regulator/rectifier), battery maintenance, starter system (for electric start models)
Suspension:
Front telescopic forks (preload, damping, oil levels, seal replacement), rear monoshock suspension (spring preload adjustment, shock absorber service)
Brakes:
Front and rear brake systems (drum or disc depending on variant), brake pad/shoe inspection and replacement, fluid bleeding, caliper/drum service
Wheels And Tires:
Spoke tightening, wheel bearing inspection, tire pressure, replacement, and balancing
Chassis And Frame:
Frame inspection, headstock bearings, swingarm pivot, general chassis components
Bodywork And Trim:
Fenders, plastics, seat, fuel tank removal and installation
Maintenance:
Scheduled maintenance tasks, oil changes, filter replacements, chain adjustment, brake adjustments, general lubrication
Repair:
Detailed step-by-step repair instructions for all major and minor components
Troubleshooting:
Diagnostic flowcharts and symptom-based troubleshooting for common issues
Disassembly Assembly:
Comprehensive instructions for dismantling and reassembling all vehicle systems
Wiring Diagrams:
Detailed electrical schematics for various model configurations
Parts Catalog:
Exploded views of components with part numbers and quantities
Depth:
Comprehensive: Covers everything from basic maintenance to complete engine and transmission rebuilds, including diagnostics and electrical troubleshooting.
Engine Type:
124 cc, air-cooled, SOHC, 4-stroke, single-cylinder
Bore X Stroke:
54.0 mm x 54.5 mm (typical for this engine family)
Compression Ratio:
9.5:1 (typical, check manual for exact spec)
Valve Configuration:
SOHC (Single Overhead Camshaft) with 2 valves
Horsepower:
~10-12 HP (estimated, actual varies by sub-model and tuning)
Torque:
~7-8 lb-ft (estimated, actual varies by sub-model and tuning)
Carburetor Type:
Teikei Y24P (or similar 24mm constant velocity carburetor)
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 API SG or higher, JASO MA)
Oil Capacity:
Approx. 1.3 Liters (with filter change)
Crash Test Ratings:
N/A (Motorcycle, not subject to standard automotive crash testing)
Brakes:
Front disc brake, Rear drum brake (typical for LWE/E variants); both drum on base TTR125.
Lighting:
Headlight, taillight/stoplight, turn signals (depending on sub-model and market)
Frame Construction:
Steel diamond frame
Engine Oil Change:
Every 3,000 km (1,800 miles) or 6 months (whichever comes first); or more frequently for severe use.
Air Filter Cleaning:
Every 1,000 km (600 miles) or more frequently in dusty conditions.
Spark Plug Inspection:
Every 3,000 km (1,800 miles)
Valve Clearance Check:
Every 6,000 km (3,600 miles)
Chain Lubrication Adjustment:
Every 500 km (300 miles) or after washing/riding in rain.
Engine Oil:
Yamalube 4 (or equivalent SAE 10W-40 API SG or higher, JASO MA)
Brake Fluid:
DOT 3 or DOT 4 (for disc brake models)
Fork Oil:
Yamaha Fork Oil G-10 or equivalent SAE 10W
Common Wear Items:
Clutch plates, brake pads/shoes, chain and sprockets, tires, air filter.
Carburetor Tuning:
Can be sensitive to altitude and temperature changes; require periodic cleaning and adjustment.
Suspension Wear:
Fork seals can leak over time, rear shock absorber may lose damping effectiveness.
Manufacturer:
Yamaha Motor Company, known for performance motorcycles and innovation.
Development Focus:
Designed as a versatile trail bike, offering ease of use, reliability, and capability for novice to intermediate riders in off-road environments.
Production Period:
Introduced in the early 2000s, with ongoing production and updates.
Manufacturing Location:
Japan (primary, with potential assembly in other regions)
