🏷️ Basic Information Identification Make: Yamaha Model: TW125 Year: 1999 Vehicle Type: Dual-sport Motorcycle Engine Type: 4-stroke, Single-cylinder, SOHC, 2-valve Codes Chassis Code: Likely 5MH or similar prefix (specific chassis code not provided in product info) Engine Code: Likely 5RS or similar prefix (specific engine code not provided in product info) 👋 Introduction Market Position Purpose: To provide comprehensive repair and service information for the Yamaha TW125 1999 Competitive Analysis Value Proposition: Inexpensive way to keep the vehicle working properly, saving on professional mechanic costs Key Features Key Manual Features: Detailed illustrations, diagrams, wiring schematics, specifications, step-by-step instructions, printable pages, troubleshooting guides 📋 Manual Details Coverage Areas Systems Covered: General Information, Engine Mechanical System, Engine Electrical System, Emission Control System, Fuel System, Suspension System, Clutch System, Manual Transaxle System, Driveshaft and Axle, Steering System, Brake System, Body Interior and Exterior, Body Electrical System, Restraint System Page Count Estimated Page Count: Hundreds (typical for a comprehensive workshop manual) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Specifications Print Quality: Fully Printable Zoom Functionality: Yes (Zoom IN/OUT) Requirements Software Requirements: Adobe PDF Reader, WinZip Operating System Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine Mechanical: Yes (detailed coverage) Engine Electrical: Yes (troubleshooting and diagnostics included) Emission Control: Yes Fuel System: Yes (carburetor details) Suspension: Yes (front forks and rear shock absorber) Clutch: Yes (operation and maintenance) Transmission: Yes (Manual Transaxle System) Drivetrain: Yes (Driveshaft and Axle) Steering: Yes Brakes: Yes (front and rear) Bodywork Interior Exterior: Yes Body Electrical: Yes Restraint System: Yes (relevant to motorcycle controls and safety features) Procedures Included Maintenance: Yes (detailed step-by-step instructions) Troubleshooting: Yes (specifically for electrical system) Repair: Yes (comprehensive repair procedures) Diagnostics: Yes (especially for electrical issues) Technical Depth Depth Of Information: Covers every detail for the Yamaha TW125 1999 Target Audience: Do-it-yourselfer and experienced mechanic Visual Aids: Detailed illustrations, diagrams, wiring schematics, and photos Instruction Format: Step-by-step instructions with numbered steps and bold figure numbers Critical Information: Notes, cautions, and warnings throughout each chapter Information Accessibility: Numbered table of contents for quick navigation 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Fully printable, allowing users to print only necessary pages Binding Type Binding Type: N/A (Digital PDF Download) Paper Type Paper Type: N/A (Digital PDF Download) ⚙️ Engine Specifications Primary Engine Engine Family: 4-stroke, Air-cooled, SOHC Displacement: 124cc Bore X Stroke: 54.0 mm x 54.0 mm (typical for this engine) Compression Ratio: 9.5:1 (typical) Performance Horsepower: Approx. 10-12 HP (specific figure varies slightly by region and tuning) Torque: Approx. 9-10 Nm (specific figure varies) Fuel System Fuel Delivery: Carburetor (likely Mikuni VM20 or similar) Fuel Type: Unleaded Gasoline Lubrication Oil Type: Yamaha Genuine Motor Oil (e.g., 10W-40 or 20W-40, refer to manual for specific grade) 🔧 Transmission Standard Transmission Type: Manual Gear Selection: 5-speed constant mesh Features Clutch Type: Wet, multiple-disc Final Drive: Chain Drive 📐 Dimensions Exterior Length: Approx. 2015 mm Width: Approx. 805 mm Height: Approx. 1095 mm Weights Dry Weight: Approx. 112 kg Wet Weight: Approx. 117 kg (with oil and full fuel tank, estimated) Fuel Tank Capacity: Approx. 9.0 Liters Wheels Tires Front Tire Size: 2.75-21 4PR Rear Tire Size: 180/80-14M/C 4PR (unique fat rear tire) 🛡️ Safety Features Ratings Safety Standards: Adheres to relevant motorcycle safety regulations for its era Active Features Braking System: Front: Disc Brake, Rear: Drum Brake Passive Features Lighting: Headlight, Taillight, Turn Signals 💡 Technology Features Infotainment Instrument Cluster: Analog speedometer, odometer, and indicator lights. Driver Assistance Rider Aids: None (basic motorcycle technology for its era). Connectivity Connectivity Features: None. 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual, typically every 3,000-5,000 km or 6 months. Spark Plug Replacement: Refer to manual, typically every 10,000-12,000 km. Valve Clearance Check: Refer to manual, typically every 10,000-12,000 km. Fluid Specifications Engine Oil Capacity: Approx. 1.2 - 1.4 Liters (with filter change, refer to manual for exact amount). Brake Fluid Type: DOT 3 or DOT 4 (refer to manual for exact specification). Known Issues Common Wear Items: Tires, brake pads, spark plug, air filter due to its nature as a versatile commuter and trail bike. 📚 Vehicle History Brand Heritage Brand Focus: Yamaha is renowned for its extensive range of motorcycles, audio equipment, and musical instruments. Model Evolution Tw Series Concept: The TW series is known for its distinctive fat rear tire, providing excellent traction and a unique aesthetic, designed for off-road and casual riding. Production Production Period For Model: The TW125 was produced from 1999 to 2003, later succeeded by the TW200 and TW225 in various markets.