🏷️ Basic Information Identification Make: Yamaha Model: TZ125 Model Variant: TZ125G1 Production Years Covered: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Generation Generation Code: G1 👋 Introduction Market Position Target Audience: Owners with basic mechanical skills, independent service professionals, and authorized dealer service departments. Value Proposition: Provides factory-level repair and maintenance information to save money and ensure proper upkeep. Key Features Instruction Style: Step-by-step instructions, clear and concise text, supported by diagrams and illustrations. Accuracy: Vehicle-specific information, not generic; same procedures used by authorized technicians. Completeness: Complete and intact, covering all major topics without missing or corrupt parts. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Maintenance, Troubleshooting, Diagnostics Specific Topics: General information, Routine Maintenance, Specifications, Periodic checks and adjustments, Lubrication, Cooling System, Transmission, Drive Chain, Sprockets, Engine Specifications, Engine Removal and Installation, Fuel system, Steering System, Shocks, Body Work, Intake & Exhaust, Electrical system, Advanced Troubleshooting, Wiring Diagram Page Count Estimated Page Count: Varies, typically comprehensive for workshop manuals of this era (estimate 300-500 pages based on content listed) Manual Type Manual Type: Factory Service Repair Workshop Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine System: Complete overhaul, disassembly, assembly, tuning, troubleshooting, specifications, cooling system, lubrication. Transmission System: Gearbox inspection, repair, maintenance, lubrication, gear ratios, removal and installation. Chassis Suspension Steering: Front and rear suspension systems, shock absorber service and adjustment, steering head bearing maintenance, steering system components. Fuel System: Carburetor tuning, cleaning, and overhaul, fuel tank maintenance, fuel lines, fuel pump (if applicable). Electrical System: Ignition system, lighting, charging system, wiring diagrams, component testing, troubleshooting. Bodywork Frame: Body panel removal and installation, fairings, seat, handlebars, general inspection. Braking System: Brake caliper service, brake fluid replacement, brake line inspection, master cylinder maintenance. Drive Train: Drive chain adjustment, lubrication, sprocket replacement, maintenance. Procedures Included Maintenance Procedures: Oil changes, filter replacements, spark plug service, chain adjustments, lubrication points, air filter cleaning/replacement. Repair Procedures: Engine rebuild, transmission overhaul, suspension component replacement, electrical component repair, bodywork repair. Troubleshooting Diagnostics: Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides. Assembly Disassembly: Detailed instructions for removing and installing major components like the engine, transmission, suspension, and body panels. Technical Depth Depth Of Information: Comprehensive, covering basic maintenance to full engine and transmission rebuilds, including advanced electrical diagnostics. Diagrams Illustrations: Includes detailed diagrams, illustrations, and exploded views for clarity. Schematics: Comprehensive wiring schematics for electrical system diagnosis and repair. 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Yes, all pages are printable. Digital Viewing: Viewable on PC, Mac, phones, and ebook readers (e.g., Kindle). Binding Type Binding: N/A (Digital PDF download) Paper Type Paper Quality: N/A (Digital PDF download - user prints as needed) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder (This is typical for TZ125, specific details would be in the manual). Displacement: 125cc (This is inferred from the model name 'TZ125'). Performance Horsepower Range: Typical for 125cc racing engines of this era: 35-45 HP (Specifics in manual). Torque Range: Low to mid-range, focused on peak power delivery (Specifics in manual). Fuel System Fuel Delivery: Carburetor(s) (Likely Mikuni VM series, specific model in manual). Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) (Typical for this era). Cooling System Cooling Method: Liquid-cooled (Typical for TZ race bikes). 🔧 Transmission Standard Transmission Type: 6-speed constant mesh sequential (Standard for TZ125). Optional Optional Gearbox: N/A (Race bikes typically had fixed configurations, though factory options might exist). Features Clutch Type: Wet, multi-disc (Standard for this type of motorcycle). 📐 Dimensions Weights Dry Weight: Approximately 75-80 kg (Typical for TZ125). Wet Weight: Varies with fluids, estimate ~85 kg (Specifics in manual). Capacities Fuel Tank Capacity: Typically around 10-12 liters for race bikes (Specifics in manual). 🛡️ Safety Features Ratings Safety Certification: N/A (Race vehicle, not typically road-legal with standard safety ratings). 💡 Technology Features Infotainment Infotainment System: N/A (This is a purebred racing motorcycle, lacking typical road-bike infotainment features). Driver Assistance Driver Assistance Features: N/A (No rider assistance electronics typical of modern road bikes). Connectivity Connectivity Options: N/A 🔧 Maintenance Service Intervals Engine Rebuild Interval: Highly dependent on usage and racing conditions, typically requires rebuilds after a set number of hours or race events (Detailed schedule in manual). Chain Adjustment: Check and adjust as needed before each riding session or after significant use. Fluid Specifications Engine Oil: Specific 2-stroke premix oil or injection oil, Yamaha recommends specific formulations (See manual for exact specifications). Coolant: Specific glycol-based coolant mixture, typically 50/50 with distilled water (See manual for exact specifications). Transmission Oil: Yamalube or equivalent SAE 10W-30 or 20W-40 API SE, SF, SG, SH, SJ (Specific recommendation in manual). Known Issues Carburetor Tuning Sensitivity: Two-stroke engines of this era are sensitive to jetting and tuning, requiring precise adjustments for...