🏷️ Basic Information Identification Make: Yamaha Model: TZ125 Model Code: TZ125G1 Years Covered: 1990-2005 Codes Product Name: Yamaha TZ125 TZ125G1 1990-2005 Workshop Service Repair Manual 👋 Introduction Market Position Purpose: To provide essential repair and service information for Yamaha TZ125G1 owners and technicians. Target Audience: DIY enthusiasts and experienced mechanics working on Yamaha TZ125G1 motorcycles. Competitive Analysis Value Proposition: Inexpensive way to maintain and repair the vehicle, saving on dealership service costs. Key Features Content Focus: Detailed illustrations, diagrams, wiring schematics, specifications, and step-by-step instructions. Accessibility: Printable pages allow for on-site use in the garage or workshop. 📋 Manual Details Coverage Areas Engine: Engine Mechanical System, Engine Electrical System Fuel System: Fuel System Transmission: Clutch System, Manual Transaxle System Drivetrain: Driveshaft and Axle Suspension: Suspension System Steering: Steering System Brakes: Brake System Bodywork: Body Interior and Exterior Electrical: Body Electrical System Safety: Restraint System Emission Control: Emission Control System General Information: General Information, Troubleshooting Page Count Estimated Page Count: Refer to product for exact count, typically comprehensive for a workshop manual Content Depth: Provides comprehensive step-by-step instructions, diagnostic flowcharts, and detailed diagrams. Manual Type Type: Workshop Service Repair Manual / Factory Service Manual Language Language: English Format File Format: PDF Delivery: Instant Download Compatibility: Windows & Mac 📖 Manual Coverage Systems Covered All Systems: Comprehensive coverage of all mechanical, electrical, and body systems. Engine Mechanical: Piston, cylinder, crankshaft, connecting rod, lubrication system, cooling system, starting system. Engine Electrical: Ignition system, charging system (if applicable), lighting system, sensors. Emission Control: Details on any emission reduction systems or requirements for specific markets. Procedures Included Maintenance: Routine maintenance, inspections, lubrication, adjustments. Repair: Step-by-step repair procedures for all major components and systems. Troubleshooting: Diagnostic procedures, common problems, and solutions. Diagnostics: Electrical system diagnostics with detailed wiring diagrams. Disassembly Assembly: Complete instructions for disassembling and reassembling all vehicle components. Troubleshooting Electrical: Combined troubleshooting and electrical service procedures with detailed wiring diagrams. Technical Depth Depth: Detailed for both DIY enthusiasts and experienced mechanics, covering from basic to advanced repairs. Illustrations: Detailed illustrations, diagrams, and photos for all procedures. Wiring Diagrams: Comprehensive wiring schematics for electrical system troubleshooting. Specifications: Essential technical specifications, torque values, clearances, and tolerances. 📊 Manual Specifications File Format Format: PDF Searchability: PDF format generally allows for text searching of keywords and procedures. Print Quality Printability: All pages are printable Zoom Capability: YES Illustration Clarity: Illustrations are described as detailed, guiding users through procedures. Binding Type Binding: Digital (printable) Paper Type Paper Type: N/A (digital format) Requirements Software Requirements: Adobe PDF Reader, WinZip ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled (typical for TZ125) Displacement: 125cc (specific bore/stroke detailed in manual) Carburetion: Details on carburetor type, jetting, and adjustment will be present. Performance Horsepower: Specific HP figures for different model years will be covered. Torque: Specific torque figures for different model years will be covered. Fuel System Fuel Delivery: Information on fuel tank, fuel lines, and pump/gravity feed (as applicable). Fuel Type: Recommended fuel octane rating and oil/fuel mixture (if applicable). 🔧 Transmission Standard Type: Likely a close-ratio, 6-speed constant mesh gearbox (typical for racing motorcycles). Features Clutch Type: Wet, multi-plate clutch details. Gear Ratios: Detailed gear ratios for all speeds will be provided. 📐 Dimensions Exterior Overall Length: Specifications available in the manual. Overall Width: Specifications available in the manual. Wheelbase: Specifications available in the manual. Weights Dry Weight: Specifications available in the manual. Curb Weight: Specifications available in the manual. 🛡️ Safety Features Ratings Safety Features: Focus on mechanical safety aspects, brake system, and chassis integrity. 💡 Technology Features Infotainment Features: As a racing motorcycle, advanced infotainment is not applicable. Focus is on performance-oriented technology. Driver Assistance Features: No electronic driver assistance features typical of modern road motorcycles. Connectivity Features: No connectivity features. 🔧 Maintenance Service Intervals Routine Maintenance: The manual will detail recommended intervals for chain lubrication, air filter cleaning/replacement, spark plug checks, etc. Fluid Specifications Engine Oil: Specific two-stroke oil recommendations (e.g., Yamalube) and mixing ratios will be provided. Coolant: Type and mixture ratio for the liquid cooling system. Gear Oil: Specifications for transmission lubricant. Known Issues Common Wear Items: The manual will provide guidance on inspecting and replacing wear items such as clutch plates, brake pads, and chain/sprockets. Engine Tuning: Information on carburetor tuning, ignition timing, and exhaust system tuning relevant to performance. 📚 Vehicle History Brand Heritage Yamaha Motorsports: Yamaha has a long and successful history in motorcycle racing, particularly in the Grand Prix arena. Model Evolution Tz Series: The TZ series represents Yamaha's line of production-based Grand Prix racing motorcycles. Production Production Period: The TZ125G1 specifically served as Yamaha's entry in the 125cc racing class during the late 1980s and 1990s.