This manual covers the TZR125, produced between 1987 and 1993. Known for its sporty 2-stroke performance and agile handling, the TZR125 was a popular choice for enthusiasts and riders seeking a lightweight, performance-oriented motorcycle. This model features a liquid-cooled, 2-stroke engine with reed valve induction, a 6-speed transmission, and a wet, multi-disc clutch, embodying the engineering prowess known in the sportbike segment. Its racing-inspired styling and dynamic capabilities made it a standout in its class during its manufacturing era. This comprehensive workshop repair service manual, written in English, is designed for owners, DIY mechanics, and professional technicians. It provides detailed information on all aspects of the TZR125, including routine maintenance, complete engine and transmission rebuilds, fuel system overhauls, electrical system diagnostics, brake and suspension servicing, and chassis maintenance. The manual also includes troubleshooting guides for common issues, technical specifications, torque values, fluid recommendations, and clear, detailed illustrations to ensure accurate and efficient repair and maintenance procedures for all TZR125 variants produced from 1987 to 1993. 🏷️ Basic Information Identification Make: Yamaha Model: TZR125 Model Code: TZR125 Generation Production Years: 1987-1993 Codes Engine Code General: 2RH 👋 Introduction Market Position Target Audience: Enthusiasts, DIY mechanics, professional motorcycle technicians. Competitive Analysis Value Proposition: Provides professional-level repair and maintenance guidance, saving owners time and money compared to dealership service. Key Features Illustrations: Clear and detailed illustrations and diagrams for each procedure. Specifications: Complete technical specifications, including torque values, fluid types, and clearances. Accessibility: Instant download and digital format for immediate access and ease of use. 📋 Manual Details Coverage Areas Covered Years: 1987, 1988, 1989, 1990, 1991, 1992, 1993 Model Variants Covered: All TZR125 variants within the specified production years. Page Count Estimated Page Count: Refer to manual for exact count (typically 200-400 pages for comprehensive workshop manuals). Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, tuning, and troubleshooting. Transmission: Gearbox inspection, repair, and clutch service. Fuel System: Carburetor overhaul, fuel tank and pump maintenance. Cooling System: Radiator, fan, thermostat, and coolant flow diagnostics. Electrical System: Wiring diagrams, ignition system, charging system, lighting, and starter motor. Brakes: Brake caliper overhaul, disc inspection, hydraulic system bleeding, and pad replacement. Suspension: Front fork service, rear shock absorber maintenance, and linkage lubrication. Chassis: Frame inspection, steering head bearing service, and swingarm maintenance. Bodywork: Fairing removal/installation, seat service, and panel alignment. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment, spark plug checks. Troubleshooting: Diagnostic procedures for common starting, running, and electrical issues. Rebuilds: Detailed instructions for engine and transmission rebuilds. Adjustments: Carburetor synchronization, valve clearance adjustments (if applicable for 2-stroke), brake lever adjustments. Installation: Guidance on installing specific components and accessories. Technical Depth Depth: Comprehensive, from basic maintenance to complete engine rebuilds and advanced diagnostics. 📊 Manual Specifications File Format File Type: PDF Searchable: Yes (standard for good quality PDFs) Print Quality Printability: Printable sections or full manual Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, reed valve induction Displacement: 124 cc (approx.) Bore X Stroke: Refer to manual for exact specifications (e.g., 56.5 mm x 47.4 mm). Compression Ratio: Refer to manual for exact specifications. Performance Horsepower Output: Refer to manual for specific year/market output (typically in the 20-30 HP range). Torque Output: Refer to manual for specific year/market torque figures. Fuel System Carburetor Type: Mikuni VM series (specific model varies by year/market, e.g., VM26SS). Fuel Type: Unleaded gasoline Oil Mixing: Pre-mix or Autolube system (check manual for specific model designation). 🔧 Transmission Standard Type: 6-speed constant mesh Clutch Type: Wet, multiple disc Features Gearbox Inspection: Detailed procedures for inspecting gears, shift forks, and drum. 📐 Dimensions Exterior Overall Length: Refer to manual for specific year. Overall Width: Refer to manual for specific year. Overall Height: Refer to manual for specific year. Weights Dry Weight: Refer to manual for specific year (typically around 120-130 kg). Wet Weight: Refer to manual for specific year. 🛡️ Safety Features Ratings Safety Compliance: Designed to meet relevant safety standards for its era. Active Features Braking System: Front disc brake, Rear drum brake (standard configurations, may vary). Suspension Stability: Front telescopic forks and rear Monocross suspension for stability. 💡 Technology Features Infotainment Instrument Cluster: Analog speedometer, tachometer, and indicator lights. Driver Assistance ABS: Not equipped (ABS was not common on this class of motorcycle during this era). Connectivity Usb Charging: Not equipped. 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for recommended intervals (typically every 3,000-5,000 km or annually). Spark Plug Replacement: Refer to manual for recommended intervals (e.g., every 6,000-10,000 km). Chain Lubrication Adjustment: Recommended every 500-1000 km or after riding in wet conditions. Fluid Specifications Engine Oil Type: Refer to manual; typically a high-quality...