🏷️ 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 2-stroke motorcycle oil for autolube or pre-mix. Coolant Type: Ethylene glycol-based coolant (refer to manual for specific mixture ratio). Brake Fluid Type: DOT 3 or DOT 4 (refer to manual for exact specification). Known Issues Common Wear Items: Piston rings, clutch plates, reed valves, fork seals, and electrical connections. Carburetor Performance: Can be sensitive to altitude and temperature; requires proper tuning. 2-Stroke Engine Care: Proper oil/fuel mixture and avoiding prolonged idling are crucial for longevity. 📚 Vehicle History Brand Heritage Manufacturer: Yamaha Motor Corporation, a global leader in motorcycles and musical instruments. Model Evolution Tzr Lineage: Part of Yamaha's TZR series, known for its sporty 2-stroke performance and racing-inspired styling. Production Manufacturing Era: The late 1980s and early 1990s were a peak time for innovative 125cc 2-stroke sportbikes. 🏆 Awards & Recognition Recognitions Performance Reputation: The TZR125 was widely recognized for its agile handling and sporty 2-stroke performance in its class.