🏷️ Basic Information Identification Make: Yamaha Model: TZR 125 Generation: 1st Generation (2RH) Production Years: 1987-1993 Codes Engine Codes: 2RH 👋 Introduction Market Position Target Audience: Do-it-yourself enthusiasts and experienced mechanics Value Proposition: Inexpensive way to keep the vehicle working properly; comprehensive repair and service information Competitive Analysis Manual Quality: High-quality, detailed, and authoritative Key Features Instruction Style: Numbered instructions, detailed substeps, cautions and warnings Visual Aid Quality: Detailed illustrations, drawings, and photos Navigation: Numbered table of contents for quick access 📋 Manual Details Coverage Areas Covered Years: 1987, 1988, 1989, 1990, 1991, 1992, 1993 Model Variants: TZR 125 (all variants within the specified years) Page Count Estimated Page Count: Extensive (Specific count not provided, but implied to be comprehensive for all systems) Manual Type Type: Workshop Service Repair Manual (Factory Service Repair Manual) Language Language: English Format Digital Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Yes (Comprehensive Engine Electrical: Yes (Includes diagnostics and wiring diagrams Emission Control: Yes Fuel System: Yes (Carburetor, fuel lines, etc.) Suspension: Yes (Front forks, rear shock, adjustments) Clutch: Yes (Operation, maintenance, repair) Transmission: Yes (Manual Transaxle System) Driveshaft Axle: Yes Steering: Yes Brakes: Yes (Front and rear systems) Body Interior Exterior: Yes (Bodywork, panels, fairings, interior components) Body Electrical: Yes (Lighting, switches, accessories) Restraint System: Yes (Seat belts, if applicable, or related safety components) Procedures Included Maintenance: Yes (Routine checks, adjustments, fluid changes) Troubleshooting: Yes (Integrated with electrical service procedures) Repair: Yes (Step-by-step instructions for component repair and replacement) Diagnostics: Yes (Especially for electrical systems) Disassembly Reassembly: Yes (Implied by step-by-step instructions and detailed illustrations) Technical Depth Depth: Comprehensive (Suitable for both DIY and experienced mechanics) Documentation Type: Detailed illustrations, diagrams, wiring schematics, specifications 📊 Manual Specifications File Format Format: PDF Viewing Requirements: Adobe PDF Reader Print Quality Printability: Fully Printable (Individual pages) Zoom Capability: Yes (Zoom In/OUT) Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) Delivery Delivery Method: Instant Download Requirements Unzipping Software: WinZip (or equivalent) Compatibility Operating Systems: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, liquid-cooled, single-cylinder Displacement: 124.7 cc Bore X Stroke: 56.4 mm x 50.0 mm Compression Ratio: 7.0:1 (approximate, may vary by market) Power Output: Approx. 25-30 hp @ 8,500 rpm (Varies by market and specific model year) Torque: Approx. 2.2 kgf-m @ 8,000 rpm (Varies by market) Fuel System Carburetor Type: Mikuni VM28SS (or similar) Fuel Delivery: Carburetor with reed valve induction Fuel Type: Unleaded gasoline Oil Mixing: Autolube (Premix or separate oil injection system) 🔧 Transmission Standard Type: 6-speed constant mesh, sequential Clutch Type: Wet, multi-plate Features Gear Ratios: Detailed ratios available within the manual Final Drive: Chain drive 📐 Dimensions Exterior Length: Approx. 1,990 mm (78.3 in) Width: Approx. 710 mm (28.0 in) Height: Approx. 1,140 mm (44.9 in) Wheelbase: Approx. 1,340 mm (52.8 in) Weights Dry Weight: Approx. 126 kg (278 lbs) Wet Weight: Approx. 138 kg (304 lbs) 🛡️ Safety Features Ratings Safety Standards: Compliant with contemporary motorcycle safety regulations of the era Active Features Brakes Front: Disc brake (Hydraulically actuated) Brakes Rear: Drum brake (Mechanically actuated) Passive Features Lighting: Halogen headlight, taillight, turn signals 💡 Technology Features Infotainment Infotainment System: N/A (Vehicle is from an era without modern infotainment systems) Driver Assistance Driver Assistance Features: N/A (Vehicle is from an era without modern driver assistance systems) Connectivity Connectivity Options: N/A (Vehicle is from an era without modern connectivity) 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific mileage/time intervals Spark Plug Replacement: Refer to manual for specific mileage/time intervals Chain Lubrication Adjustment: Regularly (Refer to manual) Fluid Specifications Engine Oil Type: 2-stroke pre-mix oil (Specific API/JASO classification in manual) Coolant Type: Ethylene glycol-based antifreeze (Refer to manual for mixture ratio) Brake Fluid Type: DOT 3 or DOT 4 (Refer to manual) Transmission Oil Type: Yamalube Gear Oil (or equivalent) - Specific viscosity in manual Known Issues Carburetor Cleaning: Common due to age and potential fuel gumming Power Valve Maintenance: Can seize or become carboned up if not serviced regularly Electrical Connections: Corrosion or loose connections can cause intermittent faults 📚 Vehicle History Brand Heritage Manufacturer: Yamaha Motor Company Motorcycle Segment: Sportbike / Performance Model Evolution Tzr Series Introduction: The TZR line built on Yamaha's racing heritage, featuring advanced two-stroke technology and sporty design. Production Manufacturing Location: Japan (Primary) 🏆 Awards & Recognition Recognitions Awards And Recognition: None specifically documented as awards, but recognized for its performance in its class during its production era.