🏷️ Basic Information Identification Make: Yamaha Model: DT125R Year: 1987, 1988 Codes Engine Code: Likely 1G8 or similar for this generation DT125R (specific code not explicitly stated in product info) Generation Model Generation: Third Generation DT125R (based on model years) 👋 Introduction Market Position Target Audience: Owners of Yamaha DT125R (1987-1988), independent mechanics, enthusiasts seeking to maintain or repair their motorcycle. Competitive Analysis Value Proposition: Provides dealership-level repair information, enabling significant cost savings on maintenance and repairs. Key Features Unique Selling Points: Vehicle-specific, accurate, clear, concise text with diagrams/illustrations, wiring schematics, step-by-step instructions, advanced troubleshooting. Accessibility: Downloadable PDF format for easy access on multiple devices. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Scope: Comprehensive for 1987-1988 Yamaha DT125R models Page Count Estimated Page Count: Varies by specific manual version, but likely extensive due to detail level. Typical service manuals for this era are 200-500+ pages. Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Engine Specifications, Engine Removal and Installation, Fuel System, Intake & Exhaust Drivetrain: Transmission, Drive Chain, Sprockets Chassis: Steering System, Shocks, Body Work Electrical: Electrical System, Wiring Diagram Maintenance: Routine Maintenance, Periodic Checks and Adjustments, Lubrication, Cooling System Procedures Included Basic Maintenance: Oil changes, spark plug replacement, air filter cleaning/replacement, chain adjustment, brake adjustments. Intermediate Repair: Engine tune-ups, carburetor cleaning and adjustment, clutch service, brake system servicing, suspension component replacement. Advanced Repair: Engine disassembly and reassembly, transmission overhaul, electrical system diagnostics and repair, chassis component replacement. Troubleshooting: Advanced Troubleshooting, diagnostics for common and uncommon issues. Technical Depth Depth: Comprehensive, suitable for both amateur mechanics and professional technicians. Diagnostic Tools: Includes information implicitly suggesting use of standard motorcycle diagnostic tools and torque wrenches. 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Yes, individual pages are printable. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Quality: N/A (Digital PDF format) Compatibility Operating Systems: All Versions of Windows AND Mac Requirements Software Requirements: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: 2-stroke, liquid-cooled, reed valve induction (typical for DT125R of this era) Displacement: 123 cc (approximately) Bore X Stroke: Specifics available within the manual, typically around 56.5 mm x 49.8 mm Compression Ratio: Specifics available within the manual, likely around 7.2:1 or higher Performance Horsepower: Typically around 15-20 HP depending on specific market regulations. Exact figures in manual. Torque: Specific figures available within the manual. Fuel System Carburetor Type: Likely a single Mikuni VM series carburetor. Specific model (e.g., VM28) in manual. Fuel Type: Unleaded gasoline (minimum octane rating to be specified in manual). Fuel Mixture: Pre-mix (gasoline and 2-stroke oil) or Oil Injection system (specifics in manual). 🔧 Transmission Standard Transmission Type: 6-speed constant mesh, sequential. Optional Optional Transmission: N/A Features Clutch Type: Wet, multiple disc. Gear Ratios: Detailed gear ratios for each speed are provided in the manual. Transmission Oil Type: Specific Yamaha recommended oil or equivalent Yamalube 2-stroke oil type and capacity detailed in manual. 📐 Dimensions Exterior Overall Length: Specifics available in manual, but typical for a dual-sport of this era. Overall Width: Specifics available in manual. Overall Height: Specifics available in manual. Wheelbase: Specifics available in manual, typically around 1390 mm (54.7 in). Weights Dry Weight: Specifics available in manual, typically around 110-115 kg (242-253 lbs). Wet Weight: Specifics available in manual (includes all fluids). Fuel Capacity: Specifics available in manual, typically around 10 liters (2.6 US gal). 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycle safety ratings are not typically standardized like automotive crash tests). Active Features Braking System: Front disc brake, rear drum brake (typical for this model year). Specifications in manual. Suspension Type: Telescopic front fork, Monocross rear suspension. Adjustment and maintenance procedures in manual. 💡 Technology Features Infotainment Infotainment System: N/A (This is a 1980s dual-sport motorcycle, no advanced infotainment features.) Driver Assistance Driver Assistance Systems: N/A (No electronic driver assistance systems.) Connectivity Connectivity Features: N/A (No electronic connectivity features.) Lighting Headlight Type: Halogen (typical for the era). Bulb specifications in manual. Taillight Type: Incandescent bulb. Bulb specifications in manual. 🔧 Maintenance Service Intervals Oil Change Interval: Specific mileage or time interval provided in the manual. For 2-strokes, focus is on pre-mix or oil injection system checks. Spark Plug Replacement: Intervals and correct spark plug type (e.g., NGK BR9ES) detailed in the manual. Air Filter Cleaning: Recommended cleaning intervals and cleaning agents (e.g., mild soap and water or specialized cleaner) are in the manual. Chain Lubrication Adjustment: Regular intervals recommended, specific slack allowance detailed in manual. Fluid Specifications Engine Oil Type: 2-stroke engine oil meeting specific JASO FD or similar API TC standards. Pre-mix ratio (e.g., 20:1, 32:1) specified. Coolant Type: Ethylene glycol-based, anti-freeze/anti-corrosion coolant. Capacity and type in manual. Brake Fluid Type: DOT 3 or DOT 4 brake fluid...