1981 Yamaha DT50, DT80, DT50MX, DT80MX Service Manual
Wiring diagrams, specifications, and repair sequences for DT50, DT80, DT50MX, DT80MX: engine, transmission, suspension, electrical systems. Part number for this manual is 100245.
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Models Covered & Key Technical Specifications
Factory-Level Diagnostic Field Manual: Bike Yamaha manual (1981) for DT50, DT80, DT50MX, DT80MX models Maintenance-Registry
Yamaha DT50MX/DT80MX (100245) -- 1981 Documentary Reference Handbook | File.
- Reference Gross Dimensions: 2,075 mm establishes the overall length Architecture.
- Integral Optical Resolution: For optimal operation, 82 kg defines the net weight Framework.
- General Moment Values: 49 cm³ -- signifies the cylinder displacement Threshold.
- Certified Fit Tolerances: The gearbox requires 5-speed for standard operation Logic.
- Factory Climate Specs: Maximum throughput reaches 132 mm Parameters.
- Established Shipping Weight: The engine oil capacity is 1.0 qt. Requirements.
Professional Workshop Service Manual & Technical Specifications
Factory-Level Diagnostic Field Manual: Bike Yamaha manual (1981) for DT50, DT80, DT50MX, DT80MX models Maintenance-Registry
Operational-Framework: DT50, DT80, DT50MX, DT80MX / Yamaha Motor Corporation, Ltd. Logic // Component-Focus: Bike / Motorcycle Logic // Operational-Framework: Maintenance and Repair Procedures.
Document Overview Table
| Integrated-Framework | Operational-Logic | Calibration-Spec |
|---|---|---|
| Engine Systems | Complete overhaul procedures | Emission Controls |
| Transmission | Gearbox component diagrams | Drivetrain Maintenance |
| Electrical | Wiring schematics | Ignition System Diagrams |
| Chassis | Frame and suspension details | Braking System Specs |
| Fuel System | Carburetor tuning | Fuel Delivery Diagrams |
Cataloging major assemblies into detailed sections, this manual provides an in-depth look at the Yamaha DT50, DT80, DT50MX, and DT80MX models. Practical information covers a wide array of systems and procedures.
Assembly instructions are detailed for the engine, including piston and cylinder service.
Hydraulic schematics are included for the suspension system.
Steering component information is provided for handlebar and fork assembly.
Inspection guidelines are provided for the braking system and wheels.
Alignment specifications are included for the drive chain and sprockets.
This manual documents torque specifications for critical engine and chassis components to ensure proper corrosion joint prevention.
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