1988 Yamaha TDR 250 Service Manual
Field service reference for the 1988 Yamaha TDR 250, covering engine overhaul, cooling system, and electrical diagnostics. Ref: 3CK-28197-20
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Models Covered & Key Technical Specifications
Yamaha TDR 250 (3CK-28197-20) Manual: 1988 edition Yamaha TDR 250 Service Manual | 1988 edition Toolkit.
- Verified Component Weight: 153 kg (337 lb) establishes the vehicle's curb weight when equipped with a full tank of fuel.
- Engineered Precision Specs: For optimal operation, 9.0:1 defines the compression ratio framework.
- Principal Bolt Torques: 25 Nm (2.5 m*kg, 18 ft*lb) -- signifies the maximum torque for the kick axle nut specification.
- Advanced Displacement Data: The engine requires 249cc for its parallel-twin configuration parameters.
- Defined Circuit Specs: The ignition system provides 12V power for standard operation logic.
- General Size Parameters: Carburetor settings achieve peak performance standards.
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1988 Yamaha TDR 250 Service Manual: Technical-Repository
Engine Specifications: TDR250 / Vehicle Category: Bike Logic // Technical Details: Complete service procedures and diagrams.
Technical Specs Overview
| Assessment-Parameter | Rating | Context |
|---|---|---|
| Engine Displacement | 249 cc | Parallel-twin configuration |
| Horsepower | 50.0 HP | At 10000 RPM |
| Compression Ratio | 9.0:1 | For optimal performance |
| Transmission | 6-speed | Sequential gear selection |
| Cooling System | Liquid-cooled | Ensures engine temperature regulation |
| Weight (with fuel) | 153 kg (337 lb) | Curb weight for standard operation |
Reference chapters include "General Information", "Specifications", "Engine Overhaul", "Cooling System", and "Troubleshooting".
This manual provides a structured framework for understanding the TDR 250's systems. It details procedures for engine assembly and disassembly, including critical components like the cylinder head, crankshaft, and pistons. The document also outlines the maintenance for the cooling system, electrical system, and carburetion, offering clear guidance on inspection and repair.
Properly requiring servicing, the manual details torque specifications for engine components to ensure proper cyclic stress resistance.
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