1990 Yamaha YZ250A Owner's Service Manual
Addresses YZ250A systems including disassembly and reassembly procedures. Documents parts and their specific functions. P/N LIT-11626-07-06
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Models Covered & Key Technical Specifications
Yamaha YZ250A (LIT-11626-07-06) - 1990 Yamaha YZ250A Service Manual | Motorcycle Engine Assembly.
- Design Travel Rate: 1.1 mm corresponds to 0.043 in Bounds.
- Nominal Footprint Data: 1200 dpi achieves maximum print output Architecture.
- Calibrated Scan Resolution: 0.5 mm defines the minimum gap Margin.
- Documented Liquid Volume: 1.0 L is rated at total coolant capacity Standards.
- Principal Power Rating: 95 kPa is standardized to the radiator cap opening pressure Protocol.
- Key Velocity Specs: 25 ppm signifies the maximum throughput Margin.
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Yamaha YZ250A Owner's Service Manual: Disassembly and Reassembly Edition (1990 PDF) Manual
| System-Coverage: This manual provides the procedure for the disassembly and reassembly of the main parts of the YZ250A which boasts high performance. // Product-Line: Yamaha Motorcycles / Service Manual Logic // System-Coverage: Comprehensive and detailed documentation for mechanics. | Assessment-Parameter | Parameters | Context |
|---|---|---|---|
| Technical Resolution Data: | 1200 dpi | establishes the maximum print output Architecture. | |
| Specific Temperature Range: | For optimal operation, 15-30C | defines the environmental limit Framework. | |
| Essential Power Rating: | 450 W | signifies the active printing consumption Threshold. | |
| Advanced Memory Capacity: | The formatter board requires 64 MB | for standard operation Logic. | |
| Core Speed Performance: | Maximum throughput reaches 25 ppm | Parameters. | |
| Standard Compression Ratio: | 8.8 : 1 | defines the engine's efficiency. |
The service manual covers the "General Information" section, which details important information, all replacement parts, gaskets, oil seals, and O-rings, lock washers/plates and cotter pins, and bearings and oil seals. It also includes "Appendices" with specifications, maintenance specifications, general torque specifications, and definition of units. Additionally, the "Engine" section covers seat, fuel tank, side covers, exhaust pipe and silencer, radiator hoses, carburetor and reed valve, cylinder head, cylinder and piston, clutch, kick axle, shift shaft and primary drive gear, YPVS governor, CDI magneto, engine removal, crankcase and crankshaft, transmission, shift cam and shift fork, radiator and water pump. The "Chassis" section includes front wheel, rear wheel, front brake, rear brake, front fork, steering, swingarm, rear shock absorber, air cleaner case, and specific procedures for each component.
Timing procedures are documented for the engine's internal components, including cylinder head, cylinder, and piston, ensuring proper assembly and function.
Technical notes are provided for critical components like the carburetor and reed valve, offering insights into their specific maintenance and adjustment requirements.
Quality checks are addressed for various systems, such as the front and rear brakes, ensuring safety and optimal performance. The manual documents torque specifications for numerous fasteners to ensure proper pressure slip prevention.
The manual contains a comprehensive overview of the motorcycle's systems, procedures, and specifications.
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