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General| Displacement | 247 cc |
|---|---|
| Compression Ratio | 6.8:1 |
| Power Output | 30 hp @ 7, 500 rpm |
| Front Suspension | Telescopic fork |
| Front Brake | Single disc |
| Rear Brake | Drum |
| Manufacturer | Yamaha |
| Model | RD250A |
| Year | 1974 |
| Category | Motorcycle |
| Frame | Steel |
| Bore x Stroke | 54.0 mm x 54.0 mm |
| Transmission | 6-speed |
| Rear Suspension | Dual shocks |
| Seat Height | 790 mm |
Outlines important safety rules and precautions to follow during motorcycle operation and maintenance.
Explains the operational phases of a typical two-stroke engine cycle.
Details how the two-stroke engine receives lubrication, including the Autolube system.
Addresses common engine malfunctions and provides diagnostic steps and solutions.
Guides on diagnosing and resolving issues related to the fuel system.
Covers carburetor adjustment, disassembly, and common problems.
Explains the procedure for correctly adjusting the carburetor float level.
Details how to adjust the idle mixture and idle speed for optimal engine performance.
Describes how to check and adjust the free-play in the throttle cable.
Outlines the process for synchronizing multiple carburetors for balanced performance.
Step-by-step guide for disassembling the carburetor for cleaning or repair.
Covers the functional aspects and troubleshooting of the ignition system.
Details the maintenance procedures for ignition points.
Explains the operation and troubleshooting of the motorcycle's charging system.
Specific troubleshooting steps for the Hitachi 108-08 and Mitsubishi AZ2010N alternators.
Covers the inspection and adjustment procedures for the voltage regulator.
Details the starter/generator system and its components.
Guides on diagnosing and resolving common starter malfunctions.
Outlines the general procedures for servicing the Autolube system.
Instructions on how to bleed air from the Autolube pump system.
General overview of clutch types, removal, and installation procedures.
Explains the different types of kickstarters and their disassembly.
Details the operation and components of the various gearshift mechanisms.
Provides details on transmission types, gear ratios, and assembly.
Explains the hydraulic brake system components and procedures.
Details on front fork types, disassembly, reassembly, and inspection.
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