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General| Year | 1974 |
|---|---|
| Manufacturer | Yamaha |
| Model | DT125A |
| Category | Enduro / Off-road |
| Engine Type | Single cylinder, two-stroke |
| Displacement | 123 cc |
| Compression Ratio | 7.2:1 |
| Transmission | 5-speed |
| Front Suspension | Telescopic fork |
| Front Brake | Drum |
| Rear Brake | Drum |
| Cooling System | Air-cooled |
| Final Drive | Chain |
| Bore x Stroke | 56 mm x 50 mm |
| Rear Suspension | Swingarm with dual shocks |
Details on identifying the motorcycle frame and engine serial numbers.
Comprehensive technical data and measurements for the models covered.
Tables outlining recommended service intervals for various components.
Instructions for dismantling the engine into its constituent parts.
Procedures for inspecting and repairing engine components.
Guidance on reassembling the engine and making necessary adjustments.
Comprehensive guide to carburetor inspection, disassembly, and adjustment.
Procedures for front wheel removal, inspection, and installation.
Wiring diagrams illustrating electrical system connections.
Detailed explanation and testing of the ignition system.
Procedures for testing and maintaining the charging system.
Wiring diagrams specific to the DT125C electrical system.
Detailed explanation and testing of the DT125C ignition system.
Procedures for DT125C dynamo and charging system testing.
A systematic guide to diagnosing and resolving common problems.
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