
Tension spring / worm spring for starting and driving clutch (Sachs spare part number 0284 002 000) on mopeds, mopeds and small motorcycles with Sachs 502/1 A, 502/1 B, 502/1 AX, 502/1 AX, 502/1 A CH, 502/1 A DK, 502/1 A NL, 502/1 A S and 502/1 A SF engine (colloquially often called torpedo or rocket engine).
You can find the matching spring band, which is placed under the worm spring to protect the belts, in the accessories section.
| Spring design | Tension spring |
| Ø outside | 4.1 mm |
| Ø wire | 0.9 mm |
| Manufacturer | GPO |
| Material | Spring steel |
| Total length | 208 mm |
| Sachs | 502 1A / 1B (torpedo) |
| Hercules | |
| KTM |
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