| Diagram | Fig. 10 — OUTER TIMING COVER, KICKSTART AND FOOTCHANGE · ref 32 |
| Subsystem | engine bottom |
| Listed in parts books | 1970–1972 |
BSA Shaft — clutch lift mechanism
Clutch lift shaft from the outer timing cover, kickstart, and footchange assembly, part number 57-4038.
This is the clutch lift shaft, the part that carries the clutch release motion from the outer timing cover area through to the actuating mechanism. It shows up in the parts-book figures covering the outer timing cover, kickstart, and footchange assembly, so that's where it lives on the engine.
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When you pull the clutch lever, this shaft is part of the linkage that transmits that pull through to the pushrod that disengages the clutch plates. It's a simple mechanical part but if it's worn, bent, or seized in its bore you'll notice it right away as poor clutch action or a lever that doesn't feel right.
Our catalog record for this one spans 1970 to 1972 across three appearances. It's listed under a BSA-style part number, but confirm fitment against your specific engine before ordering since the record doesn't spell out an exact model.
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