| Diagram | Fig. 5 — GEAR CLUSTER · ref 33 |
| Listed in parts books | 1969–1970 |
BSA Pinion, kickstart ratchet
Kickstart ratchet pinion for the gearbox, the toothed piece the kickstart pawl engages to spin the engine over.
This is the kickstart ratchet pinion, part number 40-3271, a gearbox internal that lives down in the gear cluster area where the kickstart mechanism engages the mainshaft. It's the toothed piece that the kickstart quadrant and ratchet pawl bite into when you swing the lever down to fire the engine over, then it disengages once the motor is running so it doesn't spin with the rest of the cluster.
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This one shows up in the parts books under the gear cluster and footstart/footchange figures, which tells you it's a wear item that ties directly into how the kickstart mechanism feels and functions. Rounded teeth here are usually behind a kickstart that slips or won't catch cleanly.
The catalog record ties this to gearbox internals appearing across catalog entries from 1969 to 1970, but it doesn't pin down an exact model. Give the shop a call to confirm fitment against your gearbox before ordering.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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