| Also known as | 68-610 |
| Diagram | Fig. 18 — OIL TANK, TOOLBOX, SILENCERS · ref 18 |
| Subsystem | engine bottom |
| Listed in parts books | 1969–1970, 1973 |
BSA 'O' ring, oil release valve
An 'O' ring that seals the oil release valve in the lubrication system.
This is an 'O' ring that seats around the oil release valve, one of the small sealing parts in the lubrication system. It shows up in the parts books under both the oil tank/toolbox/silencer figure and the oil pump/gearbox sprocket figure, which tells you it's doing its job somewhere in the oil circuit rather than out at the tank cap or filler.
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It's a simple seal, but a perished or flattened 'O' ring in this spot is a common source of a slow oil leak or a pressure release valve that won't hold seat properly. Cheap enough part to replace on principle if you've got the oil tank or pump apart already.
The catalog data ties this to machines cataloged in the 1969-1970 window, but we'd want to confirm exact fitment against your parts book before you order, since the manufacturer tag on this one doesn't line up clean with a single marque.
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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