| Also known as | 68-249 |
| Diagram | Fig. 11 — CLUTCH AND PRIMARY CHAINCASE · ref 11 |
| Subsystem | primary |
| Listed in parts books | 1969–1972 |
BSA Insert — tensioner screw
The insert that fits into the primary chain tensioner screw, part of the clutch and primary chaincase assembly.
This is the insert that sits at the end of the primary chain tensioner screw, part of the clutch and primary chaincase assembly. It's a small wear part — the piece that actually contacts the tensioner blade or the chain as you adjust primary chain tension, rather than letting the screw thread itself bear directly on it.
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It shows up across the clutch and primary cover figures in the catalog records we have, so it's tied into whatever adjuster mechanism your primary cover uses. The alias 68-249 is just the same part number without the dash formatting used in some catalog listings.
Given how small and simple this piece is, it's the kind of thing worth having on hand when you're doing a primary chaincase or clutch job — a worn or missing insert makes chain adjustment sloppy. If you're not sure which cover/adjuster setup you've got, bring it up when you order and we can confirm before it ships.
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