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Shop/Category/Fig. 13 — INNER AND OUTER CHAINCASE/Washer – clutch cable abutment locknut
Washer – clutch cable abutment locknut
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DiagramFig. 13 — INNER AND OUTER CHAINCASE · ref 39
Subsystemprimary
Listed in parts books1973–1974

Washer – clutch cable abutment locknut

Washer for the clutch cable abutment locknut on the outer primary chaincase cover.

PN · 57-3990

This is a washer that sits at the clutch cable abutment on the outer primary/chaincase cover, where the cable adjuster and its locknut come through to set clutch lever free play. It's a small part but it does real work - it gives the locknut a proper seat to bear against so the adjustment holds once you've got the clutch cable tensioned the way you want it.

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It shows up in the parts books under the chaincase and clutch control figures, alongside the chain tensioner and outer primary cover hardware. If you're chasing a clutch cable that won't hold its adjustment, or the abutment point looks chewed up or missing its washer, this is worth checking.

Catalog appearances put this in the 1973-1974 window, so treat that as what our records show rather than a firm cutoff - confirm against your own bike before ordering if you're unsure.

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