| Diagram | Fig. 5 — CARBURETTOR — AMAL CONCENTRIC — SERIES 1900 · ref 9 |
| Subsystem | fuel |
| Listed in parts books | 1979–1980, 1983, 1985 |
5/077 Throttle cable adjuster locknut
Locknut for the throttle cable adjuster on an Amal Concentric carburetor, also carried under factory number 5/077.
This is a locknut for the throttle cable adjuster on an Amal Concentric carburetor. It's the small nut that locks the adjuster screw in place once the cable slack has been set correctly, so the throttle doesn't creep out of adjustment as you ride.
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Our catalog record ties this part number to Amal Concentric carburetor figures, including the T140E and T140D MkII Concentric setups, across catalog appearances running from 1979 into 1985. The factory number for this part is 5/077, and our records show it as the same identity carried under that number.
It's a simple, easy-to-overlook item, but a stripped or missing locknut here will let the throttle adjuster wander on its own, so it's worth checking if your idle or throttle response feels inconsistent. Call the shop if you're not sure which carburetor setup you're working with — we can help confirm before you order.
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