| Diagram | Fig. 28 — CONTROL CABLES · ref 34 |
| Subsystem | controls |
| Listed in parts books | 1967–1971, 1974 |
Throttle stop screw
The Amal carburetor throttle stop screw that sets idle speed by limiting slide closure.
This is the throttle stop screw for an Amal carburetor, part number 210/008. It's the small adjuster that sets the idle by controlling how far the throttle slide can close, giving you a baseline opening so the engine doesn't stall at a stop light.
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It shows up across a run of carburetor and handlebar control figures in the catalog, spanning petrol tank and handlebar/control assemblies as well as control cable listings, which tells you it's a small but frequently-referenced piece in the control setup rather than something buried deep in the carb body.
If you're chasing an idle that won't hold steady or a slide that doesn't seat right at closed throttle, this screw is one of the first things to check. It's simple hardware, but worth having on hand since it's easy to lose track of during a carb rebuild.
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