| Diagram | Fig. 30 — CARBURETTER, T90, T100S AND T100C · ref 16 |
| Subsystem | fuel |
| Listed in parts books | 1969–1970 |
Air valve guide sleeve (622/134)
Air valve guide sleeve for Amal carburetors, part 99-1051, fitted in the T90 and T100 series carb bodies.
This is the air valve guide sleeve, catalog number 99-1051, a small brass-type fitting inside the Amal carburetor body that guides the air/lifting valve as it moves up and down. It shows up in the carburetor figures for the T90, T100S, T100C, T100T, and T100R, so it's an Amal carb internal part rather than something specific to the rest of the bike.
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The sleeve keeps the valve tracking straight in its bore so the slide and needle work smoothly without binding. It's a wear item inside the carb body - if the bore or the valve itself has slop, this sleeve is one of the first places to check.
Our catalog record ties this one to the T90/T100S/T100C/T100T/T100R carburetor figures from the 1969-1970 period, but we'd still confirm against your actual carb before ordering, since Amal internals vary by carb type and body casting.
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