An SU carburettor- Stub for pipe fromcrankcase ventilator Liftingpin Fuel-intakepipe Locking nut Throttle-to-jetchoke linkage Petrol feed to jet Jet adjuster nut Piston Dashpot screw-in top

The SU carburettor is to be found on many British-built cars. It needs a periodic check to see if it is in tune.

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Adjusting an SU carburettor

Unlike other types of carburettor, which have fixed jets, the SU has only one jet, so the mixtur...