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Rob's WD16H and Big4 Forum

Dutch army, Johan Herman Fuhler, somewhere between 1945 and 1950

Rob's WD16H and Big4 Forum
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Jet size

Hi can any one tell me the main jet size and the cut away size on the slide on a Amal 276. Thanks

Re: Jet size

Hello Anrew,

Main jet size 1065 was "standard" but not marked on military parts (see also mysterious parts page). Main jet 170 was originally applied according to specification of 1937.
Slide should have 6/4 cut away and needle position 3 (counted from top). As from 3/11/1941, needle position changed to 2. Possibly to cater for the lesser pool petrol quality.

These are the original AMAL factory settings for WD16H.
Due to wear, age and modern petrol, things might need some tweeking for the best performance.