Most aftermarket Datsun service manuals it seems, only show a generic “SU Type” carburettor, which for those in Europe in particular, is not much use. Most late model Datsuns equipped with twin Hitachi made SU type carburettors have a different system for adjusting both idle speed and fuel mixture, with the usual individual adjustments on the carburettor jets disabled. Also this system employs an “anti-dieseling” solenoid amongst other features. Below I have reproduced the relative technical information relating to this type of carburettor (model HJL38W) and the particular features they have. This document is in PDF format for which you will need Adobe Acrobat reader if you don’t already have it.Click on the image below to open the PDF in a new window or right click to save it…

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