R27 Bing Accelerator pumps

Ellamindi · Post by **Ellamindi** » Fri 3. Aug 2007, 14:53

According to Service Bulletin 2/66 (229) R27 carburettors from #384365 had 125 main jets with accelerator pumps fitted "in order to obtain better acceleration". My R27 #385188 has a 120 main jet and doesn't appear to have what I would call an accelerator pump, or what I am used to seeing on Dell Ortos etc. Mark lists the pump and the 125 jet as available in the shop. Does anyone have a photo or drawing of what this thing looks like? The parts manual just shows the needle jet 1408 and the 115 main jet.