Dripping Zenith 26va

[Bob Culver]

Springs do vary. Makes with crankcase vacuum had heavie. 2.5 psi was a typical max, with. 1.9 psi recommended. This corresonds a column of petrol 5ft 6 if you have some tube and hours to waste. Check on crank handle not priming lever. The spacing from crankcase determines stroke and max spring compression and max presure and can be packed out. Must preserve reasonable output operated from engine or crank handle.. Variants fit and may not have ideal Seven arm. Contact should be inear middle of pad. Beware fitted correct side of camshaft. A bypassed pump would overwork itself. Decades ago very cheap vacuum guages were popular and many included a low pressure range for pumps.
Frequent reference in Forum to U and t type but how do owners recognise?