R R roydon 13 Dec 2011 yellowish dead centre is the alternate valve.To remove you'll need grips (to open up the spring clips by squeezing them together).\none small phillips screw driver ( to remove the one small screw securing it to the machine).
yellowish dead centre is the alternate valve.To remove you'll need grips (to open up the spring clips by squeezing them together).\none small phillips screw driver ( to remove the one small screw securing it to the machine).
