I have an '86 3cx hammermaster and its running 100% except for one thing, the back actor is really slow. The back actor still has loads of power and will lift the machine right up off the ground on idle. There is a small black knob on the ground where your right foot would be whilst digging with the back (and its not the hammer pedal btw
). It looks like it should slide but its stuck solid in 1 position. So I was wondering is this little knob a diverter valve to reduce the oil for the back actor and to increase the flow to a hammer? I use this machine most weekends and its preforming fine other than this but it does get a bit annoying when digging a large hole!!!Thanks, Brian
