/diy/ - Do It Yourself

For the last year or so, my (((Zoeller))) sump pump float intermittently fails to engage the switch to the pump. Float rises, but it just doesn’t click it on. Sometimes all it takes to get it to engage is by simply taking off the cover to the sump and *click* it goes back to work. Is there any way to service the switch? Or is it too big a pain in the ass? Could it be the float itself? Are they replaceable?