[G.A.S.]

Yes, there should be a jam nut that can be loosened and that tension taken out.
One full inch of movement tells me that eather the jam nut came loose and it backed out of adjustment (wishfull thinking) or you will be able to adjust this end play out , and after that if you have any more issues with this clutch it will need replacement.
Most people I watch that drive a clutched vehical ride there foot on the clutch peddel causing permature wear.
Not that this is your case but if someone else is driving this let them know about those bad habbits.