Hmm is there any clutch pull on the lever? If not adjust it till its got just enough slack in the lever to stick a quarter inbetwean the lever and the perch
If its gotclutch pull try cranking it and puting it in gear hold the breaks and the clutch and hammer it and see if it breaks free if it don't I betch the guy before u left a wave spring out of it and that will cause it to not disenage and stick if ur not sure bout what I'm tlking bout luck it up at
www.cheapcycleparts.com and looks up that year model and look at the clutch pack and there should what looks like a washer the sipze of a clutch plate but its a spring