I purchased a 75 175F7 the other day.The clutch feels fine with normal free play. With the bike running, once clutch is pulled and bike put in to gear,nothing happens when clutch is let out. You can change gears with the bike idling after jiggling lever and so forth. There are no noises coming from the engine or transmission.I haven´t pulled the cover yet to see if theres an issue with the sprocket,ect. I wanted to wait untill I found a manual for this one.I didin´t know if there was a chance that the clutch wasn´t fully disengaging? The only thing that steers me away from this one, is that it seems to be engaged enough to start the bike.This bike has been sitting since 1980 and has only 800 original miles on it. I don´t know at this time if the bike was parked due to this problem. Any ideas?