hi I just got the same saw as yours and there is a lever to pull down to release the tension on the blade and when its up in place there is a spring that tightens the blade also there nis a screw in the center of the top wheel that sets where the blade rides . mine needs new tires and i see...
Thanks
with the pdf I was able to find out why the quill dropped out of my old drill press.
is a craftsman but had no model number , but was able to repair it and now works again.
thanks all.