My belt sander is rather old. It's model # 505642, serial # 7515. My manual is # 84-3472 and it does not have a page 15, but I found crowning on page 3. Now my problem is that it does not automatically tension itself. I can not figure out how to get it to do that.
This is what should happen: ..."Automatic belt tensioning and tracking -- Just twist the Tensioning Knob until it clicks to release the tension for belt changes. Then, depress the knob release lever and everything snaps back to “normal”, automatically."... Except it doesn't. There is no snap back to "normal".
When I rotate the knob counterclockwise, the release lever does pop out. However, when I push the release lever back in all it does is allow me to manually turn the knob and increase tension. But there is no locking of the tension knob and it is possible to increase the tension to a point where it is so tight that the machine will not start. I can set the tension knob to any amount of tension but there is no way to keep it at that level of tension. There must be some way to adjust it so that the automatic tensioning works, but I have been unable to find out how to do that.
Any help would be appreciated.