I had to order a new glass blender jar and blade assembly when my first one broke. Since they are separate parts, I need to assemble the blade onto the glass jar. I tried to do this once (no instructions received) and when I turned the blender on, the blade did not spin. It just tightened the blade onto the jar and made it difficult to remove. I now have it back in separate parts and don't dare reassemble until I have some instructions. I looked online for manuals and they consider this a "non-removable blade" so they don't give instructions.

Blenders - Waring - PBB 201 / 204 / 209 / 212 Professional Work Top Blender