Blades on the right (as you enter the woodshop) Jet bandsaw kept breaking.
The arm tensioner did not make the blade nearly tight enough, the knob tensioner “bottomed” out (ie could not be tensioned any more). Hmmmmmmmmm…
Closer inspection revealed that the spring in the upper wheel assembly was not in the right place. Someone took the upper wheel assembly apart and did not put the spring in the correct place.
It’s bit hard to see in the picture but spring in the wrong position:
Spring in the correct position.
HB recognized the problem. disassembled the upper wheel assembly and fixed it, it is now working properly. Thanks HB!