Unplug your Sears Craftsman band saw from its electrical outlet.
Locate the locks on the housing doors. Press in on the locks and rotate the locks 1/4-turn counterclockwise to unlock them. Open the doors to expose the upper and lower wheels.
Manually rotate the left wheel counterclockwise. As you turn the wheel, place a drop of all-purpose lubricating oil directly onto the blade on the side that will ride against the wheel. Apply five or six drops of oil in total as you turn the wheel.
Rotate the wheel counterclockwise five to 10 times to lubricate both wheels. The oil placed on the blade will travel over the upper wheel and get to the lower wheel.
Close the doors on the band saw, then lock them by pressing the locks in and turning them 1/4-turn clockwise.
Plug the band saw back in.