How do I connect this saw's motor to 220 volts?
Looking at the first photo, under the label "208-240" the "white line" is the in coming white wire from the power. It shows that it is connected to the white wire from the motor. The "blue insulate" means the blue wire is not being used and should be capped and taped. Although it doesn't designate how the "black" wire from the power is connected I would say that since it is a capacitor run-type motor that the black is wired to the capacitor. If not it would go to the "reset" switch. Look to see how the black wire  is connected presently and keep it as is.