Best advice... Check out youtube videos...
CONSULT WITH A CERTIFIED ELECTRICIAN.
The switch will power 110/220-volt saws. Is your saw different from that?
Push harder. The On button requires a little force.
The switch I installed on my bandsaw had screw connections.
Yes, the switch will remain in the "on" position when the power comes back on. I wired mine up and tested it as I found that sometimes these were mis-labelled as "magnetic." It is not.
Green is chassis ground , they should both be connected together and screwed to the metal frame of the device you are wiring. If the wires are in a plastic box they can just be connected together. For 115 ( standard house voltage) the white wires can be connected together like they were before. One black (power in) to really any of the four screws and then power out ( to device) to the screw that matches vertically ....one on bottom right one on top right. you can also wire the white wires the same way if you want. One of them top left one of them bottom left. It is a dpdt switch that is double pull double throw. when you activate the switch it connects the top screws to the bottom screws
I would contact you local Home Depot for assistance. I'm not sure how to contact the manufacturer.