So I was given this saw from my general foreman to be used at work. Everything runs great but the stop switch is broke. It's a "hand me down" from other workers that quit the company. Right now there's a zip tie to keep it from popping out. Only way to turn off the saw is by using the choke. I don't know much about repairing chainsaws, but I'm willing to try just because it's a switch. Can anyone here direct me on how to fix this?

