It took less than 15 minutes. Removed 5 screws on the back side of the top of the oven. Then took off the burner control knob, and removed the two screws underneath. Pulled out the old regulator and pulled off the wires one by one, attaching each one to the new regulator. Screwed it back in, replaced the back of the stove and when I put the knob back on it did not feel right. Plugged in the stove and realized the regulator was a 180 degrees different than the original. I unplugged the stove opened up the stove and inverted the regulator and put it all back together. Then it worked as planned.