Dryer Timer 101

Been pretty busy today. Larry came and got the Kenmore dryer. He dropped off another Whirlpool dryer. One in which he could not get to heat. He replaced the limits and the heater was fine. So he brung it to me. Here is what I found:

If you know all of the components are good and you still have no heat AND you have verified 240 to the machine you want to check the timer. To do so you remove the fat red wire from the heating element and you place a lead of your meter there. Then you check for continuity between that point and all other terminals. Turning the knob 360 degrees for each check. If you get no readings then you can be certain the contact inside the timer is fried.