Hi Neal,
Welcome to our club! I know you were writing Robert, but I thought I'd chime in an say hello. I spent a lot of my childhood in Rochester, just down the road from you.
You must have had decent water pressure where your machines were installed? The reason for the pause in rinse fill is because most if not all belt-drive Kenmores have a one or two minute non-agitate pause in the rinse fill section of each cycle. During this time, even if the pressure switch is satisfied, the machine will not agitate. When the timer advances out of the pause, the first thing it does is activate the wig-wig solenoid circuit, which makes a cool noise. Then the motor comes on, water starts flowing through the pump, and a rush of belt-drive sounds happen in concert. But, I always like hearing the agitate solenoid first.
Most of the time, unless the machine is either set on a low water or there is tremendous water pressure, the machine is still filling beyond this timed pause. If anyone watches a belt-drive closely, you'll see the timer advance one notch during the rinse fill. It then stops advancing at that point as the timer motor is turned off, until the pressure switch is activated. The sound of the incoming water can often mask some of the other initial start up sounds.
Isn't it fun to see your childhood washer here? I hadn't seen mine from 1974 when we got our replacement Kenmore (from the Sears at the Oakland Mall) until 2008 when I joined the site. Enjoy!
Gordon