Product review (4 stars): Whirlpool washer fails to drain completely
If your top-loading high-efficiency Whirlpool washer has issues with long cycle times, failure to drain all the way, or the machine doesn't seem to go into high-spin, this may be a likely suspect.  Listen for clicking noises when the washer should be switching between agitate and spin modes.  If your shifter (actuator) has a broken tooth on a gear inside the small gearmotor like ours did, it can't make the complete shift.  If you are mechanically-inclined (or just a curious DIY'er), I found that I could disassemble the gearmotor and was able to set the broken gear 180 degrees away from the functional portion of the gear, and get the washer going in pretty short order so weekend washing could continue.  I went ahead and ordered the replacement to have on hand - it was needed when the old shifter failed again in a couple of months. The only reason I did not give 5 stars is, as is the case with most replacement / repair parts, I felt the price was a little too much.