Level of DifficultyEasy
Time to do repair30 - 60 mins
Age of Appliance5 - 10 years
Based on all the other info here, I thought "ah-ha! I need to replace the clutch assembly". So I ordered the part, it came the next day (to Vermont, even!) and started to disassemble the agitator, motor, etc. just as shown in the video. I don't think I would have attempted it if it had not been for the video. It made the process seem very straightforward and easy, as long as you are comfortable using a socket set.
That said, there were some fairly minor differences between my machine and the one in the video, so your repair might differ a little. First of all, I did not need one of those spanners / tub wrenches (whatever they called it in the video-- the thing he hit with the sledge hammer) to take off that nut under the agitator. I didn't need to remove it, and the drive axle just pulled right out. Second, you really don't need to remove the motor mount. Just take the motor off, and then go right to removing the three bolts on the transmission.
Actually, my problem turned out to be NOT the clutch assembly, but the little plastic gear things that go between the motor and the transmission, fitting into that rubber ring thing. I lifted the motor off and one of them was sitting there in pieces! You can easily order this part, and it's even easier to install than the clutch assembly. The plastic pieces are reinforced with metal now, which seems like a good idea.
All in all, this was a fun little project, and now I am under the (probably false) impression that I can repair any problem with washing machines!