Product review (5 stars): Tappan washer belt replacement
If your washer seems to be running slower than you remembered or if it occasionally stops agitating or spinning then this belt may be your problem. The rubber will become glazed over and start slipping first. You will notice the washer may also make more noise while it washes. That means the motor is working too hard and the belt may now have cracks in it. Fixing the problem may be as easy as replacing this belt. I have a 1995 Tappan-White-Westinghouse large capacity washer and it took me about 10 minutes to remove the old belt - maybe 5 to replace it and about the same time to remove and replace the front panel. I would unplug the unit first and get a good Phillips head screwdriver. That's all you need to complete this repair job. You don't even need to move the washer.
  First open the washer lid, and if you can manage, pull upward very hard on the top of the washer from inside the clothes opening to undo the two clips that anchor it to the front panel. Support the washer top deck with a bungee cord or pointed stick. Then undo the two screws on the bottom of the front panel and slide it up about a half inch until the whole panel falls forward. Set it off to the side.
  Lying on the floor, reach behind the motor on the left side of the washer, following the belt underneath until you feel the tensioner pulley. Push in as hard as you can on that pulley until you feel the belt come loose. Work the belt downward off the pulley while reaching in with your other hand begin to turn the large drive pulley under the transmission (center-bottom under wash tub) away from you. With your left hand bring the belt forwards towards you until you feel the belt fall off the motor pulley (left-front). Now the belt should just drop off the larger pulley but you'll have to reach through its spokes and help it clear the bottom shaft of that pulley. Remove the old belt and just reverse all those previous steps to replace the new belt.
  Be sure to be pushing in on the tensioner pulley during reinstallation. Lift the belt up on the motor pulley first. Then the larger pulley and finally over the tensioner pulley before you release it. This belt fits many different models so the exact placement may vary some but the steps are basically the same. Once the panel is back in place and the screws are tightened back, drop the top washer panel down sort of like closing a car hood and push it down firmly until the two clips relock the lid in place. You may have to shift the top a bit sideways to line it up but that is not hard to do with one hand.
  Thanks for reading and Good Luck with your repair job.