First remove as much water as possible from the tub. Then tilt the machine back at a 45 degree angle and remove the three 5/16" screws that hold the bottom panel on. Then you can access the pump which is on the right side of the unit. It will have two hoses coming off of it. Unclip the pump from the motor and remove the hoses from the pump to clear it. There is going to be a lot of water that comes out of the machine when you do this. Lay down a lot of towels. Clear the pump and the two hoses. That should take care of it.
Here is a link to a service manual for th e whirlpool Calypso, it should d help you out. this is the same machine you have,