Ultimate Handyman demonstrates how to check a washing machine pump for blockages. First, disconnect the washing machine from the electricity source and remove the pump. The water sucks through the inlet and is pumped out of the outlet. Check to make sure that the pump doesn't have any open circuits by attaching the leads to the multimeter. Remove the screws to look inside the pump. Remove any debris that may be clogging the propellor. Make sure the O-ring around the edge creates the seal and reassemble the pump. Make sure you don't over tighten the screws. Your pump should work better in the washing machine after you've checked it and cleaned it.