Washing machine will not pump water out, there isn't a block because the water drains out if I use the flexible drain pipe to siphon the water out. If I remove the pump from the machine and turn the pump propeller by hand a couple of times then re-fit the same pump it works again. We can get about 10 washes done then the same thing happens again. I have done this fix about 3 times now. Will a new pump fix this or is the problem somewhere else? Any advice would be really appreciated. Thanks.