How do I unblock an indesit dishwasher pump/impeller?

My LI 640 Indesit dishwasher has decided to stop draining itself....Drainage pipe is clear so it must be the pump I figure...you can remove the filter assembly but not sure how you get to the pump itself?
Adrian Clarke, August 2006


done
take the drain hose off and blow down it real hard, sorts mine out1 remember, BLOW

better to be lucky then good, October 2006
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