http://shop.electrolux.co.uk/node536.aspx?section=P0914A6159&matrix=A&elc=00&prodDate=19950901P&prodNo=914634051&model=WDT1085&prod_no=914634051&model_type=
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click on explosion view
look at item 145.filter manifold.on the back you will see a round cylinder with a piece stuck out the top.That gets blocked causing a no spin sometimes
Also single heavy items will not spin.check motor brushes.10mm of carbon or less need replacing
ck
February 2012