Thanks for your help. From memory the tank is back left a pipe goes from that to the pump and a few come off it and go in various places. I have to have the machine on its head to do the work and it’s fiddly as I just pull the bottom up enough for me to get in and mess around.. yeah I changed just the pump but took the housing off and there was no visible blockages in there. I’ll stick a pipe cleaner down the places I can and see if that helps. A diagram would be brilliant but if you can’t do it no problem. Would a similar model not be the same?