You have to DIY the filter / bag at the bottom as its clearly way too big, stupidly I didn't get any pics when we did mine as it took pretty much all day to do it & I was due to be down at Sandys in Cornwall @ 9am to tweak the map the following morning
The hose on the top is the simple part, just pull it off (takes a while and make sure you don't break it), then secure it onto the new pump. Also the new pump isn't secured down with the standard clips because of the pick up at the bottom being too 'proud' so you have to come up with a solution to hold the pump down as well
This is the only picture I took doing mine;
