Turn off power and waterRoll the dishwasher on its side, remove 4 screws from floor plate and remove plate. There is a switch attached to the base plate, leave this connected and move the plate to the side. Slip-jaw pliers are required to release the clamp on the discharge of the water pump. A second panel needs to be removed at the base of the back to allow the hose to be inserted this panel does not need to be fully removed.
Lay machine on its side. Remove four outer screws on the base plate. There are two screws in the middle that hold a float switch leave these attached. Remove base plate use multi grip pliers to remove spring clamp and remove old hose. Insallation is the reverse.
Place unit upside down, remove base rear lower plate. Unscrew pump assembly, remove spring retaining clip, discard old drain hose, fit new drain hose using liquid detergent to correctly seat washer to create watertight fit, replace all removed parts correctly. Ensure all electrical harnesses are dry free from water droplets during reassembly. Use the opportunity to thoroughly clean the unit inside out. Re plumb run a hot cleaning cycle with all hoses exposed to do a final leak check. Good as new