Disconnection of the washing machine is usually left to the homeowner as it may cause a flood situation. Before the job is started, the (hot if fitted) and cold water supplies need to be isolated. Then, the machine should be unplugged as it normally plugged into a nearby outlet.Now, pull the washing machine clear and expose the back, so you can now see where the taps are connected. They are usually chrome isolation valves with a ¾ inch thread on one side that attaches to the machines hose. Turn them off by moving both fitted levers 90° to the pipe. Have a container handy to collect any excess water underneath the valve as you undo it by hand. Pliers may be required. Check that the isolation valves are not leaking. An Abbey Wood Plumbers can fit a new washing machine. If all is dry turn your water supply back on and check again. If they do leak, then follow these steps:1). Isolate the water off once again and drain the water in the system at the kitchen sink. Open up the leaking valve and drain the remaining water away.2). Undo the nut that secures the isolator. It sits behind. 3). You can easily fit a new valve and use the old back nut and olive, if the olive looks worn use PTFE tape or even cut the pipe back using a pipe slice and fitting a new nut and olive on the pipework.4). A stand-pipe takes the hose carrying the emptying waste from the machine in which case just pull it out and lower it to the drain the excess water into a bowl. A Thamesmead Plumber is a skilled plumbing professional and can re-fit isolating valves.New washing machines are now cold water fed only, so you will only deal with one isolator.