To clean washing machine pipes, unplug the unit from its outlet, turn off the water supply, and remove the back of the unit. Snake the pipes, then clean them out with a solution made from baking soda and vinegar.
After the washing machine is unplugged from the wall and the water supply is disconnected, remove the back of the machine with a screwdriver. Remove the pipes from the pipe connector, and drain any remaining water into a bucket. With a pipe snake, gently remove any large build-up from the pipes. Too much force from the pipe snake will puncture the piping. To make cleaning easy, use a funnel and turkey baster to shoot a solution made from baking soda and vinegar into the pipes. When combined, they make a pressurized carbon dioxide foam that loosens and clears out clogs. If clogs are severe, double the solution, and force it into the pipes with the baster. Hold the pipes upside down to drain them out after each time they are flushed. Do not use Drano or any other drain cleaners for washing machine pipes. The chemicals in these cleaners are too harsh, and their residue lingers and clings to clothes, subsequently causing skin irritation.