Someone told me to rplace the float switch, how can i do that?

1. Turn off power to the dishwasher by unplugging it or turning off the circuit breaker.
2. Remove the service panel that runs along the bottom front edge of the dishwasher. If it is screwed to the dishwasher, remove the screws with a screwdriver. If the panel hangs on hooks, pull the panel out and swing it up to get it off the hooks.
3. Locate the float switch. Wrap each wire with masking tape and label each so you can reinstall them correctly on the new switch. Then remove the wires with needle-nose pliers.
4. Remove the old switch, using a screwdriver or a nut driver and socket to loosen the fasteners.
5. Take the switch to an appliance store and purchase an exact replacement.
6. Install the new switch and attach the wires.
7. Replace the service panel, turn on the power and test the machine.