Unplug the washing machine from the outlet to avoid an electrical shock.
Create a mixture with 1/2 cup of white vinegar, 3 tablespoons of lime juice and 1/4 cup of table salt. Stir the ingredients until they are well-incorporated.
Dampen a large rag with the white vinegar solution, and use it to spot-clean the rust spots. The mildly abrasive table salt and the acidic lime juice remove the rust stains without causing further damage.
Allow the mixture to remain on the washing machine for two to three hours before wiping it away with a damp cloth.
Pour 1 cup of lemon juice into the machine’s detergent reservoir, and run it on the hottest water setting. The lemon juice flushes out the washing machine system, removing the finer rust particulates.
Wipe out the washing machine with a lint-free cloth.