How do you get yellow stains off lineoleum?

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Removing Yellow Stains from Vinyl and Linoleum Floors
White or light vinyl may turn yellow from soil trapped between layers of wax; in that case remove the wax and recoat clean floor. Too much sunlight can also yellow a white vinyl floor.

The most effective way to remove a wax build-up on linoleum is to use ammonia. This is pretty strong smelling stuff- so have plenty of ventilation- also DO NOT mix ammonia with bleach - it creates a dangerous gas. Mix approximately 1/2 cup of ammonia in a bucket of warm water, and wash as you normally would. This should leave your floors looking like new. =)