Hello. The side spray base is held in place with a washer and a nut on the underside of the sink. Sometimes this nut gets a bit corroded and can be difficult to remove. Here is what you will need to do. Borrow or purchase a faucet wrench. These are available at all hardware stores, home depot, lowes. Also get a can of a lubricating spray called WD 40. This is sometimes a two person job so call a friend. One person under the sink and one above, use the faucet wrench to grab ahold of the nut surrounding the hose. As you are looking up at it it will come off by turning it counter clockwise. If it doesn't come right off spray it with WD-40 and leave it for 30 minutes while the penetrating oil does it's magic.
You will also have to unscrew the sprayer and pull off the little metal keeper that will keep the hose from sliding through the opening.
Once these things are done you will have removed the old base and you will be ready to replace it by reversing the steps. Regards, Joe
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