Kitchen-aid stand mixer model ksm90ww has oil that leaks from around the silver piece that is located above where the attachments are mounted. What should I do ? thanks, Lamar

You will need the gearcase gease and gasket replaced.

Pry the chrome drip ring off. You will find it is filled with oil. Clean it thoroughly, then tighten the screws which were uncovered when you removed the chrome "drip ring". It should stop leaking. If it leaks a little bit then the drip ring will catch the oil so it doesn't get into your dough or whatever you are mixing. It should last a few more years then you will probably have to repeat the procedure. They call it a drip ring for a reason, I guess kitchenaid knows they will leak sometime in the life of the machine so they put it on the mixer!!

Bob

Bob is correct with a lot of what he says ...but...the silver thing is actually called the vanity ring and it has two purposes. The first is to cover the 5 screws that hold the motor and gear box connected to the base. He is absolutely correct in advising to re-tighten the five screws that will be exposed when you remove the vanity ring. the reason is that any gasket will compress after time passes. The case is the same here. By tightening the screws you will bring the two frame parts together again and create a tighter seal again. He is also correct that you will get another couple of years use from the mixer before you see oil drips again...if ...you only use your mixer sporadically, if you are a heavy duty user them you need to repack the gear case / motor enclosure with a new food grade grease and a NEW gasket. Both are inexpensive and the re-pack will extend the life of your mixer indefinitely. I have recently serviced a 1956 machine and the only thing it needed was a gasket and new grease. The second reason that the ring is there is as Bob stated to catch grease drips, as the grease ages it separates, liquids from solids, the liquid vegetable based oil begins to run out because the gasket is now compressed, so...do as Bob suggests and remove the Vanity Ring with a very light touch, a screwdriver and a nonmetal hammer. DO NOT hit the top edge of the silver ring hard as it is only attached by pressure. and if you hit it hard it will go wacky by getting out of round and will not stay up anymore. So remember very light taps on the edge. When replacing you can give it a good rap with a non metallic hammer as long as you are hitting the ring straight down (Turn the Mixer upside down to do this, on a towel or you will scratch the finish) If you hit the silver ring sideways you can knock it out of whack also and it will not stay up. The whole process takes about 10 minutes to re-tighten the screws and about 2 hours to clean and re-pack. Oh!! it will also take about 2 rolls of paper towels to repack. Hope this helped, Bob above actually answered the question perfectly, I just added some clarifications.