If you see a number of muscular, bald men in T-shirts wandering around the Hyatt Regency Capitol Hill next week looking like they're ready to do some major cleaning job, don't get nervous. They're all supposed to look like Mr. Clean, the Procter & Gamble product symbol. Ron Smith Celebrity Look-Alikes is auditioning for a stand-in for Mr. Clean, the cartoon creation, who will get a $30,000 contract to travel the country for the "Keep America Beautiful" campaign . . .

Robert Van Fossan, the owner of Beowolf, a bar that existed for 14 years in the 1100 block of 20th St. NW, had been trying to lease The Class Reunion for nearly a month before financial problems forced it to close Saturday. Beowolf went out of business in November when the building where it was located was torn down. He said yesterday that "The Class" had been for sale and he had put in a bid. He said he still hopes to reopen Beowolf at the Class Reunion's old address . . .

Health and Human Services Secretary Margaret Heckler has been discharged from Columbia Hospital for Women and is recuperating at home after her hysterectomy last week . . .

It looks as though even the Chinese are not safe from Rambo. Sylvester Stallone's superhero in the first Rambo movie "First Blood" has been dubbed in Chinese and will be showed nationwide. It even received a favorable review in the Peking Evening News: "This is a serious film with healthy content, profound social significance and a high degree of artistic material. It is an outstanding work in recent American cinema." With that kind of review, Stallone will probably want to have all his films dubbed in Chinese.