Four men accused of smashing windows and splashing paint on the Chinese chancery in January to protest the forthcoming visit of Chinese Vice Premier Teng Hsiao-ping were found guilty yesterday in federal court of destruction of a foreign government's property.

Judge June Green sentenced three of the men -- James J. Nelson, Curtis J. Mohn and Mark W. Jackson -- to two years probation. The fourth, Jim E Loudermilk, was given a three-month suspended sentence and three years probation. Loudermilk also was found guilty of possession of an unregistered gun.

Green ordered all four men, who are members of the Revolutionary Communist Party, to pay the chancery a total of $815 in restitution.

The men are supporters of the late Chinese Communist Party chairman Mao Tse-tung. Lead fishing weights were thrown through the windows of the chancery at 2300 Connecticut Ave. NW and paint was splashed across the front of the building several days before the visit of the Chinese vice premier.

In June, Judge Green accepted the defendants' guilty pleas to the lesser charge of harassing the Chinese chancery, but reversed her decision as a result of objections by U.S. Attorney Earl J. Silbert. Silbert said the men should stand trial on a more serious charge.