An attempted buyout of Black & Decker Corp.'s small appliance manufacturing plant in Brockport, N.Y., by management has failed and a complete shutdown of production will occur by September, plant officials said yesterday.

Layoffs of the plant's 600 workers are expected to begin in May, officials said.

"There's no longer a crack of light in the door and we are moving full-speed ahead in terms of a closure," said James Duffy, spokesman for the Black & Decker plant, located about 20 miles west of Rochester.

General Electric Co. sold the 34-year-old, 200,000-square-foot small appliance manufacturing building to Black & Decker in April 1984 for $300 million. Black & Decker, based in Towson, Md., kept most of the 700-member GE work force and used the plant to make can openers, food processors, electric knives and other appliances.

This past November, Black & Decker announced a company-wide restructuring because of "excess manufacturing capacity worldwide." The Brockport plant, which supplies the firm's household products division, was the first to be closed.

The men who negotiated to buy the facility -- plant manager Louis Reali and controller John Oncken -- have now abandoned hope that a buyout can save the plant and the 600 remaining jobs, Duffy said.