LONDON -- Harley-Davidson Inc. said Friday that its fourth-quarter net profit fell 58% to $77.8 million, or 34 cents a share, from $186.1 million, or 78 cents a share, a year earlier as it also announced plans to restructure and reduce shipments in 2009. The group said revenue for the final quarter of 2008 fell 6.8% to $1.29 billion and worldwide retail sales of its motorcycles fell 13.1% from a year earlier as U.S. demand slumped. In the first quarter of 2009, the company expects to ship between 74,000 and 78,000 new motorcycles, representing a 3.5% to 8.5% increase on a year earlier. But for 2009 as a whole it expects to ship between 264,000 and 273,000 units -- a decline of 10% to 13%. Margin will be between 30.5% and 31.5%, compared to 34.5% in 2008, but the firm said it won't give earnings guidance because of the volatile economic environment.