Small engine mechanics held about 73,000 jobs in 2004. Motorcycle mechanics held around 19,000 jobs. Motorboat mechanics held approximately 23,000 and outdoor power equipment and other small engine mechanics about 31,000. Almost half worked for other motor vehicle dealers, an industry that includes retail dealers of motorcycles, boats, and miscellaneous vehicles; or for retail hardware, lawn, and garden stores. Most of the remainder were employed by independent repair shops, marinas and boatyards, equipment rental companies, wholesale distributors, and landscaping services. About 20 percent were self-employed, compared to about 7 percent of workers in all installation, maintenance, and repair occupations.