The usual weight for a push lawn mower is 30 pounds, and the standard weight for a power lawn mower is 105 pounds, although lawn mower weights vary greatly depending on the type of mower. Riding lawn mowers, which are considerably larger, typically weigh in excess of 300 pounds.
Generally, riding lawn mowers with more powerful engines weigh more. 325 pounds is the usual weight for a riding lawn mower with a 12-horsepower engine. Typically, a riding mower with an 18-horsepower engine weighs 450 pounds, while one with a 22-horsepower engine weighs 525 pounds. Typically, professional lawn mowers include more attachments and extras, which increases the weight of the mower.