Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 48, § 21

Whoever operates in or adjacent to forest or grasslands any equipment or vehicle which burns any spark producing material as fuel, unless the same is provided with a suitable spark arrester approved by the United States Department of Forestry, shall be punished by a fine of not less than $50 nor more than $100 and the cost of suppression if such operation results in a response from a fire department.