Lance Fluegel and Bradley Rein
University of Arizona Cooperative Extension

• Read the owner's manual carefully.
• Wear proper protective clothing: eye protection, trim-fitting pants and shirt, sturdy shoes, and ear protection if using a gas-powered trimmer.
• Check the machine for loose, broken, or damaged parts -- repair or replace as needed.
• Be sure electric units are either double insulated or connected to a 3-prong grounded outlet.
• Use a properly sized outdoor type extension cord for electric units. A 2-wire cord for double insulated units and a 3-wire cord for units that need to be grounded. Use of a ground fault interrupter (GFI) circuit provides added safety.
• Do not use electrical powered units in damp or wet conditions.
• Be sure the working area is free of hazards, which could hamper the use of the trimmer.
• Trimmers can throw objects with force so keep children, bystanders, and pets from the working area.

• Do not operate the trimmer near windows.
• Keep the trimmer close but not touching the ground. Angle the unit slightly to the left to discharge trimmings away from your body.
• Hold the trimmer firmly with both hands in a properly balanced stance.
• Keep the hot engine and exhaust away from your body.
• Use only monofilament string recommended by the manufacturer. Never use wire or metal reinforced string as broken pieces can become lethal missiles.
• Do not use the trimmer for any purpose other than manufacturer's recommendations.
• Never touch the string while in operation.
• Do not operate gas powered units indoors to prevent carbon monoxide poisoning.
• Stop the engine and disconnect spark plug wire before servicing. Disconnect the power cord on electric units.
• Refuel only with engine stopped and cool.

• Store the unit in an area where children or untrained personnel will not have access.

Disclaimer and Reproduction Information: Information in NASD does not represent NIOSH policy. Information included in NASD appears by permission of the author and/or copyright holder. More

NASD Review: 04/2002

This document is 8 831-P , a series of the the Cooperative Extension, the University of Arizona, Tucson, AZ 85719. Publication date: May 1989.

Lance Fluegel, Safety Coordinator, and Bradley Rein, Engineering Specialist, the College of Agriculture, the University of Arizona, Tucson AZ 85719.