Why this matters
Keep this String Trimmer Safety talk tied to the job in front of the crew. Cover flying debris, rotating line and bystander exposure, then confirm the setup and who is responsible for the key controls. Most tool injuries happen at the point where the tool meets the material: hands are too close, the workpiece moves, the guard is defeated, the accessory is wrong or stored energy is released during a jam or adjustment. Set the work up so control does not depend on reflexes.
A scenario to discuss
A jam, accessory change, adjustment, or cleanup is needed during String Trimmer Safety. The operator believes releasing the trigger is enough because the job will take only a few seconds. What energy-isolation step is required first?
Before work starts
- Inspect the exact tool, guard, trigger, blade/bit/accessory, cord/hose and handle before use.
- Secure/support the workpiece and clear the cutting, kickback, firing and pinch path.
- Set up power/air isolation so jams and adjustments can be handled without exposure.
- Use the tool and accessory that match the material, speed and task instead of forcing an improvised setup.
- Secure the work and keep hands, clothing and coworkers out of the cutting, crushing or discharge path.
Common failure points
- Using a tool with a defeated guard, wrong accessory or damaged safety feature because it still runs.
- Holding the work by hand where a clamp/support would keep hands out of the hazard path.
- Clearing a jam or changing an accessory before energy is isolated.
Safe work sequence / controls
- Inspect the tool, guard, cord/air hose, trigger and accessory before use; remove damaged equipment from service.
- Use the tool and accessory that match the material, speed and task instead of forcing an improvised setup.
- Secure the work and keep hands, clothing and coworkers out of the cutting, crushing or discharge path.
- Disconnect or isolate energy before changing accessories, clearing jams or making adjustments.
- When the planned control for flying debris, rotating line and bystander exposure is not in place or stops working, stop the task and correct it before the crew continues.
Stop and reset the plan if...
- A guard, handle, trigger, blade/bit/accessory, cord, hose or safety device is damaged, missing or modified.
- The workpiece cannot be secured or the operator cannot keep hands/body out of the cutting, firing, kickback or pinch path.
- A jam, adjustment or maintenance task would require reaching into the hazard without isolating energy.
Questions worth asking the crew
- What guard, trigger, handle, blade/bit, accessory, or other safety feature must be in place on the exact tool we are using today?
- How is the workpiece supported or secured so the tool cannot pull, kick, bind, fire, or move it into the operator?
- Where are hands and the rest of the body relative to the cutting, firing, kickback, crush, or discharge path?
- What is the energy-isolation step before clearing a jam, changing an accessory, cleaning, or making an adjustment?
- Has anyone seen this type of tool bind, kick, jam, misfire or fail unexpectedly? What was the first warning and what would we do here?
Make it real on the job
Hold the tool (de-energized) and identify the guard, hazard path, workpiece support and isolation point.
Close the talk
Before the crew starts, everyone should be able to explain the hazard, point to the control being used today, and name the condition that would make the work stop.
Related authoritative reference
29 CFR 1926.300 - General Tool Safety and Guarding · Open reference ↗
This is a practical discussion guide, not a substitute for required training, a competent person, permits, manufacturer instructions, employer procedures, or applicable federal/state/local requirements. Adapt it to the actual task and conditions.
