Committed to Your Safety: Protective Equipment

Stay safe, confident, and in control — follow STIHL’s essential safety and technique tips for working with your grass trimmer or brushcutter.

Why Safety Equipment Matters

Working with powerful tools is rewarding, but only when done safely. Always wear personal protective equipment (PPE) when using your chainsaw, trimmer, or brushcutter — including a helmet, safety glasses, gloves, cut protection trousers, and boots.

Your product’s instruction manual outlines specific PPE requirements. Before every use, check your tool is in perfect condition. Your local STIHL dealer can help set up your machine and recommend suitable protective clothing that fits comfortably.

Note: Personal protective equipment is essential but does not replace safe working practices.

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How to Put on a Grass Trimmer with Harness Woman wearing safety glasses trimming grass with a STIHL FS 240 and shoulder harness

Before trimming, make sure your harness fits correctly. A properly adjusted harness balances the tool’s weight evenly across your shoulders and back, reducing fatigue and improving control.

Incorrect harness adjustment can make the trimmer unstable and increase strain. Ask your dealer for help fitting it correctly the first time.

Basic Grass Trimming Technique Woman trims tall grass with a STIHL FSA 57 cordless trimmer in a garden

Even for first-time users, trimming grass with a STIHL trimmer is simple and effective. The basic motion is a smooth semicircular sweep from right to left while moving forward slowly. This method ensures that cuttings fall onto the mown area, keeping your workspace tidy.

How to Use a Grass Trimmer in Tall Grass Woman using STIHL FS 240 grass trimmer with face protection beside a lake

For tall grass or dense weeds, use a two-stage technique:

  • First, sweep from left to right at a higher level to cut the tops.
  • Then, sweep back right to left near the ground to finish the cut.

This method reduces strain on the motor and helps distribute clippings evenly.

Working on Large, Level Areas Person mowing a large flat area with a STIHL FS 230 grass trimmer

When tackling large, flat areas, use the quadrant method:

  • Divide the area into smaller sections.
  • Work methodically from the outer edges toward the centre.

This approach improves consistency and ensures no patches are missed.

Using a Grass Trimmer on Hills and Slopes Person cutting grass across a slope using a STIHL FS 240 brushcutter

Always trim across slopes, not down them. Work in horizontal strips from one side to the other. When you reach the end of a strip, move up and cut another strip above it.

This method is safer, reduces slipping hazards, and keeps cuttings contained in the mown area.

Dealing with Obstacles and Borders Close-up of STIHL FS 240 trimming close to a tree base

A string trimmer is ideal for cutting close to trees, fences, and shrubs. To protect bark and surfaces, use the trimmer guard as a guide and keep the line slightly angled.

For trees planted close together, trim a border around each trunk before mowing. Use the same technique for neat lawn edges along fences and flower beds.

Operating Instructions and Dealer Support

Always read your STIHL product’s operating instructions before use. You can download manuals online or visit your local STIHL Approved Dealer for expert advice, fitting support, and safety product demonstrations.

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Summary: How to Use a Grass Trimmer Safely
  • Always wear the correct PPE according to your tool’s instructions.
  • Ensure your harness fits properly for safe and comfortable operation.
  • Use a right-to-left sweep for efficient cutting.
  • For tall grass, trim in two passes — high then low.
  • Use the quadrant method for large areas.
  • Work across slopes rather than down for stability.
  • Trim around trees and borders carefully using the guard for guidance.

✅ Grass Trimmer Safety & PPE Checklist

Helmet icon

Helmet

Safety glasses icon

Eye & Face Protection

Ear protection icon

Hearing Protection

Gloves icon

Protective Gloves

Cut protection trousers icon

Cut-Protection Trousers

Safety boots icon

Safety Boots

  • Inspect all PPE before each use – replace if damaged or worn.
  • Adjust your harness for balance and comfort.
  • Ensure no people or pets are within 15 m while operating.
  • Refuel or recharge only when the trimmer is switched off and cooled.
  • Keep an escape route clear and be aware of footing on slopes.
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