Brushcutter and professional mower safety

Professional brush cutters and lawn mowers can throw objects, cause cutting injuries or overturn. Machine and attachment selection should start with the ground conditions and the people who may approach the work.

In brief

Compatible attachments, projectile control and equipment selection for grounds maintenance.

Contents
  1. The attachment changes the risk
  2. Control what can be thrown
  3. Slopes and ride-on equipment
  4. Stopping, clearing and maintaining
  5. Related concepts
  6. References

A–Z dictionary →

The attachment changes the risk

A cutting head that physically fits is not necessarily compatible. The manufacturer must provide for the combination of machine, cutting attachment and guard. Unapproved accessories made from chains or articulated metal parts can break and eject high-energy fragments.

HSE has documented serious incidents involving these arrangements. An ordinary brush-cutter guard does not make every cutting head safe. A proposed modification should be resolved with the manufacturer or a competent service provider, rather than by removing a guard so that the accessory can rotate freely.

Control what can be thrown

Stones, wire and debris hidden in vegetation can become projectiles. Preparation includes surveying the area and controlling access by pedestrians, colleagues and vehicles. A working area that initially appears empty may change while cutting is in progress.

Eye and face protection, footwear, appropriate clothing and hearing protection should reflect the assessment. They support guarding and separation; they do not protect a bystander outside the operator’s field of vision. Consider Strikes, cuts and flying particles at work throughout the potentially affected area, including nearby paths and places where other people may stop.

Slopes and ride-on equipment

A mower’s behaviour depends on its geometry, traction and attachments. Catchers, added loads and changing ground can affect stability. Long grass may conceal obstacles, while wet conditions reduce grip. Knowing only the nominal slope angle does not establish that a route is safe.

Choose another maintenance method when the ground is unsuitable. Manufacturer limits and site assessment determine where each machine can operate. A rollover protective structure and its associated restraint system do not authorise work on every bank or slope and do not remove the need to avoid hazardous terrain.

Stopping, clearing and maintaining

Operator-presence devices, guards and deflectors should remain functional. Abnormal vibration, an impact or a damaged component requires use to stop and the machine to be checked in accordance with its instructions.

Clearing trapped grass, adjustment and repair require control of residual movement and prevention of unexpected starting. No intervention should occur while the cutting element is running. Checks should also cover brakes, steering and tyres where fitted, together with safe storage and refuelling arrangements for combustion-powered equipment. Defects must be resolved before the machine returns to work.

References

  1. HSE — Non-standard attachments on brush cutters. Official source
  2. CCOHS — Grass trimmers and brush cutters. Official source
  3. WorkSafe Victoria — Preventing ride-on lawn mower rollover. Official source
  4. CCOHS — Riding lawn mowers. Official source

Editorial information

Publication date: 2 November 2026.

Editorial responsibility: Sabentis Editorial Team.

Author: Pablo RodríguezLinkedIn

Executive Vice President of the ORP International Foundation and Chief Financial Officer of Sabentis.

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