Tools / Power Tools
Bosch GRT 18V-33 | GFR 18V-23 Grass Trimmer / Brushcutter User Manual
Quick guide for the Bosch GRT 18V-33 and GFR 18V-23 grass trimmer and brushcutter, covering assembly, battery operation, cutting techniques, maintenance, and troubleshooting.
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This document provides essential information for the safe and efficient operation of the Bosch GRT 18V-33 and GFR 18V-23 grass trimmers and brushcutters. Always read the full safety instructions provided in the manual before use.
Device Description
The device is designed for trimming grass, light undergrowth, weeds, nettles, saplings, and smaller shrubs at ground level. It features an Anti-Tangle function to prevent blockages and a Pro-Tap system for easy line feeding.
Assembly and Operation
- Assembly: Follow the illustrated steps (A-U) for mounting the protection guard, plant protector, kickback protection, and carrying strap.
- Battery: Insert the charged battery until it clicks. Use only recommended chargers.
- Operation: Use both hands to operate the tool. Keep the cutting head away from your body and other objects during startup.
- Line Feeding: Tap the trimmer spool lightly on the ground to feed the line (Pro-Tap).
- EasyWind: Allows line loading without disassembling the spool.
Maintenance and Cleaning
- Remove the battery before any maintenance, transport, or storage.
- Keep the product and ventilation slots clean.
- Never spray the product with water or immerse it in water.
- Store in a secure, dry place out of reach of children.
- Sharpening and balancing the cutting blade requires practice; Bosch recommends using an approved replacement blade.
Troubleshooting
If the motor does not start, check the battery charge and ensure it is fully inserted. If the tool functions intermittently, contact Bosch customer service. For heavy vibrations, check the cutting head/blade for damage or imbalance and ensure all components are correctly fitted.
Manufacturer information
Bosch
Practical help
Common problems
Motor does not start
Check battery charge, ensure battery is fully inserted, or allow it to cool/warm up.
Poor cutting performance
Move the device slower, rewind the cutting line, or clean the protection guard.
Heavy vibrations
Check if the cutting line is broken, or if the cutting head/blade is imbalanced or incorrectly fitted.
Anti-Tangle function does not remove blockage
Remove the battery and manually clear the blockage.
Before use
- Wear eye, ear, and head protection.
- Wear slip-resistant footwear and safety gloves.
- Inspect the work area for wildlife and foreign objects (stones, sticks, wires).
- Ensure the cutting tool or blade is not damaged.
- Ensure the battery is fully charged and correctly inserted.
Specs in practice
- Rated voltage
- 18V, indicating the battery system compatibility.
- Cutting diameter (line)
- 33 cm, the effective width of the cut when using the line.
- Cutting diameter (blade)
- 23 cm, the effective width of the cut when using the blade (GFR 18V-23 only).
Images and diagrams
- Figures A-U provide visual step-by-step instructions for assembly and operation.
- Figure N illustrates the technique for cutting high and dense grass in stages.
- Figure M shows the correct assembly of the cutting blade.
Model compatibility
- Compatible with Bosch GBA 18V and ProCORE18V battery series.
- Recommended battery capacity: ≥ 4.0Ah.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.