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Bosch GRT 18V-40 Professional Battery Trimmer User Manual

Quick guide for the Bosch GRT 18V-40 Professional battery trimmer, covering assembly, operation, maintenance, and troubleshooting.

Table of contents

Manual images

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Overview of the GRT 18V-40 trimmer components. Page 3 Prepare the trimmer shaft for assembly. Page 4 Align the two main shaft sections. Page 4 Attach the auxiliary handle to the shaft. Page 6 Overview of the fully assembled trimmer shaft. Page 8 Secure the auxiliary handle in place. Page 9

Quick guide from the manual

This document provides essential information for the safe and efficient operation of the Bosch GRT 18V-40 Professional battery trimmer. It covers assembly, battery handling, operation, maintenance, and troubleshooting.

Device Description

The GRT 18V-40 is a battery-powered garden tool designed for trimming and edge cutting of grass, light undergrowth, weeds, and nettles. It is intended for use on the ground.

Overview of the GRT 18V-40 trimmer components.
Overview of the GRT 18V-40 trimmer components.

Assembly and Operation

Prepare the trimmer shaft for assembly.
Prepare the trimmer shaft for assembly.
Align the two main shaft sections.
Align the two main shaft sections.
Attach the auxiliary handle to the shaft.
Attach the auxiliary handle to the shaft.
Overview of the fully assembled trimmer shaft.
Overview of the fully assembled trimmer shaft.
Secure the auxiliary handle in place.
Secure the auxiliary handle in place.
Install the protective guard on the cutting head.
Install the protective guard on the cutting head.
Anti-Tangle function operation.
Anti-Tangle function operation.
Mount the protective guard to the shaft housing.
Mount the protective guard to the shaft housing.
Mounting the cutting blade.
Mounting the cutting blade.
Attach the metal cutting blade.
Attach the metal cutting blade.
Install the trimmer line spool.
Install the trimmer line spool.
  • Shaft assembly: Connect the shaft components as shown in figure C.
  • Protection guard: Mount the protection guard (12) using the screw (15) as shown in figure D.
  • Handle: Mount and adjust the handle (1) using the lever (7) as shown in figures F-H.
  • Battery: Insert the charged battery (4) into the battery holder until it clicks into place (figure J).
  • Trimming: Use the on/off switch (5) and the lock-off button (2) to operate the trimmer (figure K).
  • Edge cutting: Use the lock-off button (3) for edge cutting (figure L).
  • Line feeding: Use the Pro-Tap button (14) to release the cutting line (figure N).
  • Anti-Tangle: The tool features an automatic anti-tangle function to clear blockages (figure O).

Maintenance and Storage

Always remove the battery before performing any maintenance, cleaning, or storage. Clean the product with a cloth; do not use solvents or water sprays. Store in a dry, secure place out of the reach of children.

Troubleshooting

If the motor does not start, check the battery charge level, ensure the battery is fully inserted, or check for grass wrapped around the spool. For heavy vibrations, check the cutting line and ensure the spool is correctly fitted.

Manufacturer information

Bosch

Brand profile
Manufacturer website https://www.bosch.com Support https://www.bosch.com/contact

Practical help

Common problems

Motor does not start

Check battery charge, ensure battery is fully inserted, or remove grass wrapped around the spool.

Poor cutting performance

Move the device more slowly, rewind the cutting line, or clean the protection guard.

Heavy vibrations

Check if the cutting line is broken, remove mud/contamination from the cutting head, or ensure the spool is correctly fitted.

Before use

  • Ensure the battery is fully charged.
  • Check that the protection guard is correctly mounted.
  • Verify the cutting line or blade is not damaged.
  • Ensure the handle is securely adjusted.
  • Check that the battery is fully inserted and locked.

Specs in practice

Rated voltage
18V, indicating the battery system compatibility.
Cutting diameter (line)
40 cm, the maximum width of the cutting path.
Cutting line diameter
2.4 mm, the required thickness for the cutting line.

Images and diagrams

  • Figure A: Overview of all components.
  • Figure M: Instructions for mounting the cutting line.
  • Figure Q: Instructions for mounting the cutting blade.
  • Figure Y: Correct assembly of the spool components.

Model compatibility

  • Compatible with Bosch GBA 18V and ProCORE18V battery series.
  • Recommended battery capacity: 4.0Ah or higher.

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Manual page author

Emily Carter

User documentation editor

Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.