Tools / Power Tools
Bosch UniversalGrassCut 18V-23-450 | 18V-26-500 Grass Trimmer User Guide
Quick guide for the Bosch UniversalGrassCut 18V-23-450 and 18V-26-500 grass trimmers, covering assembly, operation, maintenance, and troubleshooting.
Table of contents
Manual images
Jump to the sectionQuick guide from the manual
This document provides essential information for the Bosch UniversalGrassCut 18V-23-450 and 18V-26-500 grass trimmers. It covers safety, assembly, operation, and maintenance. Always remove the battery before performing any maintenance or adjustments.
Device Description
The trimmer is designed for domestic use to trim grass and weeds at ground level, including areas under obstacles and along lawn edges that are inaccessible to lawn mowers. It is not intended for commercial or industrial use.
Assembly
Before assembly, ensure the battery is removed. The handle (1) can be adjusted by pressing buttons (7). The protection guard (10) must be mounted on the trimmer head using the provided screw and should not be removed once installed.
Operation
To switch on, press the lock-off button (3) followed by the On/Off switch (4). To switch off, release the switch. The trimmer head can be rotated 180° for edge cutting by pressing button (2). The trimmer features a semi-automatic line feeding system that advances the line each time the On/Off switch is pressed. Manual feeding is possible by pressing the line-feed button (17).
Maintenance and Cleaning
Always remove the battery before transport, storage, or maintenance. Keep the tool and ventilation slots clean. Do not spray with water or immerse in water. Store in a dry, secure place out of reach of children. Use only Bosch-approved replacement parts.
Troubleshooting
If the motor does not start, check if the battery is charged or if it is too hot/cold. If the tool vibrates heavily, check the cutting system for damage or debris. For persistent issues, contact Bosch customer service.
Manufacturer information
Bosch
Practical help
Common problems
Motor does not start
Check if the battery is discharged or if it is too hot/cold.
Trimmer vibrates heavily
Check the cutting system for damage or debris between the spool housing and the line-feed button.
Cutting line breaks frequently
Ensure the trimmer is used correctly; trim only with the tip of the line and avoid contact with hard objects.
Before use
- Ensure the battery is fully charged.
- Check the cutting line for damage or excessive wear.
- Ensure the protection guard is correctly mounted.
- Clear the working area of stones, sticks, wires, and other foreign objects.
- Check the area for wildlife or pets.
Specs in practice
- Rated voltage
- 18V, indicating the battery system compatibility.
- Cutting diameter
- 23 cm for 18V-23-450 and 26 cm for 18V-26-500.
- Cutting line diameter
- 1.6 mm, the standard line thickness for this model.
Images and diagrams
- Figure A: Overview of product components.
- Figure C: Adjusting the handle position.
- Figure D: Mounting the protection guard.
- Figure H: Switching between lawn trimming and edge cutting modes.
- Figure K-M: Dismounting the spool, winding the line, and mounting the spool.
Model compatibility
- Compatible with Bosch PBA 18V series batteries (1.5 Ah to 6.0 Ah).
- Use only Bosch-approved cutting elements.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.