Tools / Power Tools
Bosch GRA 18V2-46 Cordless Lawnmower User Manual
Quick guide for the Bosch GRA 18V2-46 cordless lawnmower, covering assembly, battery operation, mowing, mulching, and troubleshooting.
Table of contents
Manual images
Jump to the sectionQuick guide from the manual
The Bosch GRA 18V2-46 is a cordless lawnmower powered by two 18V batteries. Important: Always use two batteries with the same charge level. Do not combine full and partially charged batteries, as the runtime is determined by the least charged battery.
Assembly and Operation
Follow the steps in the manual for unfolding the handle, adjusting the working height, and inserting the batteries. The lawnmower will not start if the handle is in the storage position.
Mulching Function
To use the mulching function, remove the grass bag and insert the mulch adapter into the ejection chute. Close the ejection flap. Remove the adapter when you wish to collect grass clippings again.
Operation
The lawnmower is operated by inserting the isolator key and switching the motor on. Always remove the isolator key and batteries before performing any maintenance, cleaning, or when leaving the machine unattended.
Maintenance and Cleaning
Keep the lawnmower and its ventilation slots clean for safe operation. Never spray the product with water or immerse it. Regularly check the blade and grass catcher for wear or damage. If the blade is blunt, replace it. Always wear protective gloves when working near the blade.
Troubleshooting
If the motor does not start, check if the batteries are charged, correctly inserted, or if the motor protector has activated. If the lawnmower operates intermittently, check the internal wiring or if the motor protector has activated due to long grass. If the cut is uneven, increase the cutting height or replace a blunt blade.
Manufacturer information
Bosch
Practical help
Common problems
Motor does not start
Check if batteries are charged and correctly inserted, ensure the isolator key is fully inserted and turned to ON, and check if the handle is in the operating position.
Lawnmower operates intermittently
Motor protector may have activated; allow the motor to cool and increase the cutting height.
Ragged finish or motor labours
Increase the cutting height or replace a blunt blade.
Blade does not rotate
Clear any obstructions from the blade area (wear protective gloves).
Before use
- Ensure both batteries are fully charged and have the same charge level.
- Check that the handle is in the operating position.
- Inspect the area for stones, sticks, wires, and other foreign objects.
- Verify that the blade and blade assembly are not worn or damaged.
- Ensure the grass catcher is correctly fitted if not using the mulching function.
Specs in practice
- Cutting width
- 46 cm
- Cutting height
- 30–70 mm
- Grass bag capacity
- 60 liters
- Rated voltage
- 36V (2 x 18V)
Images and diagrams
- Figure A: Delivery scope
- Figure B-D: Unfolding and mounting the handle
- Figure E: Fitting/removing the grass bag
- Figure F: Setting the height of cut
- Figure G: Inserting both batteries
Model compatibility
- Compatible with GBA 18V XL and ProCORE18V batteries.
- Recommended: GBA 18V XL ≥ 3.0Ah or ProCORE18V ≥ 4.0Ah.
- Use only approved Bosch chargers (GAL 18..., GAX 18...).
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.