User Manual for Bosch GRA 18V2-46 Cordless Lawnmower
Quick guide for the Bosch GRA 18V2-46 cordless lawnmower. Includes setup, operation, maintenance, troubleshooting, and safety instructions.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
This lawnmower is designed for mowing lawns at ground level. It requires two 18V batteries to operate. Always ensure both batteries have the same charge level before use.

Safety
- Keep bystanders away from the working area.
- Keep hands and feet away from the rotating blades.
- Always remove the isolator key and batteries before performing maintenance, cleaning, or transport.
- Do not use the lawnmower in wet grass or during bad weather (e.g., risk of lightning).
Operation
Inserting Batteries: Insert two charged batteries into the battery port until they lock in place. Ensure both batteries have the same charge level.


Starting: Insert the isolator key, then switch on the motor.
Mulching: Remove the grass bag and insert the mulch adapter into the ejection chute. Close the ejection flap.
Maintenance

- Keep the product and ventilation slots clean.
- Do not spray the product with water or immerse it in water.
- Regularly check the blade and blade assembly for wear or damage.
- Tighten blade nut/bolt to 25-30 Nm if loose.
Troubleshooting
If the motor does not start, check if the batteries are charged, the isolator key is inserted correctly, or if the motor protector has activated (let the motor cool down and increase cutting height).
Manufacturer information
Bosch
Practical help
Common problems
Check if batteries are charged, inserted correctly, isolator key is in ON position, or if motor protector has activated.
Increase cutting height or replace blunt blade.
Tighten blade nut/bolt (25-30 Nm) or replace damaged blade.
Before use
- Check area for wildlife/pets
- Remove stones, sticks, wires, bones
- Visually inspect blade and assembly
- Ensure batteries are fully charged and same charge level
Specs in practice
- Rated voltage
- 36V (2 x 18V) - requires two 18V batteries
- Cutting width
- 46 cm
- Cutting height
- 30-70 mm
Images and diagrams
- Figure A: Delivery scope
- Figure B-D: Handle assembly
- Figure E: Grass bag installation
- Figure F: Cutting height adjustment
- Figure G: Battery insertion
Model compatibility
- Compatible with GBA 18V XL and ProCORE18V batteries.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.