User Manual for Bosch ROTAK18V2-38 and ROTAK18V2-43 Cordless Lawn Mowers
Quick guide for the Bosch ROTAK18V2-38 and ROTAK18V2-43 cordless lawn mowers. Includes assembly, operation, battery maintenance, and troubleshooting steps.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
This manual provides essential instructions for the Bosch ROTAK18V2-38 and ROTAK18V2-43 cordless lawn mowers. Before use, ensure the battery is fully charged. Assembly involves unfolding the handle and setting the working height. To operate, insert the battery, switch on using the handle controls, and mow. Always remove the battery before maintenance or cleaning.

Safety
Read all safety warnings and instructions. Failure to follow these can result in electric shock, fire, or serious injury. Keep bystanders and animals away from the working area. Always wear sturdy, non-slip footwear and long trousers. Do not use the lawnmower in wet grass or during lightning storms.
Assembly and Operation
Refer to the illustrations in the manual for specific steps:




- Handle Assembly: Follow steps B-C for ROTAK18V2-38 or F for ROTAK18V2-43.
- Grass Box: Assemble and attach as shown in step G.
- Cutting Height: Adjust using the setting shown in step H.
- Battery: Insert as shown in step I.
- Operation: Use the controls on the handle to switch on/off (J1-J2).
Maintenance and Storage
Always remove the battery before performing maintenance. Keep the product and ventilation slots clean. Never spray with water or immerse in water. Store in a dry, secure place out of reach of children. Ensure all nuts, bolts, and screws are tight for safe operation. Inspect the blade regularly and replace if worn or damaged (step N).

Troubleshooting
If the motor does not start, check if the battery is charged, correctly inserted, or if the motor protection has been triggered. If the cut is irregular, check the cutting height and blade sharpness. For excessive vibration, check if the blade nut/screw is loose or the blade is damaged.
Technical Data
The mowers operate on a 36V (2 x 18V) system. Cutting widths are 38 cm (ROTAK18V2-38) and 43 cm (ROTAK18V2-43). Cutting height is adjustable between 30-75 mm.
Manufacturer information
Bosch
Practical help
Common problems
Check battery charge, ensure it is fully inserted, or allow the motor to cool down if protection was triggered.
Set a larger cutting height or replace a blunt blade.
Tighten the blade nut/screw to 25 Nm or replace a damaged blade.
Before use
- Check battery charge level
- Clear the lawn of stones, sticks, and wires
- Check blade condition
- Ensure all guards are properly mounted
- Wear protective footwear and long trousers
Images and diagrams
- A1/A2: Package contents
- B-C: Handle assembly for ROTAK18V2-38
- F: Handle assembly for ROTAK18V2-43
- G: Grass box assembly
- N: Blade maintenance
Model compatibility
- Compatible with PBA 18V...W-C batteries (4.0Ah, 5.0Ah, 6.0Ah)
- Not compatible with AL 1814 CV, AL 1820 CV, AL 1860 CV chargers
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.