Tools / Power Tools
Bosch ROTAK 18V2 Cordless Lawn Mower User Guide
Quick start guide for the Bosch ROTAK 18V2-38 and ROTAK 18V2-43 cordless lawn mowers, covering assembly, operation, maintenance, and troubleshooting.
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This document provides essential instructions for the Bosch ROTAK 18V2-38 and ROTAK 18V2-43 cordless lawn mowers. It covers initial setup, battery handling, operation, and maintenance. Always ensure the battery is removed before performing any maintenance or cleaning to prevent accidental startup.
Assembly and Operation
Follow the assembly steps provided in the manual for your specific model (ROTAK 18V2-38 or 18V2-43). Ensure the handle is correctly unfolded or mounted and the working height is adjusted before use. The grass box should be assembled and attached as shown in the diagrams.
Battery Handling
Use only the chargers specified in the technical data. Lithium-ion batteries are supplied partially charged. For optimal performance, fully charge the battery before the first use. Check the charge level using the LEDs on the battery. Store the battery separately from the mower in a temperature range of -20 °C to 50 °C.
Operation and Mulching
To start the mower, follow the specific instructions for your model. For mulching, remove the grass box and insert the mulch adapter into the ejection opening. The best time to mulch is late afternoon when the grass is dry. Set the cutting height to remove about one-third of the grass blade length (10-20 mm).
Maintenance and Troubleshooting
Keep the mower and ventilation slots clean. If the motor does not start, check if the battery is charged, correctly inserted, or if the motor protection has been triggered. If the cutting pattern is irregular, check the cutting height and the condition of the blade. If the blade is blunt or damaged, replace it. Always wear gardening gloves when handling the blade.
Technical Data
The mower operates on a 36V (2 x 18V) system. Cutting widths are 38 cm (ROTAK 18V2-38) and 43 cm (ROTAK 18V2-43). Cutting height is adjustable between 30-75 mm.
Manufacturer information
Bosch
Practical help
Common problems
Motor will not start
Check if the battery is charged, correctly inserted, or if the motor protection has been triggered. If the internal wiring is defective, contact Bosch customer service.
Irregular cutting pattern or motor working with difficulty
Set a larger cutting height, replace a blunt blade, or check for blockages under the mower.
Blade does not rotate after switching on
Switch off the mower, remove the battery, and clear any grass blockage from the blade area.
Excessive vibrations or noise
Tighten the blade nut/screw to 25 Nm or replace a damaged blade.
Before use
- Ensure the battery is fully charged.
- Check that the blade is not worn or damaged.
- Ensure all guards are properly mounted.
- Clear the lawn of stones, sticks, wires, and other foreign objects.
- Check that the grass box is correctly attached.
- Wear non-slip protective footwear and long trousers.
Specs in practice
- Cutting width
- The width of the grass strip cut in one pass (38 cm or 43 cm).
- Cutting height
- Adjustable range (30-75 mm) for the grass length.
- Rated voltage
- 36V system, powered by two 18V batteries.
Images and diagrams
- Figures A1-A2: Items included in the delivery.
- Figures B-C: Folding out the handle and setting working height (ROTAK 18V2-38).
- Figure F: Mounting the handle (ROTAK 18V2-43).
- Figure G: Assembling and fitting the grass box.
- Figure N: Blade maintenance and replacement.
Model compatibility
- Compatible with Bosch PBA 18V series batteries (4.0 Ah, 5.0 Ah, 6.0 Ah).
- Not compatible with AL 1814 CV, AL 1820 CV, or 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.