1. Important Safety Instructions
Always read and understand all safety warnings and instructions before operating this lawn mower. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
- Keep children and bystanders away while operating the lawn mower.
- Wear appropriate personal protective equipment, including eye protection, sturdy footwear, and hearing protection.
- Do not operate the lawn mower in wet conditions or rain.
- Ensure the battery is fully charged before use and always use the specified charger.
- Never attempt to modify the lawn mower or its accessories.
- Disconnect the battery pack before cleaning, maintenance, or when leaving the machine unattended.
2. Product Overview
The LawnMaster CLMF2434G is a powerful and efficient cordless lawn mower designed for ease of use and excellent cutting results. It features a 24V system with two 4.0Ah Lithium-ion batteries, providing ample power for lawns up to 300m².
Key features include:
- Cordless Freedom: Powered by two 24V 4.0Ah batteries for unrestricted movement.
- Intelligent Battery Management: iPower (TM) system adjusts power output based on grass conditions and protects battery life.
- Adjustable Cutting Height: 6 levels from 20mm to 70mm for precise lawn care.
- Mulching Function: Option to finely cut grass clippings and return them to the lawn as nutrients.
- Compact Storage: Folding handles and collapsible grass collector for space-saving storage.

Figure 2.1: The LawnMaster CLMF2434G Cordless Lawn Mower, shown with its two 24V 4.0Ah batteries and fast charger.
3. What's in the Box
Please check the contents of your package to ensure all items are present and undamaged:
- LawnMaster CLMF2434G Lawn Mower Unit
- 2 x 24V 4.0Ah Lithium-ion Batteries
- 1 x Fast Charger
- 32L Grass Collector
- Mulching Plug
- User Manual (this document)

Figure 3.1: Included 24V 4.0Ah Lithium-ion batteries and the fast charger.
4. Setup
4.1. Assembly
The lawn mower requires minimal assembly. The handles can be unfolded and secured. The grass collector may also require minor assembly before attachment. Refer to the diagrams in the printed manual for detailed steps.
4.2. Battery Charging
Before first use, fully charge both 24V 4.0Ah Lithium-ion batteries. The included fast charger can charge a battery in approximately one hour.
- Connect the charger to a suitable power outlet.
- Insert a battery into the charger. The charger's indicator light will show the charging status.
- Once fully charged, remove the battery from the charger.
ATTENTION:
- Read the instructions carefully before charging.
- If the battery is too hot or too cold, it will protect itself and will not charge until it reaches an appropriate temperature. Allow the battery time to adapt to ambient temperature for proper function.
4.3. Battery Installation
To install the batteries:
- Open the battery compartment cover on the top of the mower.
- Slide the fully charged batteries into their respective slots until they click securely into place.
- Close the battery compartment cover.
5. Operating Instructions
5.1. Starting the Mower
To start the lawn mower, ensure the batteries are installed and the safety key (if applicable) is inserted. Press and hold the safety button, then pull the bail lever towards the handle. Release the safety button once the motor starts.
5.2. Cutting Height Adjustment
The cutting height can be easily adjusted using the central lever. There are 6 cutting height positions, ranging from 20mm to 70mm.
- Ensure the mower is turned off and the batteries are removed before adjusting the height.
- Locate the central height adjustment lever on the side of the mower.
- Pull the lever outwards and move it to the desired height setting.
- Release the lever to lock it into position.

Figure 5.1: Adjusting the cutting height using the central lever, showing settings from 20mm to 70mm.
5.3. Mowing Techniques
For best results, mow when the grass is dry. Overlap each pass slightly to ensure an even cut. Avoid overloading the mower by cutting excessively long grass in one pass; raise the cutting height if necessary.
5.4. Mulching Function
The mower includes a mulching function, allowing you to return finely cut grass clippings to your lawn as natural fertilizer.
- Ensure the mower is off and batteries are removed.
- Remove the grass collector.
- Insert the mulching plug into the discharge chute until it is securely in place.
- To revert to collecting, remove the mulching plug and reattach the grass collector.

Figure 5.2: Inserting the mulching plug for nutrient return to the lawn.
5.5. Grass Collector
The 32L grass collector efficiently gathers clippings. It features a 'Full Indicator' to alert you when it needs emptying.
- To attach, hook the collector onto the mower's rear discharge chute.
- Monitor the 'Full Indicator' during operation.
- To empty, turn off the mower, remove batteries, and detach the collector. Dispose of clippings responsibly.

Figure 5.3: The grass collector features a 'Full Indicator' to show when it needs emptying.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your lawn mower.
6.1. Cleaning
After each use, ensure the mower is off and batteries are removed. Clean the underside of the deck and the grass collector to prevent buildup of grass clippings. Use a damp cloth; do not use high-pressure water or solvents.
6.2. Blade Care
The mower is equipped with a durable carbon steel blade. Periodically inspect the blade for sharpness and damage. A dull or damaged blade can affect cutting performance. For blade replacement or sharpening, consult a qualified service technician.
6.3. Storage
The LawnMaster CLMF2434G is designed for compact storage. The handles can be folded, and the grass collector is collapsible, allowing the mower to be stored vertically in small spaces.
- Ensure the mower is clean and dry.
- Remove the batteries and store them in a cool, dry place.
- Fold the handles down and collapse the grass collector.
- Store the mower in a dry, protected area, away from direct sunlight and extreme temperatures.

Figure 6.1: The lawn mower can be stored vertically to save space, ideal for smaller storage areas.
7. Troubleshooting
This section addresses common issues you might encounter with your lawn mower.
| Problem | Possible Cause | Solution |
|---|---|---|
| Mower does not start | Batteries not charged or improperly installed; Safety switch not engaged; Overload protection activated. | Ensure batteries are fully charged and correctly inserted. Engage safety button and bail lever. Allow mower to cool if it was overloaded. |
| Poor cutting performance | Dull or damaged blade; Cutting height too low for grass conditions; Grass collector full. | Inspect and replace/sharpen blade. Increase cutting height. Empty grass collector. |
| Battery not charging | Battery too hot or cold; Charger not connected; Faulty battery/charger. | Allow battery to reach ambient temperature. Check charger connection. Contact support if issue persists. |
| Excessive vibration | Damaged or unbalanced blade; Loose components. | Inspect blade for damage and ensure it is securely fastened. Check all fasteners. Seek professional service if necessary. |
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | CLMF2434G |
| Brand | LawnMaster |
| Power Source | Battery Powered (24V) |
| Battery Type | 2 x Lithium-ion (4.0Ah included) |
| Cutting Width | 34 cm |
| Cutting Height Positions | 6 (20mm - 70mm) |
| Grass Collector Capacity | 32 Liters |
| Material | High Carbon Steel (Blade) |
| Product Dimensions (L x W x H) | 65 x 40 x 35 cm |
| Item Weight | 11.79 Kilograms |
9. Warranty and Support
The LawnMaster CLMF2434G Cordless Lawn Mower comes with a 2-year warranty from the date of purchase, covering manufacturing defects under normal use. Please retain your proof of purchase for warranty claims.
For technical support, troubleshooting assistance, or warranty inquiries, please contact LawnMaster customer service through their official website or the retailer where the product was purchased.
Replacement batteries can be found using ASIN B09CGM16FZ.





