1. Introduction
Thank you for choosing the LEHMANN LGALM-4032 Cordless Lawn Mower. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new lawn mower. Please read this manual thoroughly before first use and keep it for future reference.
The LEHMANN LGALM-4032 is a powerful and efficient cordless lawn mower designed for small to medium-sized lawns, offering a 32 cm cutting width and a 30-liter grass collection box. It is powered by a 40V battery system, ensuring quiet operation and freedom from power cords.
2. Safety Instructions
WARNING: Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
- General Safety: Always wear appropriate personal protective equipment (PPE) such as safety glasses, sturdy footwear, and hearing protection when operating the lawn mower. Keep children and pets away from the mowing area.
- Battery Safety: Use only the specified battery and charger. Do not expose the battery to water or extreme temperatures. Do not short-circuit the battery terminals.
- Operation Safety: Inspect the area to be mowed and remove any objects that could be thrown by the blade. Do not operate the mower in wet grass or rain. Always ensure the safety key is removed when the mower is unattended or during maintenance.
- Maintenance Safety: Disconnect the battery before performing any maintenance, cleaning, or when clearing blockages. Use only genuine replacement parts.
3. Package Contents
Carefully unpack all items and ensure you have received the following:
- LEHMANN LGALM-4032 Cordless Lawn Mower unit
- Grass Collection Box (assembly required)
- Handle Assembly (upper and lower handles)
- 40V 4.0 Ah Lithium-Ion Battery
- Battery Charger
- Safety Key
- User Manual (this document)
Image: The LEHMANN LGALM-4032 cordless lawn mower, showing the main unit, the 40V battery, and the battery charger.
4. Setup
4.1 Handle Assembly
- Attach the lower handle to the mower body using the provided bolts and knobs. Ensure it is securely fastened.
- Connect the upper handle to the lower handle, aligning the holes and securing with the remaining bolts and knobs.
- Route the power cable along the handle and secure it with the cable clips.
4.2 Grass Collection Box Assembly
Assemble the two halves of the grass collection box by snapping them together. Ensure all clips are engaged for a secure fit. Attach the handle to the top of the box.
4.3 Battery Charging and Insertion
- Insert the 40V 4.0 Ah battery into the charger. Plug the charger into a standard power outlet. The indicator lights on the charger will show the charging status.
- Once fully charged (all indicator lights solid green), disconnect the charger from the outlet and remove the battery.
- Open the battery compartment cover on the lawn mower. Insert the charged battery firmly into the battery slot until it clicks into place.
- Insert the safety key into its designated slot.
Image: A detailed view of the 40V 4.0 Ah lithium-ion battery and its dedicated charger, illustrating the charging process.
5. Operating Instructions
5.1 Adjusting Cutting Height
The LEHMANN LGALM-4032 offers 5 cutting height positions, ranging from 20 mm to 60 mm. To adjust the cutting height, use the central height adjustment lever located near the front wheels. Lift the lever and move it to the desired position, ensuring it locks securely.
Image: An illustration demonstrating the adjustable cutting heights of the lawn mower, from 20mm to 60mm, with a visual representation of grass length.
5.2 Starting and Stopping the Mower
- Ensure the battery is inserted and the safety key is in place.
- Press and hold the safety button on the handle.
- While holding the safety button, pull the bail lever towards the handle. The motor will start.
- To stop the mower, release the bail lever. The motor will stop immediately. Always remove the safety key after use.
5.3 Mowing Tips
- For best results, mow dry grass.
- Overlap each cutting pass slightly to ensure even coverage.
- Avoid overloading the mower by cutting excessively long grass in one pass. If the grass is very long, raise the cutting height for the first pass, then lower it for a second pass.
- The 4.0 Ah battery provides an autonomy of up to 60 minutes, covering an area of up to 250 m².
Image: The LEHMANN lawn mower in operation on a lawn, highlighting its capability to cover up to 250 square meters on a single charge.
Image: A top-down perspective of the lawn mower, clearly indicating its 32 cm cutting width as it mows a strip of grass.
6. Maintenance
6.1 Cleaning
- Always remove the battery and safety key before cleaning.
- Clean the exterior of the mower with a damp cloth. Do not use harsh detergents or solvents.
- Remove grass clippings from the underside of the deck and around the blade using a brush or scraper.
- Clean the grass collection box after each use.
6.2 Blade Care
- Regularly inspect the blade for sharpness and damage. A dull or damaged blade will result in poor cutting performance.
- If the blade is dull, it can be sharpened by a qualified service technician. If it is bent or cracked, it must be replaced.
- When replacing the blade, ensure the new blade is correctly balanced and installed with the cutting edge facing the correct direction.
6.3 Battery and Charger Storage
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.
- For long-term storage, charge the battery to approximately 50% capacity.
- Store the charger in a dry environment.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Mower does not start | Battery not charged or not inserted correctly; Safety key not inserted; Safety button/bail lever not engaged. | Charge battery and reinsert; Insert safety key; Ensure safety button is pressed and bail lever is pulled. |
| Poor cutting performance | Dull or damaged blade; Cutting height too low for grass length; Grass collection box full. | Sharpen or replace blade; Adjust cutting height; Empty grass collection box. |
| Mower stops during operation | Battery depleted; Overload protection activated (e.g., very thick grass). | Recharge battery; Raise cutting height or reduce mowing speed. |
| Excessive vibration | Damaged or unbalanced blade; Loose components. | Inspect and replace blade if necessary; Check all fasteners for tightness. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | LGALM-4037 |
| Product Dimensions (L x W x H) | 42 x 118 x 100 cm |
| Weight | 12.5 Kilograms |
| Power Source | Battery Powered (40V) |
| Cutting Width | 32 Centimeters |
| Cutting Height Adjustment | 20 - 60 mm (5 positions) |
| Grass Collection Box Capacity | 30 Liters |
| Battery Type | 4.0 Ah Lithium-Ion |
| Motor Type | Brushless Motor |
| Material | Plastic, Metal |
| Color | Black/Red |
Image: An infographic summarizing key specifications of the LEHMANN LGALM-4032 lawn mower, including weight, voltage, battery capacity, grass box volume, cutting width, and height adjustment range.
Image: A visual representation highlighting the 40 Volt brushless motor, emphasizing its efficiency and durability.
9. Warranty and Support
LEHMANN products are designed for durability and performance. For any questions regarding your LEHMANN LGALM-4032 lawn mower, please refer to the contact information provided with your purchase or visit the official LEHMANN website for support.
Information regarding spare parts availability is not explicitly provided in the product details. Please contact LEHMANN customer service for inquiries about spare parts or warranty claims.
Note: Always refer to the latest warranty terms and conditions provided by the manufacturer at the time of purchase.