Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your MZK 40V Cordless Electric Lawn Mower. Please read this manual thoroughly before initial use and retain it for future reference.

Figure 1: MZK 40V Cordless Electric Lawn Mower with included batteries and charger.
Safety Information
Always prioritize safety when operating power tools. Adhere to the following guidelines:
- Read the Manual: Understand all instructions and warnings before use.
- Personal Protective Equipment: Wear appropriate eye protection, hearing protection, and sturdy footwear.
- Clear the Area: Before mowing, remove all objects such as rocks, sticks, wires, and toys from the lawn.
- Keep Bystanders Away: Ensure children, pets, and other people are at a safe distance from the mowing area.
- Inspect Before Use: Check the mower for any damage, loose parts, or worn components. Ensure the blade is sharp and securely fastened.
- Avoid Wet Grass: Do not operate the mower in wet conditions, as this can be slippery and dangerous.
- Slope Safety: Exercise extreme caution when mowing on slopes. Mow across the face of slopes, never up and down.
- Battery Safety: Use only specified batteries and chargers. Do not expose batteries to extreme temperatures or water.
- Maintenance: Disconnect the battery before performing any maintenance, cleaning, or when clearing a clogged chute.
- Storage: Store the mower and batteries in a dry, secure location away from children.

Figure 2: The MZK 40V lawn mower is powered by two 20V batteries.
Components Overview
Your MZK 40V Cordless Electric Lawn Mower includes the following main components:
- Mower Deck: 13-inch cutting width with a rust-resistant design.
- Brushless Motor: Provides efficient and powerful cutting performance.
- Handlebar: Ergonomic design for comfortable operation, foldable for compact storage.
- Grass Catcher: 25-liter capacity for collecting grass clippings.
- Batteries: Two 20V (4AH) Lithium-ion batteries combine for 40V power.
- Charger: Dual-port charger for simultaneous battery charging.
- Height Adjustment Lever: Allows for 4-position cutting height adjustment (1.5 to 2.8 inches).
- Safety Key/Switch: Two-step activation for safe startup.

Figure 3: The mower features a 13-inch rust-resistant deck and a powerful brushless motor.
Setup
1. Assembly
Follow these steps to assemble your lawn mower:
- Attach the Handlebar: Secure the upper and lower handlebar sections using the provided knobs and bolts. Ensure all connections are tight.
- Install the Grass Catcher: Lift the rear discharge flap and hook the grass catcher onto the mower. Ensure it is securely seated.
2. Battery Charging and Installation
For optimal performance, fully charge both batteries before first use.
- Connect the charger to a power outlet.
- Insert both 20V batteries into the charger slots. Indicator lights will show charging status.
- Once fully charged, remove batteries from the charger.
- Open the battery compartment cover on the mower.
- Insert both charged batteries firmly into their respective slots until they click into place.
- Close the battery compartment cover.

Figure 4: Inserting the two 20V batteries into the mower's battery compartment.
3. Adjusting Cutting Height
The mower offers 4 cutting height positions, ranging from 1.5 inches to 2.8 inches. Adjust the height according to your lawn's needs and grass type.
- Ensure the mower is turned off and the safety key is removed.
- Locate the height adjustment lever on the side of the mower.
- Pull the lever outwards and move it to the desired height setting. Ensure it locks firmly into position.

Figure 5: Adjusting the cutting height using the lever.
Operating Instructions
1. Starting the Mower
The MZK mower features a two-step activation process for safety:
- Insert the safety key into its slot.
- Press and hold the safety button, then pull the bail lever towards the handle. The motor will start. Release the safety button once the motor is running.

Figure 6: The two-step easy start mechanism ensures safe operation.
2. Mowing Techniques
For best results, mow in straight, overlapping lines. Avoid cutting more than one-third of the grass blade length at a time. The mower's smart RPM automatic adjustment feature optimizes power for varying grass conditions.
Video 1: Official MZK 40V Lawn Mower Introduction. This video demonstrates the mower's features, including its quiet operation, height adjustment, and ease of use in various grass conditions.
3. Grass Collection and Mulching
Your MZK mower offers 2-in-1 versatility for grass management:
- Rear Bagging: When the grass catcher is attached, clippings are collected for easy disposal. Monitor the fill level and empty the 25-liter bag when full to maintain cutting efficiency.
- Mulching: To mulch grass clippings, remove the grass catcher. The mower will then finely cut and redistribute the clippings back onto the lawn, returning nutrients to the soil.

Figure 7: The mower supports both rear bagging and mulching for flexible lawn care.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your mower.
- Cleaning: After each use, disconnect the battery and clean the mower deck and grass chute to prevent grass buildup. Use a damp cloth; do not use water jets or harsh chemicals.
- Blade Care: Periodically inspect the blade for sharpness and damage. A dull or damaged blade can affect cutting quality and mower efficiency. Replace if necessary.
- Battery Care: Store batteries in a cool, dry place. Do not store fully discharged batteries for extended periods. Recharge them periodically if not in use.
- Grass Catcher: Empty and clean the grass catcher regularly to prevent mold and maintain airflow.
Storage
The MZK lawn mower is designed for compact storage, saving up to 70% space.
- Disconnect and remove the batteries before storing.
- Fold the handlebar down.
- The mower can be stored vertically to minimize its footprint.
- Store in a dry, protected area away from direct sunlight and extreme temperatures.

Figure 8: The mower's lightweight design (26.5 lbs) makes it easy to transport and store.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Mower does not start |
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| Mower stops during operation |
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| Uneven cutting |
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Specifications
| Feature | Specification |
|---|---|
| Brand | MZK |
| Model Number | ET1608-1 |
| Power Source | Battery Powered (2 x 20V) |
| Battery Capacity | 2 x 4AH Lithium-ion |
| Cutting Width | 13 Inches |
| Cutting Height Adjustment | 4-Position (1.5 to 2.8 Inches) |
| Grass Catcher Capacity | 25 Liters |
| Item Weight | 24.3 Pounds (approx. 11 kg) |
| Product Dimensions | 30"D x 40"W x 15"H |
| Operation Mode | Automatic |
Warranty and Support
For warranty information, technical support, or to order replacement parts, please refer to the contact information provided with your product packaging or visit the official MZK website.





