Introduction
This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of the MULIN ML18-003 Power Recliner Replacement Motor. This linear actuator is designed for use in electric recliner sofas, lift chairs, and massage seat beds, offering a reliable solution to restore functionality to your furniture.
Safety Information
WARNING:
- Always disconnect power before attempting any installation, maintenance, or troubleshooting.
- Verify your model number and troubleshoot existing switches or the power supply before replacing the motor.
- Ensure all connections are secure and correctly oriented to prevent electrical hazards or damage to the unit.
- This product is intended for indoor use only.
Package Contents
The MULIN ML18-003 replacement kit includes the following components:
- MULIN ML18-003 Linear Actuator Motor
- Power Supply Transformer
- 4.26 Feet AC Power Cord
- 2-Button Hand Control

Image: All components included in the MULIN ML18-003 replacement motor kit, showing the linear actuator, power supply, AC cord, and hand control.
Setup and Installation
Follow these steps to install your MULIN ML18-003 replacement motor:
- Preparation: Disconnect the recliner from the main power supply. Carefully turn the furniture over to access the existing motor and mechanism.
- Remove Old Motor: Disconnect all wires from the old motor, including the power supply and hand control cables. Unbolt or unclip the old linear actuator from the furniture frame. Note the orientation and connection points for reinstallation.
- Install New Motor: Position the new MULIN ML18-003 linear actuator in the same location as the old one. Secure it to the furniture frame using appropriate bolts or clips. Ensure the motor is firmly attached and aligned correctly.
- Connect Wiring: Connect the power supply transformer to the motor. Plug the 2-button hand control into the designated port on the motor. Ensure all connections are snug and secure. Refer to the image below for typical connection points.

Image: Close-up view of the multi-pin plug and other connectors on the MULIN ML18-003 motor, illustrating connection points for the hand control and power supply.

Image: The MULIN ML18-003 linear actuator motor shown installed within a recliner's metal frame, demonstrating its placement and connection to the reclining mechanism.
After installation, carefully return the furniture to its upright position. Reconnect the AC power cord to a wall outlet.
Operating Instructions
The MULIN ML18-003 motor is controlled by a 2-button hand control. Ensure the power cord is securely plugged into a functional wall outlet.
- Extend: Press and hold the "Extend" or "Up" button on the hand control to extend the linear actuator, causing the recliner to move to an open or reclined position.
- Retract: Press and hold the "Retract" or "Down" button on the hand control to retract the linear actuator, causing the recliner to return to a closed or upright position.
Release the button once the desired position is reached. The motor operates at a speed of 36mm per second for smooth and consistent movement.
Maintenance
To ensure the longevity and optimal performance of your MULIN ML18-003 motor, consider the following maintenance tips:
- Regular Inspection: Periodically check all connections and mounting points for tightness and wear.
- Cleaning: Keep the motor and actuator rod free from dust and debris. Use a dry, soft cloth for cleaning. Avoid using liquid cleaners directly on electrical components.
- Lubrication: The linear actuator is generally pre-lubricated. Avoid applying additional lubricants unless specifically instructed by MULIN support, as this may attract dirt or interfere with internal mechanisms.
- Avoid Overloading: Do not exceed the weight capacity of your furniture, as this can strain the motor and reduce its lifespan.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not operate. | No power, loose connection, faulty hand control, or faulty power supply. | Check if the power cord is plugged in. Verify all connections are secure. Test the wall outlet with another device. If possible, test with a known good hand control or power supply. |
| Motor operates slowly or with difficulty. | Low power, obstruction in mechanism, or motor strain. | Ensure the power supply is adequate. Check for any obstructions in the recliner mechanism. Avoid exceeding the furniture's weight limit. |
| Unusual noise during operation. | Friction, loose components, or internal motor issue. | Inspect the mechanism for loose bolts or parts. Ensure the motor is securely mounted. If noise persists, contact customer support. |
If troubleshooting steps do not resolve the issue, please contact MULIN customer support for further assistance.
Specifications
- Model: ML18-003
- Input: DC 28V 1.5A
- Stroke Length: 333mm (13.11 inches)
- Minimum Install Dimension: 157mm
- Operating Speed: 36mm/s
- Interruption Time: 0.5 min / 4 min (Duty Cycle)
- Material: Metal
- Product Dimensions: Approximately 24"D x 7.9"W x 3.9"H
- Item Weight: 4.4 pounds
- Included Components: Actuator, Power Supply Transformer, AC Power Cord, 2-Button Hand Control

Image: The MULIN ML18-003 motor label displaying key specifications such as input voltage, current, and duty cycle.

Image: Diagram illustrating the installation size (157mm), stroke length (333mm), and speed (36mm/s) of the MULIN ML18-003 linear actuator.
Compatibility
The MULIN ML18-003 linear actuator is designed for broad compatibility:
- Direct Replacement: Directly replaces MULIN models ML18-003A, ML18-003G, and ML8-205B1.
- Cross-Brand Compatibility: Also compatible with popular brands such as Okin (model jldq12.157.333k) and Limoss (model 450917).
- Furniture Brands: Suitable for use in recliners from brands like Catnapper and Eric Church.
Always verify your existing motor's model number and specifications (stroke length, installation dimensions, and connectors) to ensure proper fit and function before purchasing a replacement.

Image: A graphic displaying various MULIN ML18 series model numbers, including ML18-003, indicating the range of compatible actuators.
Warranty and Support
Warranty: The MULIN ML18-003 Power Recliner Replacement Motor is backed by a 9-month warranty program, ensuring quality and reliability for your furniture repair needs.
Customer Support: For compatibility questions, product inquiries, or assistance with installation and troubleshooting, please contact MULIN customer support. Our team is available to provide reliable assistance.
You can typically find contact information on the MULIN brand website or through your purchase platform (e.g., Amazon seller "US-Mulin").