Kohree Electric Trailer Jack 7500 lbs User Manual

1. Introduction

This manual provides instructions for the proper installation, operation, and maintenance of your Kohree Electric Trailer Jack 7500 lbs. This heavy-duty electric tongue jack is designed for RVs, campers, and travel trailers, offering a lifting capacity of up to 7500 lbs and a 22-inch lift range. It features a simple one-button operation, an integrated level, an LED light for night use, and a manual crank handle for emergency situations. Please read this manual thoroughly before use to ensure safe and efficient operation.

Image: The Kohree Electric Trailer Jack 7500 lbs installed on a travel trailer, demonstrating its robust design and high lifting capacity.

2. Safety Information

• Always ensure the trailer is properly chocked before operating the jack to prevent accidental movement.
• Do not exceed the maximum lifting capacity of 7500 lbs. Overloading can cause damage to the jack and potential injury.
• Keep hands, feet, and clothing clear of moving parts during operation.
• Ensure the jack is installed on a stable, level surface. Avoid operating on soft ground or uneven terrain without proper support.
• Disconnect power to the jack before performing any maintenance or adjustments.
• Use the manual crank handle only when electric power is unavailable or for fine adjustments.
• Wear appropriate personal protective equipment (PPE) during installation and operation.
• This jack is designed for lifting and leveling trailers. Do not use it for lifting people or as a permanent support device.

3. Package Contents

Verify that all components are present in the package before beginning installation.

• Electric Trailer Jack (1)
• Jack Cover (1)
• Manual Crank Handle (1)
• Mounting Screws with Nuts (3 sets)
• White Wiring (1)

Image: All items included in the Kohree Electric Trailer Jack package, laid out for inspection.

4. Specifications

Image: Product size diagram illustrating the jack's retracted, minimum extended (23.8"), and maximum extended (31.7") heights.

5. Setup & Installation

1. Prepare the Trailer: Park the trailer on a level surface and chock the wheels securely to prevent any movement. Support the trailer tongue with jack stands or a stable block before removing the old jack.
2. Remove Old Jack (if applicable): Disconnect any wiring from the old jack. Remove the bolts securing the old jack to the A-frame.
3. Mount the New Jack: Position the Kohree Electric Trailer Jack onto the trailer's A-frame mounting plate. Align the three mounting holes on the jack with the holes on the trailer's A-frame. Secure the jack using the provided bolts, nuts, and washers. Ensure all fasteners are tightened securely.
4. Wiring Connection:
   • Connect the black wire (positive +) from the jack to the positive (+) terminal of your 12V battery.
   • Connect the white wire (negative -) from the jack to the negative (-) terminal of the battery or to a clean, unpainted section of the trailer frame for a good ground connection.
   • Ensure all electrical connections are secure and protected from weather.
5. Test Operation: Once installed and wired, briefly test the jack's up and down functions to ensure proper operation.

Image: Wiring instructions for connecting the electric trailer jack to a 12V battery, showing positive and negative connections.

6. Operating Instructions

6.1 Electric Operation

1. Power On: Ensure the jack is connected to a 12V power source.
2. Lift/Lower: Use the "UP" or "DOWN" switch on the jack head to raise or lower the trailer tongue. The jack will automatically stop when it reaches its maximum or minimum extension.
3. Leveling: Utilize the integrated bubble level on top of the jack head to assist in achieving proper trailer leveling.
4. LED Light: Activate the built-in LED light using the dedicated switch for improved visibility during nighttime operation.

Image: Detailed view of the jack's control panel, indicating functions for lighting, lifting/lowering, and manual handle access.

Image: The electric trailer jack in use at night, with its integrated LED light providing illumination for hitching or leveling.

6.2 Manual Operation

In case of power failure or for precise adjustments, the jack can be operated manually.

1. Remove the rubber plug from the top of the jack head to access the manual crank port.
2. Insert the provided manual crank handle into the port.
3. Turn the handle clockwise to lower the jack and counter-clockwise to raise the jack.
4. After use, remove the crank handle and replace the rubber plug to protect the mechanism from elements.

7. Maintenance

• Regular Cleaning: Keep the jack clean from dirt, mud, and road grime. Use a damp cloth to wipe down the exterior.
• Lubrication: Periodically inspect the inner and outer tubes for smooth operation. Apply a light coat of grease to the inner tube if necessary.
• Weather Protection: Use the provided weatherproof cover when the jack is not in use or during storage to protect it from rain, dust, and UV exposure.
• Electrical Connections: Periodically check all electrical connections for corrosion or looseness. Clean and tighten as needed.
• Inspection: Before each use, inspect the jack for any signs of damage, wear, or loose fasteners. Do not operate if damage is observed.

Image: The electric trailer jack with its weatherproof cover, demonstrating protection against outdoor elements.

8. Troubleshooting

9. Warranty & Support

The Kohree Electric Trailer Jack 7500 lbs comes with a 1 Year Manufacturer Service. Kohree's service team provides professional support to address all your product-related questions.

For technical assistance, warranty claims, or general inquiries, please refer to the contact information provided on the official Kohree website or your purchase documentation.

Manufacturer: KOHREE