1. Introduction
This manual provides detailed instructions for the safe and proper installation, operation, and maintenance of your FORGING MOUNT HY9399-B Long Arm TV Wall Mount. Please read this manual thoroughly before installation and retain it for future reference. This mount is designed for 50-90 inch flat or curved LCD LED OLED TVs, supporting weights up to 198 lbs (90 kg).
2. Safety Information
WARNING: Improper installation may result in serious personal injury and property damage. If you do not understand these instructions or have doubts about the safety of the installation, please contact customer service or a qualified contractor.
- Do not exceed the maximum weight capacity of 198 lbs (90 kg).
- Ensure the mounting surface (wall) can safely support the combined weight of the mount and the television.
- This mount is designed for installation on 16", 18", or 24" wood studs, concrete walls, and brick walls. DO NOT INSTALL ON DRYWALL ALONE.
- Always use appropriate safety equipment during installation, including eye protection.
- Two people are recommended for installation to ensure safety and ease of handling.
3. Package Contents
Verify that all components are present and undamaged before beginning installation. If any parts are missing or defective, contact FORGING MOUNT customer service.

Image: Included hardware components, including M4, M6, M8 screws, washers, and various spacers.
Typical package contents include:
- Wall Plate Assembly
- TV Brackets (2 pieces)
- Mounting Hardware Kit (various screws, washers, spacers for TV and wall attachment)
- Drilling Template
- Bubble Level
- Allen Key
- Instruction Manual
4. Specifications
| Model Number | HY9399-B |
| Compatible TV Sizes | 50" - 90" Flat/Curved LCD LED OLED TVs |
| Weight Capacity | Up to 198 lbs (90 kg) |
| VESA Compatibility | Min: 100x100mm, Max: 600x400mm |
| Extension Range | Retracts to 2.73", Extends up to 36" |
| Tilt Angle | +5° to -10° |
| Swivel Angle | Up to 180° (depending on TV size) |
| Level Adjustment | ±3° Post-installation leveling |
| Material | Heavy-duty Carbon Steel |
| Compatible Wall Types | 16", 18", 24" Wood Studs, Concrete Wall, Brick Wall |

Image: Overview of mount compatibility, including wall types, TV size range, VESA patterns, and maximum weight capacity.

Image: Explanation of VESA patterns, indicating minimum and maximum dimensions.

Image: Detailed view of the mount's robust 6-arm structure and key features.
5. Setup and Installation
Follow these steps carefully for a secure installation. It is highly recommended to have two people for this process.
5.1. Before You Begin
- Gather all tools required (e.g., drill, stud finder, level, screwdriver, socket wrench).
- Identify your TV's VESA pattern and select the appropriate screws and spacers from the hardware kit.
- Determine the desired mounting height and location on the wall.
5.2. Attach Brackets to TV
- Carefully place your TV face down on a soft, clean surface to prevent screen damage.
- Align the two vertical TV brackets with the mounting holes on the back of your TV.
- Select the correct diameter and length screws (M4, M6, or M8) that fit your TV's mounting holes. Use washers and spacers as needed to ensure a snug fit without overtightening.
- Securely fasten the brackets to the TV. Do not overtighten.

Image: Step 1 of installation: Attaching the TV brackets to the back of the television.
5.3. Install the Wall Plate
- Locate the wood studs using a stud finder, or mark drilling points for concrete/brick walls.
- Use the provided drilling template to mark the pilot hole locations on the wall. Ensure the template is level using the included bubble level.
- Drill pilot holes at the marked locations. For wood studs, drill appropriate size holes. For concrete/brick, use a masonry drill bit and insert wall anchors (not always included, check your kit).
- Position the wall plate against the wall, aligning the holes.
- Secure the wall plate to the wall using the lag bolts and washers provided. Tighten all bolts firmly, but do not overtighten.

Image: Step 2 of installation: Installing the wall plate securely to the wall, highlighting its reinforced design.
5.4. Hang TV onto Wall Plate
- With assistance, carefully lift the TV with the attached brackets.
- Hook the TV brackets onto the wall plate. Ensure the TV is securely seated on the wall plate.
- Engage the security locks on the TV brackets to prevent accidental dislodgement. Refer to the specific mechanism in your manual for details.

Image: The FORGING MOUNT HY9399-B TV wall mount in its extended position, illustrating the final step of hanging the TV.
6. Operating Instructions (Adjustments)
Your FORGING MOUNT TV wall mount offers various adjustment options for optimal viewing.
6.1. Extension and Retraction
- Gently pull or push the TV to extend or retract the arm. The mount can extend up to 36 inches and retract to 2.73 inches from the wall.

Image: Illustration of the mount's extension, retraction, and tilt capabilities.
6.2. Tilt Adjustment
- Loosen the tilt adjustment knobs on the TV brackets.
- Adjust the TV to the desired tilt angle (+5° up to -10° down).
- Tighten the tilt adjustment knobs to secure the TV in place.
6.3. Swivel Adjustment
- Gently pivot the TV left or right to achieve the desired viewing angle. The mount allows for up to 180° swivel, depending on TV size.

Image: Demonstration of the full motion swivel capability of the TV mount.
6.4. Post-Installation Leveling
- If minor leveling adjustments are needed after installation, the mount allows for ±3° rotation. Consult your specific model's mechanism for unlocking and re-locking this feature, often involving loosening screws on the TV brackets.

Image: Visual representation of the post-installation leveling feature.
7. Maintenance
Regular maintenance ensures the longevity and safe operation of your TV mount.
- Periodically check all screws and bolts to ensure they remain tight. Retighten if necessary.
- Clean the mount with a soft, dry cloth. Avoid abrasive cleaners or solvents.
- If the articulating arms become stiff, a small amount of silicone-based lubricant can be applied to the pivot points.
8. Troubleshooting
If you encounter issues, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| TV is not level after installation. | Minor misalignment during installation. | Utilize the post-installation leveling feature (±3° adjustment). Loosen the relevant screws, adjust, and retighten. |
| Mount arms are stiff to move. | New mount or lack of lubrication. | Apply a small amount of silicone-based lubricant to the pivot points. Movement should become smoother with use. |
| TV appears to be sagging or unstable. | Mounting bolts are loose, or weight capacity exceeded. | Immediately remove the TV. Check all wall and TV attachment bolts and retighten. Verify TV weight is within the 198 lbs limit. Ensure proper wall type installation. |
| Missing parts. | Packaging error. | Contact FORGING MOUNT customer service for replacement parts. |
9. Warranty and Customer Support
This FORGING MOUNT TV wall mount comes with a 5-year warranty.
Our dedicated customer support team is available to assist you with any questions regarding pre-purchase inquiries, installation, or product issues. Please do not hesitate to contact us for professional assistance.
For support, please refer to the contact information provided with your product packaging or visit the official FORGING MOUNT website.