1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your new replacement scroll wheel for Logitech G102, G304, and G305 gaming mice. This high-quality replacement part is designed to restore or upgrade the scrolling functionality of your compatible mouse.
2. Product Overview
The OOTDTY Gaming Mouse Scroll Wheel is a durable and wear-resistant replacement component. It is available in multiple colors to match or customize your mouse. Designed for easy removal and replacement, it ensures a smooth and responsive scrolling experience.

Figure 1: Various color options for the replacement scroll wheel (Purple, Black, Blue, Green, Gray).

Figure 2: Top view showcasing the textured grip of the scroll wheels.
3. Specifications
| Feature | Detail |
|---|---|
| Material | Plastic |
| Compatibility | Logitech G102, G304, G305 Gaming Mice |
| Available Colors | Black, Blue, Gray, Green, Purple |
| Package Weight | Approximately 0.026 kg |
| Package Dimensions | 10 cm x 10 cm x 10 cm |
| Brand Name | OOTDTY |
| Origin | Mainland China |
4. Setup and Installation
Replacing a mouse scroll wheel requires careful handling of small components. If you are not comfortable with disassembling electronic devices, please seek professional assistance.
4.1 Tools Required (Not Included)
- Small Phillips head screwdriver
- Plastic pry tool or guitar pick (to open mouse casing)
- Tweezers (optional, for handling small parts)
4.2 Installation Steps
- Power Off and Disconnect: Ensure your Logitech G102, G304, or G305 mouse is powered off and disconnected from your computer. Remove any batteries if applicable.
- Locate Screws: Carefully remove the mouse feet/skates to expose the screws underneath. These are typically adhesive and can be gently peeled off. Keep them safe for reapplication.
- Open Mouse Casing: Unscrew all visible screws. Use a plastic pry tool to carefully separate the top and bottom halves of the mouse casing. Be gentle to avoid breaking plastic clips or internal cables.
- Locate and Remove Old Scroll Wheel: Identify the existing scroll wheel assembly. Note how it is seated and connected. Gently lift or slide out the old scroll wheel.
- Install New Scroll Wheel: Carefully place the new OOTDTY scroll wheel into the designated slot. Ensure it is properly aligned with the encoder and any other mounting points.
- Reassemble Mouse: Carefully close the mouse casing, ensuring all internal components are correctly seated and no cables are pinched. Reinsert and tighten the screws.
- Reapply Mouse Feet: Reapply the mouse feet/skates to cover the screw holes.
- Test Functionality: Connect your mouse to your computer and test the scroll wheel for smooth scrolling and click functionality.

Figure 3: Close-up of the scroll wheel, highlighting the central axle for installation.

Figure 4: Side profile of the scroll wheel, showing its textured surface.
5. Operating Instructions
Once correctly installed, the replacement scroll wheel will function identically to the original. It provides tactile feedback for precise scrolling and a clickable function for additional commands, depending on your mouse's software configuration.
- Scrolling: Rotate the wheel up or down to scroll through documents or web pages.
- Middle Click: Press down on the scroll wheel to activate the middle-click function, often used for opening links in new tabs or auto-scrolling.
6. Maintenance
To ensure the longevity and optimal performance of your scroll wheel:
- Keep Clean: Periodically clean the area around the scroll wheel to prevent dust and debris from accumulating, which can affect scrolling smoothness. Use a soft brush or compressed air.
- Avoid Excessive Force: Do not apply excessive force when scrolling or clicking, as this can damage the internal mechanism.
- Handle with Care: When disassembling or reassembling your mouse for any reason, handle the scroll wheel and its components carefully.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Scroll wheel not scrolling smoothly or skipping steps. | Debris accumulation, improper seating, worn encoder. | Clean around the wheel with compressed air. Re-open mouse and ensure wheel is correctly seated in the encoder. |
| Scroll wheel not clicking. | Improper installation, damaged click mechanism. | Re-open mouse and verify the scroll wheel's click mechanism aligns with the micro switch. Ensure no parts are obstructing the click. |
| Scroll wheel feels loose or wobbly. | Incorrect seating, manufacturing defect. | Ensure the wheel is firmly seated on its axle and within the mouse casing. If the issue persists, contact support. |
8. User Tips
- Watch a Video Guide: Before attempting installation, search for video tutorials specific to disassembling your Logitech G102, G304, or G305 mouse. Visual guides can be very helpful.
- Organize Screws: Keep track of all screws and small parts during disassembly to ensure proper reassembly.
- Test Before Closing: After installing the new scroll wheel but before fully closing and screwing the mouse back together, temporarily connect it to your computer to test its functionality. This saves time if adjustments are needed.
9. Warranty and Support
For any issues or questions regarding your OOTDTY replacement scroll wheel, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase for any warranty claims.





