Introduction
If your Logitech M325 mouse scroll wheel is unresponsive, damaged, or behaving unpredictably, this guide will help to replace your scroll wheel. The scroll wheel is a part of the mouse which allows the user to scroll through windows, navigate backwards, navigate forwards and use the middle click button. If one of these functions do not work, your scroll wheel is most likely damaged.
Tools
Parts
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Slide the lower case downwards and separate the top case from the main mouse body by lifting it off.
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Use a pry tool to unclip the scroll wheel from the PCB by pushing the clip out of the holder.
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Remove the scroll wheel by lifting it up.
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Conclusion
To reassemble your device, follow steps 1-4 in reverse order.