Logitech MBJ58 Mouse Resistance Spring Replacement

Hold the mouse so that the bottom is facing up.

Remove the single Phillips #1 screw from the bottom half of the mouse.

Place the mouse so that the bottom is resting against a hard surface.

Lift the top cover of the mouse gently, and remove it.

Locate the scroll wheel on the mouse.

Grab the scroll wheel with your thumb and index finger.

Gently lift up, to remove the scroll wheel from the mouse.

Locate the spring on the scroll wheel, and carefully remove the spring.

Place the replacement spring on the correct side of the wheel (shown in the images) with the prongs pointing down.

Use the images to locate where the resistance spring is.

Grab the scroll wheel and its mount and gently pull them apart.

Grasp the top of the resistance spring and pull it towards yourself, letting the hook slide out of its hole.

Insert the hooked section of the replacement spring into the corresponding hole on the mount.