Some of the new Visual aspects of the Inventor modeling engine include the ability to set a model reflection across a ground plane. Unfortunately, sometimes it doesn't match the way you modeling your part or assembly so we have to adjust it. Here we have a reflection image that is in the wrong position. We want it below this feeder assembly, not behind it.
To resolve this, start by going to the View Tab --> Appearance Panel and select the flyout for either the Reflection or the Ground Plane. In either of these flyouts you will find a Settings button.
You will notice one glaring omission from this "settings" box. The ability to reposition the Ground Plane used in Reflection! But you do get a hint about where to actually do it...sort of. It tells you that it is tied to the View Cube...but how?
Well, the Ground Plane will represent the bottom of the model, so if you were to change your Top setting on the View Cube it will readjust the ground plane automatically. To adjust this, simply orient the cube so that you are looking in a downward fashion to where you actually would be viewing your new Top of the model. Once you have your model tilted, rotated, or otherwise in the postion of your new Top, simply right click anywhere on the cube and select to "Set Current View As" and select Top.
This will change the orientation of the cube all around to match what you really want now and your Ground Plane and Reflection will be correct too!