On the flange where the arm mount fastens to the plinth, If you look closely, on the right side of the flange you will notice a small allen-head set screw. 90 degrees counter-clockwise from that set screw, or on the back side of the flange/plinth, there will be a second set screw. When these two are loosened, you can turn the thumb wheel to raise or lower the arm height. Hopefully, you have the tools supplied with the table, but if not, the appropriate size can be found in most allen wrench sets sold at Sears, Home Depot, etc.
If you are a virgin at this, just try setting the arm parallel to the plinth/platter at first, (with the cartridge in the record groove, a throw away lp is best). Then just go from there, optimal VTA varies from cartridge to cartrdge.
Hope this helps, by the way it's best not to mess with the large set screw on the top of the pivot point on the top of the arm.
Best of luck,
Dan
