The settings for a Scotts Turf Builder Edge Guard can differ depending on your model. You may be able to adjust the settings with a knob on the back of the spreader and a switch on the back panel of the equipment.
According to scotts.com, the Edge Guard is available in the mini and DLX models. Some home improvement websites such as HomeGuides.sfgate.com offer some guidance on the use of an Edge Guard mini.
The knob on the back of the spreader allows you to set the application rate for the product you plan to spread. The Edge Guard is unique to this piece of equipment, allowing you to keep the edge to the right of the equipment, so that the spreader does not spread materials in the wrong place. This eliminates having to sweep the driveway or sidewalk after you are finished spreading.
There is a switch on the rear panel of the spreader that controls the guard. The switch allows you to engage or disengage the edge guard. When spreading material in an open yard area, you should disengage the edge guard to allow spreading on both sides of the equipment. It is not possible to adjust the row spacing on this piece of equipment.