The front a rear Cutting Edges on the Box Scraper can be used on their own to scrape a shallow depth of ground or can be used to collect and smooth material loosened by the Ripper Teeth/Scarifers.
Adjusting the components of a tractor’s Three Point Hitch dictates how a Box Scraper will engage with the ground. Knowing and understanding the effect of these adjustments can greatly improve the results you are able to achieve with the Box Scraper. We have assembled a series of articles which contain video footage of the more common Three Point Hitch adjustments made to a Box Scraper.
The most obvious effect that the lift arms have on the operation of the Box Scraper is to control the depth of engagement. They also serve to control the right to left tilt of the Box Scraper which allows for digging ditches in roads, creating contours in the landscape, etc.
Tractor Videos 
The front a rear Cutting Edges on the Box Scraper can be used on their own to scrape a shallow depth of ground or can be used to collect and smooth material loosened by the Ripper Teeth/Scarifers.