There is another article about Matt Roloff and the Dixie Chopper lawn mower. It explains the process of how Matt approached company for equipment to use on the show (aka. trade outs).
"Matt Roloff became acquainted with Dixie Chopper mowers because of his association with the local New Holland farm equipment dealer, who has provided machinery used at the Roloff farm. The Portland area dealer also handles Dixie Chopper mowers, and it was there that Roloff became infatuated with "The World's Fastest Lawn Mower." Matt wasted no time incorporating the mower into the operation of Roloff Farms, where it is being used constantly by the family and their staff.
How did this all come about?
"Actually, Matt Roloff himself called last April to say he was interested in getting a Dixie Chopper mower to use on the show," Dixie Chopper Communications and Public Relations Director Eric Bernsee explained. "Interestingly enough, as we were discussing the possibilities, he was walking into NBC studios in Hollywood to go on 'The Tonight Show' with Jay Leno and talk about the new season."
Agreeing to provide a mower was the easy part. Getting it to the far Northwest was another story..."
You can read the full article here: