Yan Price, 31, of Scholes Park Road, was found guilty of indecent exposure after he taunted his neighbours as part of a long-running feud.
In the latest incident, described at York Crown Court, Price appeared naked in front of his next door neighbour in July last year. The upholstery manager maintained he had been mowing with a towel around his waist and that it had fallen down, but the jury did not believe him.
Judge Peter Benson ordered that he pay a £500 fine and £400 towards prosecution costs and told him to keep his clothes on outside his home for the next 12 months.
North Yorkshire Police officers Tracy and Paul Rogers and a female neighbour, who cannot be named, were said to have experienced problems with Price since he moved in with a long-term partner in May, 2004.
The court was told that last June Price was visited by police for sunbathing naked in his back garden following complaints.
But Price, already the subject of an anti-social behaviour order for threatening the Rogers' children, stripped off to mow his lawn.
Howard Shaw, prosecuting, said a female neighbour heard Price start the lawnmower and looked out to see Price wearing a pair of shorts. Later she saw Price using the mower naked and bending down repeatedly. She said: "It was as if he was testing us."
Price was acquitted of breaching his previous Asbo, imposed by Scarborough magistrates in 2004, which banned him from making contact with Mr and Mrs Rogers directly or indirectly.
After being told that he was the only person in the country with an Asbo banning him from public nudity, Price said: "I'm very comfortable with my own body and often walk around naked, I don't see a problem with that. I do not intend to cause offence, I do it for me."