A French couple who left a restaurant in WA's South-West without paying a $230 bill have come forward after a social media appeal.

On Thursday afternoon the pair returned to Mojo's Restaurant in the city of Bunbury, 175 kilometres south of Perth, to pay for a four-course meal and alcohol they had four days ago.

They had pretended to go out for a cigarette break and left the restaurant without paying.

A post on the Mojo's Restaurant Facebook page appealing for them to return and pay went viral, and security camera stills of the blonde woman and tattooed man were subsequently televised across the country.

The couple had been working at a farm in nearby Manjimup on a working holiday visa.

On Thursday their employer contacted Mojo's after recognising them from the still image.

The employer told the restaurant he had sacked them and told the pair to rectify the situation.

"They were a little bit coy when they were in the restaurant so I think they probably realised how much it's exploded," Mojo's manager Jake Atkinson said.

"But they're out here on holidays and it was just a silly mistake on their behalf."

Restaurant will not press charges

A CCTV image of the couple was spread on social media through the Mojo's Restaurant Facebook page. ( Supplied: Mojo's )

The restaurant has decided not to press charges, instead focusing on the positive community experience that has resulted from the incident.

"They had the gumption to come in, apologise to the bosses, square up the bill, and be on their way, so we were happy to leave it at that," Mr Atkinson said.

"It's been a really humbling experience, receiving so much support from the wider community ... I'm astonished really."

A recent post on the Mojo's Facebook page reads: "We are very proud to be part of such a great chase around Australia which ultimately lead to ... we the small business owner getting a small win all because of everyone's support."