Costco is recalling two models of Champion portable generators that were sold between December 2011 and July 2012.

Approximately 8,600 units are being recalled.

There have been 11 reports of fuel leaking from the generators, including eight reports of the generators catching fire and two reports of property damage, according to the U.S. Consumer Product Safety Commission.

Both models have a black frame with black and yellow control panels, a bar handle and two wheels.

The generators can be returned to Costco for a full refund.

For more information, see the recall notice on the U.S. Consumer Product Safety Commission website.