THOR MOTOR COACH IS RECALLING CERTAIN MODEL YEAR 2007-2010 DAMON CHALLENGER, MODEL YEAR 2008-2009 CHALLENGER PLATINUM, MODEL YEAR 2007-2011 DAYBREAK, MODEL YEAR 2010 DAYBREAK CLASSIC, MODEL YEAR 2009-2010 DAYBREAK SPORT, MODEL YEAR 2007-2009, OUTLAW AND MODEL YEAR 2011 FOUR WINDS HURRICANE, RECREATIONAL VEHICLES MANUFACTURED FROM MARCH 2007, THROUGH AUGUST 2008. THE FUEL-FILL CAP ASSEMBLIES USED TO SEAL THE UNUSED SIDE OF THE DUAL-FILL GASOLINE FUEL TANK WERE PRODUCED WITH A HOSE MATERIAL THAT DID NOT MEET DESIGN SPECIFICATIONS. DURING NORMAL USAGE THE HOSE MATERIAL MAY DETERIORATE WHICH MAY RESULT IN FUEL LEAKS.