The '09 Zuma 125 had the same fuel pump issue, which, as far as I know, has been fixed. I never knew exactly what the problem was. I do know that defective parts can be made in all countries, including the U.S. You will not likely find any Asian scooter, including Japanese, that is of superior quality to Kymco.
2002 Vulcan 750, 2001 XT225
2008 Vino 125, 2009 Genuine Stella
2012 Zuma 125, 1980 Puch Newport moped