It is neither difficult nor expensive to replace your old gas tank. Here is a fuel tank for small size 110cc TaoTao ATVs such as the ATA-110B and ATA-110D.
As well as the TaoTao models, this black plastic gas tank fits numerous Chinese ATVs or quads in the 50cc to 110cc range. In addition, this handy gas tank can be adapted to a wide variety of applications, garage and custom builds.