Where can I get a replacement petrol tank for my Champion strimmer?

Hi,

I got given a pretty basic 2-stroke petrol strimmer (the make is Champion). I now have a hole in the plastic petrol tank, no idea how it got there, I can't find anywhere on the web that I can get a replacement part for it.

The only model number I can find on it is CPT220.

Does anyone know where you can get parts for these strimmers?

Thanks in advance