well I would get a good used one if I felt like it but I don't an also its a little pin hole too not a big hole smaller then the pilot jet in carb as comparison
I've done quite a bit of plastic welding on sleds. Virtually all of the black plastic fuel tanks used on modern sleds are made of HDPE (High Density Poly Ethylene), so that is the the type of material you'll need to repair the hole.
You can try using a regular soldering iron to melt the PE, you'll just need to make sure you get both the pin hole area of the fuel tank melting as well as the new PE that you're bonding to it to fill the hole.
Some of the airless thermo plastic welders made specifically for the job look much like a glorified soldering iron, however unlike the typical inexpensive soldering iron, a unit made for plastic welding has the ability to adjust the temp of the welding tip for the various types of plastics. I have an airless plastic welder, and it works really well. I've used it to repair cracks in the urethane hood on my '99 ZX Summit, damaged plastic skis, punctured fuel tanks, and a bunch of other stuff...
Edited by MotoXR, 10 January 2017 - 09:50 PM.