I have a small crack on the plastic gas tank of a KDX, can it be repaired or is it a goner? The crack is about an 1.5 inches and comes from the threads where the petcock attaches.
can't say for sure without pics but products like por-13 (believe that is the name but most tank liners are good) work wonders. I'm a pretty rough welder and my lined tank has never leaked.
take it to a body shop. ask me how i know. a buddy left his bike at my house yfz450. it fell over onto the bike stand and punctured the tank.
i got it fixed at a local body shop (plastic welded) but he didnt like how it looked (in plain sight) so i had to buy him a new one. lUckily my buddy was the yamaha rep and i got it for cost at $175 ouch
Check out IMS for a larger tank if you want one. I had one on my KX500 and liked it. It was a bit wider than the factory tank which took some getting used to but I ended up really liking it.
Mine was in Kawi Green. Clarke also makes larger tanks for them. I had a KDX220 as well but didn't buy the larger tank for it. The KX500 kinda needed it for woods riding.