It's never as simple as just a gas line and be able to trust it to get you back off the lake! Been there done that 2hrs later....
It is probally made by Scorpion (originally Trail-a-sled) but there was another company that also called on of their models Stinger (can't remember the name). Both companies are out of business and their sleds are hard to find parts for and can get pricey fast.
If its a Scorpion it should have a red metal flake or black with red stripped hood and a tag on back right side of the tunnel with either Scorpion or Trail-a-sled on it.
There is a website with info, pictures, and links to possibly find parts it's called SCORPION TRAILS. Here's the link
http://www.trailasled.com/index.php Great little sleds I still use mine and always looking for another!