Hey, I just picked up a xtreme tantrum 50cc. I got it for 50 bucks on CL. It still has the nubbies on the tires. It was locked up but I pulled the jug and it was not the cylinder or piston, it appears that someone ran it in some water and it rusted the main, rod other bearings. It still moves but you can feel it like they were run with water and have some flat spots. My question is this: Where can I get a new motor or is it possible to rebuild this one? The head says Senchen on it and 3YJ00 on it. Is it worth working on? Not much on the web that does not send you on wild goose chases. What do you think? Thanks

 

One more thing, since there is so little information out there, does anybody know of anyplace I can compare engines to figure out what the engine is? It is 49cc, two stroke with the plug coming straight out of the top of the head.

 

My son has a 90cc and he had almost the same thing happen. I ordered the crank bearings and they also sell the top end for the 90cc I am sure the 50 will work as well. Look at this website and call them for info.

Skyhawk 50 Quad - Kasea, SMC, Blast, Ram, Trail Blazer, and Barossa ATV Parts - A&J Parts

 

In case you haven't found the bearings you might want to look on Ebay. I think there are some complete engines there for cheap.