Hello everyone. Im having a small issue. My stepfather got ahold of my three wheeler. Broke the chain and the drive sprocket. Dont ask. Hes just that good. So right now Im looking for a part name to order a new one. I can find the sprocket but the retainer to hold it on I cant find. Does anyone know what to call the part that holds the drive sprocket on the engine with three bolts? Im feeling kinda dumb. Also I just took a look at the top of the engine and I dont think its getting any oil. There is slight blueing on the cam and its bone dry up top even after running the engine. Its a 185s engine no mods. I can see how the oil gets to it but I cant see any oil in the engine. Looked at the manual and it comes in the back end of the cam but still no oil. Any suggestions on how to fix this? or suggestions? Ideas?