Can you post some pics of the hoses? The carby will have a drain hose and a breather hose. The crankcase ventilation hose goes into the airbox, any oil buildup in the airbox is drained through a drain hose, this hose is capped to prevent dirt getting sucked into the engine, (this is on the clean side of the air filter. If you have a lead acid battery there should be a breather/overflow hose from that as well. Hope this helps.