I BOUGHT THIS BIKE FOR MY SON AND IT THE FIRST BIKE WE HAVE BOUGHT. PUT EVERYTHING TOGETHER AND HE TOOK HIS FIRST RIDE YESTERDAY AND AFTER 3 MIN. IT STARTED TO SPIT OIL OUT OF A HOSE UNDERNETH THE SEAT COMING FROM THE MOTOR AND WHAT LOOKS LIKE ON THE HOSE IS LIKE A LIL BOTTLE ON TOP OF IT WITH A HOLE IN THE MIDDLE WHERE THE OIL IS COMING OUT ,,, MY ? IS DID I FORGET TO DO SOMETHING DO YOU ATACH THE HOSE TO SOMETHING HELP PLEASE

 

I've been looking online trying to find an engine schematic or a picture of the little bottle thing. I can't find anything on it. My best guess without seeing one would be that it's where the crankcase pressure expands and contracts. I'm sorry I can't help, but I'm trying. Best of luck.

Frank