Reply To: [How to Tutorial] Change Vacuum Lines on Hyosung GT125R GT250R & GT Comet (Air Hose Diagram) Apr 8, 2021 at 12:51 PM #5687 fadlan👤 Member Topics: 0Replies: 1 hi, so my bike got 1 rear intake hole, 1 front intake hole with rear pump and vacuum fuel tap. how can i apply this method? would appreciate much if could help me.