Join Date: Nov 2009
Location: Lander, Wyoming
That tube, is the 'Drain Tube' from the CLEAN AIR side of the air filter.
Drain IT, clean it if you wish. But put it back ON!
You do not want to be sucking ANY dust / dirt into your motor!
I will suggest, that you give year reference in future postings.
And I WOULD SHORTEN that tube, right up to the TIE Strap, do NOT forget to plug IT.
In fact, check to SEE that it IS still plugged, from time to time.
Modify at "YOUR OWN RISK"!
Still riding my 1987 KL650-A1. 85,000+ miles & counting