6m6 mystery line

[3wheelerdude]

On a 650 Yami, there is a smaller line right by the number 8 head bolt/nut. What is that for?
I noticed that mine was plugged by previous owner.

[tor*p*do]

this is for a small waterline that goes to the stock exhaust
if you have an a/m exhaust, it is typically blocked off

[3wheelerdude]

Perfect, I will leave it blocked then.