Hole in front of gy6 crankcase cover?

[msiger919]

Originally Posted by Acellio

What is it for? It looks like an air hose was once connected to it and the original owner deleted it. Can/should I block the hole off?

http://www.scootdawg.net/attachment....1&d=1520916627

I found it is for cooling the clutch. On some models a hose is attached going to a scoop in the scooter fairing. Others, like yours, may just have a screen to keep debris out. There should be a vent on the underside of the case near the middle.