Hose ID Help

[SFBullnose]

Looks like something a PO improvised. Definitely not stock. The hose should just slip onto the large port on the back of the air cleaner. Is the other end of that hose connected to the reed valve? (The valve looks a bit like a top hat.)

Thanks for heads up. Yes, it does run to the reed valve. So, I'll just put it back on the nipple on the back of cleaner. I wonder why the hose adapter was used?

Appreciate it!