carberator vent hose

[j_berg]

have a 2008 rsv with 4500 miles I was removeing the lower left cowling and found some corosion or melting on the back side where the what i belive to be the carborater air vent hose is. some thing ran down the cowling and corodid it. it even melted of the two little tabs on the back any ideas what this was

[V7Goose]

Those hoses are the carburetor overflow hoses (if a float gets stuck). My 05 showed some paint bubbling from the same thing, and Yamaha replaced it without any argument. Not sure why gas would cause the plastic to melt, but then again, I never tested it. My argument to the shop was simple - if that was how Yamaha designed it, then nothing that could come out of that hose should damage the cowling.

Goose