Little hose on top of carb?????

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Posts: 3
Joined: Fri Feb 11, 2011 12:44 pm
Location: Kingston Ontario Canada

Little hose on top of carb?????

Post by Yamagirl » Thu Feb 24, 2011 11:51 am

I am working on a 88 sno-scoot and there is a little black hose on top of it's carb. The hose is on a nipple that is open to the motor side of the carb. This is very strange to me because this hose and nipple is not on any parts lists or diagrams. It si also wierd because it runs much better when it is plugged but it was never plugged before. Somewhere I read that it was a vent :? vent for what? I also reduces the effects of the mixture adjustments. What in the world is this and why is it not shown on any diagrams.

Posts: 12
Joined: Wed Mar 02, 2011 9:06 am

Re: Little hose on top of carb?????

Post by Fleabagz » Wed Mar 02, 2011 12:36 pm

You are right, it is definitely not shown anywhere.
However, I just purchased a new carb from Yamaha and it comes with it already installed. Sorry, I can't tell you exactly what it's purpose is - some kind of breather. I never messed with it since it runs so well.

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