SOHC.co.uk Forums > CB350/400

What's this hole / tube for?

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Nurse Julie:
Hi Ken.
Thanks for that. It is the correct part No. but it seems to not have the pinch drain on it anymore, maybe it's one of those things you don't really need.Why have a pinch drain when you can just let is come out with gravity instead
Regards
Julie

steven400/4:
i thought the one at the bottom of the airfilter box was the only one that had the pinch slit at the bottom the one on the air chamber was just a hole ??

tom400f:
That's the one Julie means, Steve

I bought 17335323000 from DSS - it has no pinch drain but since only the upper part was perished I used only that (or some such memory anyway). No idea why there is a "valve" in it at all. Perhaps to keep the crap out as there is likely no pressure or even some suction...

Nurse Julie:

--- Quote from: steven400/4 on January 02, 2015, 08:58:41 PM ---i thought the one at the bottom of the airfilter box was the only one that had the pinch slit at the bottom the one on the air chamber was just a hole ??

--- End quote ---
Hi Steven.
Yes, that's what I'm saying. On my bike the one with just the hole in the bottom that should be coming off the inlet manifold has been put on the bottom of the air filter box by someone in the past in error, there is no pipe at all attached to the bottom of the manifold. So all I need to do is swap the one with the hole over to the inlet manifold and obtain a new one with a pinch drain for the air filter box.
Regards
Julie

steven400/4:
ok i can look in my stash to see if i have an old one if you get stuck but not sure i there is any in the boxes

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