Anyone knows what is he doing?

[silversurfer]

hi, someone please tell me what is he doing?

http://gallery.darladog.com/v/motorcycles/gsf400/floatbowls/

Seems like getting water out?

[bdouvill]

Hi,

Seems to be the drain screw of your carb tank. It allows you to do the following:
- test if the fuel comes to each of your carbs since there is no fuel pump on B400
- remove all the fuel from the carbs if you want to store your motorcycle for a while (obviously, no one does that...)
- remove crap for your carbs

As I am not a master in English technical terms, or if I am completely out of scope, please correct me.

Regards.

[pmackie]

I agree...he is using the drain screws on the bottom of the carb float bowls to drain the carbs into a glass jar.

You can clearly see that he has picked up some water. As water is heavier (higher density) than gasoline, it will separate and sink.

In addition to seeing the water, you can also perform a "Clear & Bright" test this way. Good, clean fuel should be basically transparent, allowing you to see through it. Colour is OK. Most Gasolines are naturally slightly straw brownish, but oftern have a slight amount of dye added, but should still look clean and clear, with no noticable water, sediment, cloudyness, etc. and when held up to sunlight, should have a slight "sparkle" or "brightness", ie: "Clear & Bright".

In addition to the water, this fuel also look cloudy. If it were my bike, I would be draining and cleaning the tank and petcock as well.

[silversurfer]

Thanks for all replies!