Help with 2007 carbs

[weedahoe]

Trust me, theyre worth it. I love mine. I let a lot of things soak in it before I clean them. You can setup your own filtration system on them also so you dont have to change the fluids as much.

[pardegt]

you are missing the air fuel screws..If they have never been messed with then they will probably have a stupid little metal cap on them..It totally disguises them altogether. back them out all they way(use pressure as to not strip them!) out and clean the passageway underneath until you can spray carb cleaner into it and watch it go through the other side..then, after you put the screws back in and brin them to a light seat, back them out 2.5 turns...i always find it easier to count half turns...In that circumstance, it would be 5 half turns..

i acquired my 06 gs500f and the same problem was occuring..i opened the carbs up to find that everything was spotless but the air/fuel screws had been skipped/not noticed. 

I would bet my money that you've looked over these..

Ok, I give up...where are the air/fuel screws?  Keep in mind, this is an 07.  Thanks.

[ggg]

Another common source of carb malfunction is the O-rings on the vacuum outlets on top of the carbs. How do they look on your bike?

[Suzuki Stevo]

Ok, I give up...where are the air/fuel screws?  Keep in mind, this is an 07.  Thanks.

Under the brass plug that you need to drill out. ('07 carbs in photo)

[pardegt]

Thanks for the replies and the pic and instructions as I did locate them but then was unsure how to remove the brass plug.

ggg...If you are referring to the little o-rings talked about so much next to the diaphragms, my bike does not have these.  I believe those were on older models as the hole above this area is blind and the metal in the area is completely new, never showing signs that any o-ring has ever been there.

Also, I have 2 brass plugs per carb.  The smaller dia one is in the protruding part of the case (air/fuel), the other larger dia one sits in the bottom of the fuel bowl just behind the air/fuel one.  What is this one for?

[Suzuki Stevo]

Also, I have 2 brass plugs per carb.  The smaller dia one is in the protruding part of the case (air/fuel), the other larger dia one sits in the bottom of the fuel bowl just behind the air/fuel one.  What is this one for?

Often plugs are used after a port or passage of some sort is needed in the manufacture of the carb body, once the port/passage is drilled then they plug the hole, die casting can't do everything needed in the process of making the carb body.

[Saiman619]

I have an 08 and the screw is in the same location as the diagram. They were two brass plugs they had a tiny hole in the center if I remember correctly. Just added info, but I had a similar problem that I thought was the carbs but after I adjusted the valves clearance it runs great. My bike would backfire a bit when cold. The exhaust shims were too tight to spin in the bucket. Took three carb cleanings before I checked the valves.

[pardegt]

Well, further teardown revealed the air/fuel screws to be fine, however, one of the needle valves on the float was all gunked up.  Ended up getting a new needle valve as I messed up the original trying to get it out.

I got the bike to run but still have a few issues:

- Need a new gasket for one of the float bowls as it leaks badly

- gas built up in the air box and was coming out the vent hose which leads me to...

- what connects to the center rubber tee coming off the carbs (top is filter, bottom is fuel, center = ?)

[Saiman619]

The hose coming from the tee of the carbs is just a vent.  It runs to the left above the airbox.