Awwww, maaaaan....

[Kerry]

For O-ring locations, see my 3rd post in the thread where to buy float needles?.

The float height measurement is 14.6mm +/- 1.0mm and it's measured here:



EDIT: Changed link from sisna.com to bbburma.net

[TheMasterRat]

Kerry to the rescue, once again. Thanks for the diagrams. That picture makes it look like you just rest the carbs flat and measure...

What about the white plastic slider?  Do I have to take it out before spraying out the carbs?? ( Found the O-Ring spot btw. )

-edit-

Got the slider out with my good friend, BFH.

[jgary]

No stupid questions, only stupid people.  Here comes one now.  If you test the float heights, you're looking at how much gas is in the bowls.  If there's too much gas in the bowls, how do you know if it's because of the floats, or because the needle isn't sealing in the seat?  Can this test tell the difference?  Is it too late for me to be thinking about carbs?  Thanks.

John.

[yamahonkawazuki]

you can also lean it out by using (on your way to test) rubbing alcohol, n your gas

[TheMasterRat]

Well, carbs are back in one piece ( washer off the needle ).

Floats seemed within the range Kerry posted above... But I gotta say, I'm not feeling confident this is gunna fix it... Here's hoping.

Uhh, Kerry, I just saw in another thread that the measurement above is to be taken with the carbs upside-down... ( to where the floats hanging straight down? ) Can you confirm this please?

[Kerry]

If there's too much gas in the bowls, how do you know if it's because of the floats, or because the needle isn't sealing in the seat?

Hmmm.  How about this test?

1) Get a suitable length of see-through hose for performing the

Float Height Check.
2) Attach the hose as described, and hold the free end UP.
3) Set the petcock to the PRI setting.
4) Open up the drain screw on the carb and wait for the fuel level to settle in the hose.[/list:u]* If the fuel level settles anywhere close to the float bowl gasket then you're seeing the height of the fuel in the float bowls.

** If the fuel continues to rise (possibly VERY slowly) in the hose, then the float valve needle isn't seating properly.  The level should theoretically rise up to the level of the fuel in the tank, but it won't ever get that high because as the fuel rises and fills the carb bodies it will "turn the corner" and flow down into the airbox first.

EDIT: Changed link from sisna.com to bbburma.net

[jgary]

I'll buy that.  Thanks Kerry!

J.

[The Buddha]

Lean it out by creating a higher air flow.... by taking out the air filter... and removing the vacuum caps on the plastic tops. Just for the test. BTW I still dont see how the damn thing will ever clear emissions... they are playing some sorta game. Ask the other AZ guys if they had to test theirs.
Cool.
Srinath.

[Blueknyt]

rubbing alcohol, n your gas

NONONONONONONONONO


back in the 70's when most carbs were mecanical alcohol was not so bad to use, as was moth balls   (naptha) used to spike octane.  problem is, most carbs and some fuel injection systems use seals,diaphrams and what that cant handle alcohol, it warps and distorts them.   Carb cleaner has a certain amount of alcohol to it,  just try cleaning your slides with it and see if you ever get the tuning right again.