Carb float lvl question

I have a 83 seca xj750 I'm having trouble figuring out the measurement on the little square metal piece on the float

 

The float tang? Not sure if you've seen this yet or not, but...

Setting the fuel levels

The whole thing with measuring the fuel level in the bowl... that's important for the purpose of measuring the gap between the fuel and the edge of the carb body. THAT is what we're more concerned with. More fuel in the bowl, the gap shrinks. Less fuel in the bowl, the gap grows.

Look over the file and let us know if you have any more questions. That's what we're here for.

 

Thank you man this helps a lot I need more gas in the float I got the bike running but it died out fast felt like I need more gas and I checked with clear tube and it's low

 

Then you bend the tang down just a hair. A very tiny hair. Fractions of a millimeter count.

Like the file says... likely the best method is to get one carb dialed in, measure the floats (preferably with one of the gauges pictured), set the other three floats to match, and measure all four. Tweak as required.

 

If I put the tang down wouldn't that mean less gas

 

No. Read the file again -- look at page 6. If you bend the tang down, away from the carb body, that increases the gap between the needle tip and the float seat. More gas has to enter the bowl to raise the needle far enough to stop the flow of fuel into the bowl.

 

Ok I got it haha is there a page for the throttle butterflys on how to set them

 

You're wanting to do a bench sync? I don't think that's been covered in any of the writeups. It has, however, been mentioned ad infinitum in the forums.

You can use a couple of methods to get the butterflies set. First is a thin strip of heavy paper (say, from a business card) and use that as a feeler gauge. Use the set screws between the carbs to adjust so that the butterfly plate barely tugs on the strip when you pull it out. The second method is to forego the feeler gauge method in favor of using the two teensy-weensy holes in the top of the throat as a marker. Do the outer pairs first (1/2, 3/4) then the center screw to align the two pairs.

Just how far apart did you take these carbs apart, anyway?

 

The DYI-How To Instructions section of this forum contains six pages of wonderfully useful articles; yet people seem to never look there.

http://www.xjbikes.com/forums/index.php?threads/how-to-bench-synch-your-carbs.6366/

 

Well, then, maybe we should make a .pdf out of it and stick it on Chacal's site.

 

Thank you guys this helps a lot I'll tell you my resaults tomarrow

 

Ok I did the bench sync and float bowl now idk how the adjust the idle screw The bike wants to start but wont

 

Just wondering with the idle screws how many turn out can I start with

 

If you are referring to the idle mixture screws then you can start at 2 to 2.5 turns out.

 

I have but no start idk wat to do

 

Have you checked to be sure that the float bowls are filling with fuel (petcock on prime to start with dry bowls).

 

I'll check tomarrow to dark haha but that will be the first thing to do

 

Valve clearances in spec?