a couple carb questions

[motoman]

Was just checking out a few youtube videos. One specifically said to use position #2 to measure the float heights, but I'm gonna believe you Brant!
For the definitive answer, does our XS group of experts all use position #1?

Carbs inverted, highest point of float for measurement. Key is ALL be set identically the same with same method.
If using OEM float needles, setting floats identically the same will have running fuel levels really close to the same.
If using K&L or other aftermarket float needles, chances are pretty good running fuel levels will vary between all four carbs. The springs in the K&L float needles seem to have varying tensions, and I had one that compressed farther than the rest causing fuel to weep a wet place around bowl when bike was initially shut off.(maybe that's why five needles come in their packaging).
Consequently, I've had many carb removal/installs from poor quality control of float needle construction.

[DeanR]

#1 Dean.

Was just checking out a few youtube videos. One specifically said to use position #2 to measure the float heights, but I'm gonna believe you Brant!
For the definitive answer, does our XS group of experts all use position #1?

[DeanR]

#1 Dean.

Thank you sir...guess I'm good to go after all.

[motoman]

#1 Dean.

[DeanR]

Have read through a bunch of carb threads. All say to measure to the highest point of the float, with the carb upside down. But just where is that? Found this picture.


Most discussion seems to involve the carb base and whether to measure with or without the gasket, but little if any mention of exactly where on the float to measure to.
My # 1 measurement is very close to 23 mm
My # 2 measurement is very close to 21 mm
Which one to use?
I know that 23 mm is the proper setting to use on the SG carb.

[MPittma100]

Float Adjustment

Suppose I should do a search for the step by step of float adjustment, once again never having done it. Factory manual doesn't have much to say about it. Why would it be necessary if the floats were not removed?

Looking forward to that camp spot Brant. Sure hope it works out.

You do not know if they are adjusted properly unless you check them. If they are adjusted incorrectly, the bike can run lean or rich. With carbs off and apart there is no good reason NOT to check them. Search the forum and you will find adjustment procedures/details to set them correctly for your year/model. Both floats for each carb need to be the same.

[Bonz]

For diaphragm pin holes get some liquid electrical tape. CZ introduced me to this with the 80G I fixed up.

I sold the bike, but in think he has bikes that have been on the road a good while with that fix.

[DeanR]

Suppose I should do a search for the step by step of float adjustment, once again never having done it. Factory manual doesn't have much to say about it. Why would it be necessary if the floats were not removed?

Looking forward to that camp spot Brant. Sure hope it works out.

[MPittma100]

Carburetors

You should ALWAYS check/adjust the float levels. It is a very good idea to hook up a fuel source to the carburetors BEFORE you reinstall them. Check for leaks now rather than after they are back on the bike. Tilt them to simulate the bike being on the side stand.

Sure hope I'm not the only dummy that can tend to put the carb covers back on...forgetting to put the big spring back in!


Any lubrication to be done, such as choke or throttle linkages?

I didn't check/adjust float levels. Again because it runs well so I just put everything back as it was, just a little cleaner inside and outside.

[motoman]

Would a tiny spot of Yamabond or RTV be ok on a single tiny pinhole in a diaphragm? (on my spare carbs)
Neverending questions!

it'll work.......until you use the carbs. Plasti-dip WILL also come loose....DAHIK.
I did find one thing that works though....kinda pricey just for this use though.
Automotive paint stores sell the professional fix for composite bumper repair, ect.(would even work for damaged fairing lowers with fractures).
It's two part(one time use applicator is mixing chamber) product comes out a tube(s) similar to a two part exoxy syringe, thru mixing chamber, to application......you got 30sec. for 'set' time! As strong as or stronger than base material.
I kinda 'waisted' one of the applicator/mixing chambers to test if it would work, as I only needed tiny 'dobs' in the eight wear locations of the diaphrams.
Seems to have worked perfectly as I've had carbs apart since more than I would like to admit. Seems to also have given those points a wearing surface, so looks like it will last the duration of my riding yrs. I did this 'fix' 4-5yrs. ago.

Remove the metering rod and bring slide(s) with you, and I'll fix them for ya'....... also,still holding your camp spot.

[DeanR]

Would a tiny spot of Yamabond or RTV be ok on a single tiny pinhole in a diaphragm? (on my spare carbs)
Neverending questions!

[motoman]

Sure hope I'm not the only dummy that can tend to put the carb covers back on...forgetting to put the big spring back in!

Any lubrication to be done, such as choke or throttle linkages?

I didn't check/adjust float levels. Again because it runs well so I just put everything back as it was, just a little cleaner inside and outside.

A couple drops of lite oil on the enricher shaft locations where it slides thru casting.......keeps from bending/breaking the engagement arm.

[DeanR]

Sure hope I'm not the only dummy that can tend to put the carb covers back on...forgetting to put the big spring back in!

Any lubrication to be done, such as choke or throttle linkages?

I didn't check/adjust float levels. Again because it runs well so I just put everything back as it was, just a little cleaner inside and outside.

[bikerphil]

that stand-off loop on #4, on correctly?

I would flip it around with the sharp end pointing inward, just seems to make sense. Carbs look good BTW.

[BA80]

You got the throttle cable mount on there right. As far as that wire loop for the clutch cable, mine has been gone since I replaced the engine. But, yep, that's where it goes.