Topic: Carb cleaning

[Rsnip988]

I wish to break down my first set of carbs and clean them as the bikes been sitting for years.   I have read from many many posts that the Yamaha carb cleaner is the stuff to use so i'll run out and get some today... I had a question as to whether putting the parts in a sonicator (machine that vibrates the liquid inside resivoir with sound waves) filled with the carb cleaner would help the cleaning the hard to reach jets?

PLease let me know as i can bring the parts into work (Chemistry Lab) and ust the sonicator here since we dont use them too often.

Thanks in advance

RKS

[enforcer]

Check out this website if you haven't yet.  It is great for a first timer.  It is listed under the FAQ on carbs.


http://www.salocal.com/sohc/tech/carb/carb.htm

[cmorgan47]

i'd pull all the jets out, then run them through the sonic cleaner.  used to work for a jeweler and they used something similar to clean the gunk out of jewelry.... should do a good job of getting the crap out of the little holes.

suppose if the cleaner's large enough you could throw the bodies in too, but i'd pull all the jets out first.
also, i think you're supposed to boil the yamaha stuff so you probably wont be able to use that in the sonic cleaner....maybe regular carb dip though.

[Rsnip988]

Hmmm I cant seem to get the stupid rack off of the intake and throttle cable, i unscrewed the clamps but it wont let go

[cmorgan47]

Hmmm I cant seem to get the stupid rack off of the intake and throttle cable, i unscrewed the clamps but it wont let go

huh?


i think it's easier to pop them off the intake, then get the cables off....gives you a little more room to work with.  if you're saying that the manifold boots are holding too tight, that's pretty common.  the last set i did, a buddy and i sat on either sides and just yanked on them for a while....eventually they popped off.  maybe try a rubber mallet to get them going.

[flatblack]

The most popular and complete kits come from Keyster.  Here's a good source:

http://www.siriusconinc.com

I just checked: Of course, they're sold out of the "economy" kits for your bike but they do have the full kit, p/n KH-0983N, in stock at $23 each. The full kit includes all jets, o-rings and bowl gasket for one carb while the economy kit includes only four bowl gaskets and four float valves.

From your symptoms, you need all the o-rings and the bowl gaskets. You also need a length of hose to replace the fuel transfer tubes but can get by without a jet kit.

For a how-to, see this link:

http://www.sohc4.us/forums/index.php?topic=5410.0

To do this right, you'll need:

1. A clean, flat, well-lit workspace for a few days.

2. A gallon can of carb dip (local auto parts store).

3. Several cans of spray carb cleaner (Berkebile 2+2 seems to be the best I've used...).

4. Plenty of patience and the ability to do close-up work with small parts.

None of this is difficult, nor does it require special knowledge. Just take your time and think of all the money you're saving. Pay special attention to the material found in the "how-to" link, above, and ask copious questions here whenever you feel the need.

HTH...

fb

[Bob Wessner]

I hate to sound like a broken record, but the hard parts of the carbs rarely wear out. Unless you know that yours are shot for some reason (either true wear or corrosion, etc.) consider just cleaning and replacing the soft stuff. If you do go ahead with Keyster kits, pay close attention to the float valve and spring (I found the spring to be very stiff, unlike the stock), as well as the main needle taper. I found these to be off quite a bit, more slender toward the tip (i.e., richer). As a result, I just used the stock parts after cleaning. You can compare the needle tapers using a drill bit guide.

[Rsnip988]

No I got it off of the intake boots, i  cant get the stupid throttle cables off the carb rack to work on it, all of the screws/bolts are/were rusted in place now half of them are stripped due to dumb old me,  Any Impus at all on how to get them off without just snipping the throttle cables completely?

[flatblack]

I hate to sound like a broken record, but the hard parts of the carbs rarely wear out. Unless you know that yours are shot for some reason (either true wear or corrosion, etc.) consider just cleaning and replacing the soft stuff. If you do go ahead with Keyster kits, pay close attention to the float valve and spring (I found the spring to be very stiff, unlike the stock), as well as the main needle taper. I found these to be off quite a bit, more slender toward the tip (i.e., richer). As a result, I just used the stock parts after cleaning. You can compare the needle tapers using a drill bit guide.

What he said. It's highly likely that your hard parts are fine and just need to be cleaned. Replacing the rubber parts will probably fix your leak. I should have said that up-front.

fb

[Loudpipe]

Ok, that's encouraging.  I've got to pay for a top installation on my TR6, as well as get insurance and some other payments made before I can order the carb kits, but that should make a good winter project.

[Rsnip988]

i got them off and cleaned, I'm waiting for the new kits to get here so i can rebuild with new parts, i found out why the 3rd carb kept flooding ..... the Float needle was missing/broken open  either way i cant find it so i'm awaiting the new kits i found on ebay...  I got all four kits together for only $35 S&H included

Beat that
RKS

[nippon]

I think the best and easiest way to clean them is blasting with walnut shells
after you have disassembled the carbs and after locking all holes.
If you disassemble all 4 carbs at the same time, be shure that you don't
interchange the parts to the wrong carb when you are going to put them together again.
I used the Keyster kit, too. We'll see how it works.
To put the carbs battery back on the intake boots, the best ways is to warm up
the intake boots with a hair dryer a little bit, or grease the inside of the intake boots
with WD-40 (less is more). Then the carbs glide easily in.

nippon

[Lumbee]

   ...thats one clean set O carbs nippon!!!!

[Rsnip988]

They look so BEAUTIFUL!!!!!  almost brand NEW

I so jealous

RKS

[Loudpipe]

To put the carbs battery back on the intake boots, the best ways is to warm up
the intake boots with a hair dryer a little bit, or grease the inside of the intake boots
with WD-40 (less is more). Then the carbs glide easily in.

Yes.  I've never put carbs back on a Honda, but there are several parts on Triumph (the 4-wheeled varient) and MGs that require this technique.  If you put it in water and boil it or nuke it in a microwave, it works even better.