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Needling question

  • Thread starter Thread starter albi
  • Start date Start date
A

albi

Guest
With thanks to basscliff for his brilliant website, I have a stupid question about raising the needle on my CV carb. Using the attached image as a reference, how do I do it:confused:

carby.jpg
 
well I guess it depends on what you're trying to do. If you are trying to raise the needle the c clip on the inside is what you are after. usually needle adjustments are unnecessary for stock setups, and aftermarket jet kits are best for that tuning.
 
Sorry, should have given more information. I have pods and therefore am running a bit lean at about 4000rpm. I thought I'd go down the raising needle path before spending money I don't have on a dynojet setup.

Where is this c clip you speak of?
 
The GS engines are very lean from new and run quite a bit better with a little needle shimming in my experience. To raise the needle you need to remove the needle and then reduce the thickness of the plastic washer ON TOP of the clip. Of course, these instructions are for US models without adjustable needles. Not sure what kind of needles other countries received.
 
Nessism said:
The GS engines are very lean from new and run quite a bit better with a little needle shimming in my experience. To raise the needle you need to remove the needle and then reduce the thickness of the plastic washer ON TOP of the clip. Of course, these instructions are for US models without adjustable needles. Not sure what kind of needles other countries received.
Click to expand...

Sorry to be such an idiot, but where is the clip you speak of? Is it in the body of the carb? And the needle you're referring to is the one attached to the slide right?

Please excuse my noobyness.:oops:
 
You need to remove the needle from the slides with a pair of long needle-nosed pliers or circlip removers. Look onto the slide and you'll see the clip.
The needle has an e-clip on it. I'm not sure if you have notches on your needle to raise an lower it. You need to get it out first and get back to us.
 
Referencing the picture above, look in the right side. You will be looking past the diaphragm, down to the bottom of the slide. There, you will see a plastic stem sticking up the middle. Holding that stem in place is an internal circlip. To remove that, you will need some long circlip pliers or a set of 5 1/2" needlenose pliers from Sears. Remove the clip, use the pliers to pull out the plastic stem. You can now push the needle up from the bottom. Pay attention to the order of washers, there will be a small clip on the needle itself, with a thicker nylon spacer above it and a thin metal washer under it, along with a spring. The spring pushes the needle up all the time, so to raise the needle, you need to reduce the thickness of this nylon spacer. One common way is to use washers from an assortment pack at Radio Shack. The smallest washers in that pack fit the needle and down in its mounting hole in the slide. Probably 2 washers will be enough.

Have you changed the main jets at all? That will help considerably, too. If you are only running pods and not a pipe, two sizes up might be enough. If you have pods and a pipe, probably 5 sizes, but these are just guesses.

.
 
Thanks for all your advice guys. I've taken her apart no problem, and will let you know how it goes!
 
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