SOHC.co.uk Forums > CB350/400
Carburettor Rebuild Time... Help!
Drew400:
Hello all,
Time for your expert advice on a different topic please - carburettor rebuilding.
I have inserted an image to support my questions.
The bits have all come back from cleaning, plating, etc. and are gagging to go back together. However, both my manual and my photos are slightly inadequate to help my lack of experience and memory!
I recall pulling out the main jet with the leaf spring and after that the needle jet 'fell' out of the carb body. However, I'm trying to put them back and the needle jet will only go in as far as (i.e. flush to) the bottom of its channel in the carb body. Thus, there in not the space to push in the main jet behind it. Naturally, I don't want to force it as that would presumably mean it won't fall out again if I invert the carb body. Is this making sense?
Also, my set of carb gaskets from David Silver includes some small ones (o-rings really) that I don't know what they're for, Do you?
Thank you all in anticipation of further help to my (increasingly) long-term project.
D.
Trigger:
Drew, Number 2 is correct (not sure if the is round the right way) But, have you changed the O'ring on the main jet? One O'ring is for the main jet. One is for the air screw . You will need two on each side of the T pipe that is the T pipe that goes between the carb body's. You should have one on your float body. And one is for the drain screw.
Drew400:
Thanks Trigger, much appreciated.
Any thoughts on why my needle jet won't slide in far enough to allow the main jet to slot in behind it?
Cheers,
D.
Trigger:
Drew, i think you are on about the tube? Try putting it in the other way. I can not see clear from your picture, its not you its my eyes. The jet only goes in upto the o'ring and then the leaf spring holds it in.
Drew400:
Yes indeed (the tube with all the holes in its side). I've tried both ways, although the way I've photographed is the correct way, I believe. If it would go in a bit further there would then be space to insert the jet, as you say, up to the o'ring. I'm very reluctant to push it in harder! Hmmm.
p.s. Delayed reply due to watching another Marquez MotoGP win (at least the first 12 laps were exciting!).
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