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Keeway Superlight 125 carb issue

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Rjw1993
L Plate Warrior



Joined: 10 Jan 2015
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PostPosted: 12:31 - 11 Mar 2015    Post subject: Keeway Superlight 125 carb issue Reply with quote

So I don't know much about bikes, I figured surely someone here can help me.

My crank case had a plugged up hole, while out riding Sunday, the hole leaked and I ran out of oil 👍

I plugged the hole back up and refilled with oil, started it with the choke off, at which it never starts, but it started? So I notched it down to warm it up and it cut out, I heard an odd noise coming from the carb, and near my idle screw, I found a screw hole with no screw in it, I covered I up with my finger and the bike runs correctly with correct positioning of the choke, and it doesn't cut out, my question is, what is this hole and should there be a screw in there? Razz

There's not much else I can tell you, but I have posted a picture, my finger is pointing at the screw hole, hope I can get this sorted, I'm back on my old 50 moped and I hate it xD
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Rogerborg
nimbA



Joined: 26 Oct 2010
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PostPosted: 13:26 - 11 Mar 2015    Post subject: Reply with quote

Looks like your idle mixture screw has dropped out.

http://2.bp.blogspot.com/__DYtEEjm5wE/SdE2lp3cYgI/AAAAAAAAABo/92yQIiecTJM/s320/carb.jpg

In anticipation of your next question: I don't know where you'd get a replacement. You could try https://www.ajsutton.co.uk/, http://cmpo.co.uk or some "pit bike spares" style sellers to ask about your specific carb. I see it's a PZ26, but there are Keihin, Dekni and probably other brandings of that model.
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Rjw1993
L Plate Warrior



Joined: 10 Jan 2015
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PostPosted: 19:33 - 11 Mar 2015    Post subject: Reply with quote

Rogerborg wrote:
Looks like your idle mixture screw has dropped out.

http://2.bp.blogspot.com/__DYtEEjm5wE/SdE2lp3cYgI/AAAAAAAAABo/92yQIiecTJM/s320/carb.jpg

In anticipation of your next question: I don't know where you'd get a replacement. You could try https://www.ajsutton.co.uk/, http://cmpo.co.uk or some "pit bike spares" style sellers to ask about your specific carb. I see it's a PZ26, but there are Keihin, Dekni and probably other brandings of that model.


Thanks man! I was hoping this would be the issue, I'll call my local bike shop and let them know what I need, thanks Razz
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bikenut
World Chat Champion



Joined: 21 Nov 2011
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PostPosted: 11:36 - 12 Mar 2015    Post subject: Reply with quote

make sure you fit the new needle correctly..........needle then spring then washer then o ring then fit the "unit" into the carb........see a cmsnl exploded view of similar carb for reference......try the cb500 exploded view for instance......yes I know total different animal but see the mixture screw part........ 8o) :karma: :up:

do you get it now?
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