dnaj
1st Gear
Posts: 67
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Post by dnaj on Oct 11, 2014 12:05:49 GMT -5
Last time I cleaned the jets in my carby, there was one jet which had a brass pick in it. I skipped it for fear of damaging it but cleaned everything else mainly to get the bike running, which it does. Next time I go in there, I may want to do a better job. I've read the thread about the brass needle in one of the smaller jets, that it does indeed serve a function, but my question is, how do we remove it? Does it just pull out? (but there aint that much stub to even pull upon. Or shall I just throw the whole body into my new ultrasonic cleaner (which btw, works great). Thanks
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Post by HGH 770N on Oct 11, 2014 13:58:42 GMT -5
The jet with the brass needle in it DOSE NOT UNSCREW It is a loctite factory push fit with one small jet hole near the end. Ultrasonic clean and plenty of carb cleaner and compressed air is good. Check needle for wear and condition as they can be bent as in photo and restrict the movement . Rog
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Post by timpa136 on Oct 11, 2014 14:12:34 GMT -5
good point to make.
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dnaj
1st Gear
Posts: 67
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Post by dnaj on Oct 11, 2014 21:28:23 GMT -5
Ok, so how does one check the needle? Does it pull out? What is the best gripping tools for that?
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Post by HGH 770N on Oct 12, 2014 14:57:15 GMT -5
If your needle and jet are in good shape it should pull out with ease using tweezers or long nose pliers ( or drop out if carb is upside down ) . Some times the needle can be stuck in with gunge at the bottom of the jet but still should pull out . If you require a new one I have some in stock. Rog
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Post by freja2012 on Oct 28, 2014 9:49:55 GMT -5
Carb again I have been pulling my carb apart for cleaning A small ball was left on my table Does it fit somewhere in the carb? Cant see it in the manual Kim Attachments:
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Post by wayne on Oct 28, 2014 23:10:18 GMT -5
In the bottom of the float bowl you should see a small moulding. There is normally a brass plug in the middle of it and that brass plug retains a small ball which is the valve for the accelerator pump circuit.
I'm guessing that if the ball has fallen out, then so has the brass plug. These plugs do come loose and I'm in the habit now of lightly punching the alloy around the brass plug to "peen" it over a bit and stop the plug coming out.
You will never get rid of the hesitation without the accelerator pump and the ball is crucial to its correct operation.
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Post by HGH 770N on Oct 29, 2014 9:19:18 GMT -5
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dnaj
1st Gear
Posts: 67
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Post by dnaj on Oct 29, 2014 11:28:41 GMT -5
If your needle and jet are in good shape it should pull out with ease using tweezers or long nose pliers ( or drop out if carb is upside down ) . Some times the needle can be stuck in with gunge at the bottom of the jet but still should pull out . If you require a new one I have some in stock. Rog Yes, please PM me and I'll pick up a new needle. Thanks
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Post by kerstin on Sept 9, 2015 14:05:34 GMT -5
Hello, we are in trouble with our RE. When starting the engine so much fuel is inside the engine that it is hard to start it. I have seen the needle inside the carb is distorted. Fro my opinon this causes the acceleration pump is always in action. so we ask for some help to get this spare part. regards Kerstin View AttachmentThe jet with the brass needle in it DOSE NOT UNSCREW It is a loctite factory push fit with one small jet hole near the end. Ultrasonic clean and plenty of carb cleaner and compressed air is good. Check needle for wear and condition as they can be bent as in photo and restrict the movement . Rog
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Post by mike500 on Sept 9, 2015 15:35:20 GMT -5
Hello, we are in trouble with our RE. When starting the engine so much fuel is inside the engine that it is hard to start it. I have seen the needle inside the carb is distorted. Fro my opinon this causes the acceleration pump is always in action. so we ask for some help to get this spare part. regards Kerstin a common problem is the fuel tap not shutting the fuel flow off when the engine is stopped which causes the proper to flood with fuel overnight,an easy solution is to fit an inline shut off valve in the fuel line or convert the fuel tap to a manual tap from a vacum tap there are posts on the forum how to do this,i had the same problem with 1 of my re5's flooding overnight but as soon as I fitted the inline valve it cured it regards mike
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Post by timpa136 on Sept 9, 2015 16:25:47 GMT -5
It sounds like the needle and seat isn't sealing, you might be confusing two separate issues?
The petcock has an o-ring that gets dry and deformed as well as any rust that would prevent closing off. I've heard a possible gs-450L petcock might work but haven't confirmed, that might be still available. Try experimenting with a different o-ring.
I should have a new float needle andseat.
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Post by wayne on Sept 9, 2015 17:12:45 GMT -5
Kerstin, I doubt that your accelerator pump is causing this. I agree with Mike. I have had the same problem as you trying to start the bike. I use a simple solution- I clamp off the fuel line before storage with a scissor clamp.
Fitting an inline tap like Mike has done is a better long term solution. Just make sure the tap you get actually does shut off the fuel. Many don't, they still allow fuel to trickle past.
Please note that TIMPA136 thinks that he may have a new float needle and seat if you need it.
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Post by allan on Sept 22, 2015 15:19:16 GMT -5
I am assuming the needle in the above picture goes in the jet to the left of the protruding tube. Is this correct? Also is it possible to explain, or show, which jet goes where as someone (who shall remain nameless) cleaned my workbench as I was cleaning the carb and moved everything around.
Thanks
Allan
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Post by jm0406 on Sept 22, 2015 15:43:42 GMT -5
You can modify the stock petcock to remove the vacuum portion of the valve. It then shuts off completely. Jeff
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