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Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

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  #31  
Old 16th December 2018
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
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Quote:
Originally Posted by lespaul6 View Post
Regarding the float setting, does anyone have a diy trick for measuring the 15 degree angle? some type of clever device or trick when you do not have a proper calculation device?
Well - Since you did say 'anyone' (not just sportsterdoc) I'll chime in here...

If you put a 1/2" spacer under the float side of the carb mouth you will get the approximate 15°-20° angle that is needed...


Quote:
Originally Posted by lespaul6 View Post
Ok....parts (finally) came in the mail from CV Performance and I replaced the needle, main jet, emolsion tube, slide, and spring- returning the bike to stock configuration.

I'm happy to report the bike runs like I just purchased it off the floor in 2001. No more is it overly rich with erratic idle issues. No more puffs of black smoke.
This once again demonstrates that the original Keihin parts are usually most appropriate for the correct operation of the CV40 carb...


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  #32  
Old 18th December 2018
lespaul6 lespaul6 is offline
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Quote:
Originally Posted by IXL2Relax View Post
Well - Since you did say 'anyone' (not just sportsterdoc) I'll chime in here...

If you put a 1/2" spacer under the float side of the carb mouth you will get the approximate 15°-20° angle that is needed...




This once again demonstrates that the original Keihin parts are usually most appropriate for the correct operation of the CV40 carb...


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Thanks for that great tip! that's exactly what I was looking for. I think my float is ok. I'm getting some gas droplets hanging from the back of the carb after the bike is sitting and cooled off for awhile.. no leak when in operation. There is nothing coming out of the overflow hose. I replaced the accelerator diaphragm because it was leaking. In case I didnt position the new diaphragm correctly I took it apart and put it back together again tonight. we will see
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  #33  
Old 18th December 2018
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Quote:
Originally Posted by lespaul6 View Post
Thanks for that great tip! I'm not sure I understand it fully.. do you mean holding the carb as it is mounted on the bike, the distance with the float sagging would be measured with the spacer? thanks again
The float setting is to be made with the carb off the bike... See the picture below from this section of the Sportsterpedia:
http://sportsterpedia.com/doku.php/t...verything_else



The 1/2" spacer would be put under the float-side of the carb exit venturi... Right where the picture shows the 15°-20° angle...


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  #34  
Old 18th December 2018
lespaul6 lespaul6 is offline
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Quote:
Originally Posted by IXL2Relax View Post
The float setting is to be made with the carb off the bike... See the picture below from this section of the Sportsterpedia:
http://sportsterpedia.com/doku.php/t...verything_else



The 1/2" spacer would be put under the float-side of the carb exit venturi... Right where the picture shows the 15°-20° angle...


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I realized what you were saying right after I finished typing that.... lol ooops
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  #35  
Old 19th December 2018
lespaul6 lespaul6 is offline
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Turns out when I changed the accelerator diaphragm I didn't also change the little O ring in the cover. It was that little O ring that was bad allowing a small amount of gas to leak after the bike was sitting. All fixed now. Thanks again everyone- this is a great forum!
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  #36  
Old 19th December 2018
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