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Hubnut 
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Joined: 30 Jul 2014
Location: Gainesville, FL
Points: 1812
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 Topic: Carbs same on C and CA?
Posted: 26 Mar 2016 at 4:39pm |
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Are the carburetors for the C and CA identical?
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1940 B "Lucy"
1941 B w/ Woods L59 "Flavia"
1942 B w/ finish mower "Dick"
1941 C w/ 3-point "Maggie"
1947 C SFW w/ L306 "Trixie"
1972 314H
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Leon n/c AR.
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Joined: 19 Mar 2013
Location: Heber Springs A
Points: 168
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Posted: 26 Mar 2016 at 4:54pm |
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B-C-CA carbs will interchange whether Zenith or Marvell-Schebler brand. Leon
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Dick L
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Joined: 12 Sep 2009
Location: Edon Ohio
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Posted: 26 Mar 2016 at 5:53pm |
 Hubnut wrote:
Are the carburetors for the C and CA identical?
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They were not! As stated above they are interchangeable.
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Hubnut
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Joined: 30 Jul 2014
Location: Gainesville, FL
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Posted: 26 Mar 2016 at 6:36pm |
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Dick,
I take it they were different from factory, but would all work despite the tractor model?
Thanks.
Steve
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1940 B "Lucy"
1941 B w/ Woods L59 "Flavia"
1942 B w/ finish mower "Dick"
1941 C w/ 3-point "Maggie"
1947 C SFW w/ L306 "Trixie"
1972 314H
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11550
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Posted: 26 Mar 2016 at 7:04pm |
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The B/C Zenith carbs were in the same family, but when it came to the CA, they had a different carb on them because of the higher rpm range they worked in. They will all interchange, but the CA carb on a B or C might be a tick on the fat side for the fuel ratio because of the different jetting...
Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Dick L
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Joined: 12 Sep 2009
Location: Edon Ohio
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Posted: 26 Mar 2016 at 7:22pm |
Hubnut wrote:
Dick,
I take it they were different from factory, but would all work despite the tractor model?
Thanks.
Steve
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Assuming all models have been upgraded. If you have a low compression 3 1/4" piston engine the carburetor from a CA might not start well with the larger venturi.
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wfmurray
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Joined: 13 Sep 2009
Location: Bostic NC
Points: 1225
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Posted: 26 Mar 2016 at 7:38pm |
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I got a 49 b to restore and the carb was bad. It did't have a venture.Got one off a C A and bolt holes was wider about one fourth inch .Filed it out to fit .Cranks real good but wants to surg when not pulling a load.
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Hubnut
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Joined: 30 Jul 2014
Location: Gainesville, FL
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Posted: 26 Mar 2016 at 8:05pm |
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Thanks everyone. Do you know the maker of the carb for the CA? Still a Zenith?
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1940 B "Lucy"
1941 B w/ Woods L59 "Flavia"
1942 B w/ finish mower "Dick"
1941 C w/ 3-point "Maggie"
1947 C SFW w/ L306 "Trixie"
1972 314H
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norm[ind]
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Joined: 29 Oct 2010
Location: bourbon,ind
Points: 2992
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Posted: 26 Mar 2016 at 8:20pm |
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does yours have a surge spring on it --yes or no if surging
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wfmurray
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Joined: 13 Sep 2009
Location: Bostic NC
Points: 1225
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Posted: 26 Mar 2016 at 9:02pm |
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It has a surg spring
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Alex09(WI)
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Joined: 15 Mar 2012
Location: CECIL WI
Points: 1698
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Posted: 26 Mar 2016 at 11:39pm |
Hubnut wrote:
Thanks everyone. Do you know the maker of the carb for the CA? Still a Zenith?
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Not sure with the zenith, but the Marvel Schebler is TSX154 for b/c/ca. Tractors came with both Zenith and M-S depending on what the factory had on hand at the time.
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www.awtractor.com
A&W TRACTOR 920-598-1287
KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY
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Dick L
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Location: Edon Ohio
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Posted: 27 Mar 2016 at 7:27am |
Hubnut wrote:
Thanks everyone. Do you know the maker of the carb for the CA? Still a Zenith?
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Any that I run across had the Marvell-Schebler
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