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John Deere Tractors Discussion Forum
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B JD ?

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B JDfarmer

03-30-2004 16:36:01




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I recently bought a 1948 b jd. it had no carb when we bought it. We recently bought a carb for it the other day. the guy says it is for the later model b's. How can we tell if it is for this tractor compared to the one on our 46.




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Bill in Indiana

03-30-2004 19:00:40




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 Re: B JD ? in reply to B JDfarmer, 03-30-2004 16:36:01  
The 201000 and up Bs had a Marvel Schebler DLTX-67 gas carburetor (JD part number AB3533R) or a DLTX-73 All Fuel (JD part number AB3740R). The earlier Bs (96001-200999) had a DLTX-34 All Fuel carburetor (JD part number AB2711R).

Looking through the parts catalog it appears that the earlier carburetors had a machined throttle lever that was clamped onto the throttle shaft, but the later ones were stamped sheet metal that were attached by peening the end of the shaft over.

The choke shaft on the older carburetors is just pressed sheet metal, on the newer ones they have a round cover over the hub (center) of the shaft (near the choke rod connection), with a little pressed steel retaining spring that goes to the cover's center.

If I knew how to attach a picture, I'd add the illustrations from the parts catalog and carburetor manual which show this.

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B JDfarmer

03-30-2004 19:23:21




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 Re: Re: B JD ? in reply to Bill in Indiana, 03-30-2004 19:00:40  
If u have a carb for a earlier b and u need one for a later b. would the earlier carb still work or what is the major difference?



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