The diagram provides a detailed view of the different parts of a Zenith carburettor, including the float chamber, venturi, throttle body, needle valve, and jets. The following pics from Ford parts catalogs show the Model B Ford Zenith carburetor service parts. 8 million Ford Model A cars built from 1927 to 1931 [3]) -- reportedly 3. Apr 13, 2022 · Some older carburetors had 4 numbers stamped on the face of the mount. The carburetors are made with selective fuel inlet, and with or without a main jet adjustment. The table above shows the Zenith number for the venturi, jets, and valves specified for both the Model A and B version carburetors. 7. However, if they are not damaged they can easily be restored. PO Box 4267 Typical Zenith Model 87 Carburetor. Zenith 14007 Carburetor Parts FREE SHIPPING ON US PARTS ORDERS OVER $50 . 95. Exploded View of Zenith Model 228AV-BV Carburetor - click image to enlarge. We have floats for most Zenith carburetors, as well as fuel shut off solenoids and other parts. The effect of air cleaner deterioration on this carburetor is minimized by internal bowl venting. Always get the carburetor number so you can get the correct parts. So how do I tell from the few casting numbers that are on it as to which model I have in front of 1931 carburetor features: • top casting : a Welch brass cap , not a solid brass plug in Idle Air Passage • bottom casting : “Zenith—Roman Numeral –I ” Bowl Markings Carburetor rebuild kits and parts for automotive, marine, farm and industrial. Zenith Assembly Number: 13405. PO Box 4267 Zenith Model 61, 161, 68 Carburetor Kit ck0622 Zenith Model 28/228 Identification. Today, the company is known as Zenith Fuel Systems LLC and is still in business, offering original manufacturing equipment and replacement carburetors. PO Box 4267 Typical Zenith Model 68 Carburetor. Code number example. Model 228 carbs have the idle mixture screw in the throttle body (base) of the carb; Model 28s have the screw in the airhorn (top). I recently had a Zenith-1 and the upper housing for the back side of the throttle shaft was cast solid like the Holley's ; after researching found this was a Zenith-1 that was built after 1932 as a replacement. Stamped numbers on the carburetor are casting numbers, not carb numbers. Whether updraft, downdraft, or sidedraft, Zenith has the right carburetor to keep your machine performing at its peak. Zenith Model 28 carbs have the idle mixture screw in the float bowl, Model 228's have the screw in the throttle body. PO Box 4267 L – large bowl ( model 267 carburetors) LP – liquid petroleum gas carburetor . 25mm Dec 15, 2020 · Zenith 28 228 1 barrel carburetor identification. Zenith carburetor number index. Today, the company is known as Zenith Fuel Systems LLC, with headquarters and a modern manufacturing facility in Bristol, Virginia and still offers replacement carburetors for Continental Motors aplications Exploded View of Zenith Model 228AV-BV Carburetor - click image to enlarge. How Can I Identify My The Zenith Model 28/228 is a one-barrel downdraft carburetor used on industrial applications, as well as cars and trucks, from the 1930s to the early 1980s. M4 – marine carburetor, all brass . For identification, the model number is usually stamped on the side of the carburetor. Zenith carburettors were commonly used in classic cars and motorcycles, and understanding their inner workings is essential for troubleshooting and maintaining these vehicles. Phone 888-664-6462 Email doc@carbdoc. Zenith Carburetor Identification and part numbers. Phone 800-460-2162 9 AM-3 PM Mon, Weds, how to identify Zenith carburetors; Typical Zenith Model 161 Carburetor. The inside number is the Zenith assembly number (carb number) and the outer one is the OEM number. With throttle held in closed position, turn throttle stop screw in until stop screw just contacts throttle stop and then turn stop screw in 1 1/2 additional turns as a preliminary idle speed setting Zenith Assembly Number: 13916. These pics show the basic part numbers of the components. "2910-176-8873 - Carb kit 5703381 - includes carburetor 11641105". Updraft - Model 267. This great site is called Model A Basics - How Things Work on a Model "A" Ford . Carburetor series include 20, 23, 28, 228, 32, 62, 63 Typical Zenith Model 87 Carburetor. It consists of three jets namely, main jet, compensating jet and idling jet. PO Box 4267 Aug 25, 2021 · My 1928 Packard 526 has a Zenith carburetor that at some point replaced the Packard carb. The number stamped under the main jet and compensating jet corresponds as a rule to the bore of the jets in hundredths of m/m. Heck, the carbs could be the exact same for all I know. com. I just started having problems with flooding which can be solved by the ‘hammer the bowl’ technique. Numerical Indexes. Zenith carburetors are identified by the numbers on a round, riveted aluminum or brass tag on the top of the float bowl. Mar 26, 2015 · I have been rebuilding carburetors for over 30 years and do not recall ever seeing only a raised Zenith on the bowl; it is no doubt a Holley. U. Contact The Carburetor Doctor Inc. An outer cover is 10 12 Model A Ford Zenith Carburetor Drawn by Stan Blinko, Beaver Chapter 19 26 15 2. The original 1932-34 Model B and Model 46 vehicles all used the early style carburetor with the round float assembly. With throttle held in closed position, turn throttle stop screw in until stop screw just contacts throttle stop and then turn stop screw in 1 1/2 additional turns as a preliminary idle speed setting Typical Zenith Model 87 Carburetor. 4. Zenith Assembly Number: 13390 Zenith Model 28/228 Identification. Most are usually in a cruddy rusty condition. Zenith Assembly Number: 13910. On an alternate downward stroke of the piston, air is drawn through the venturi increasing its velocity, in turn creating a vacuum that draws fuel from a jet. Many 28's and 228's use kit CK514. Set of three Zenith 28 Marine Carburetors . 10. [4] An enhanced Zenith carburetor was supplied for the Ford Model B, but also popular as a retrofit for the Ford Model A Typical Zenith Model 161 Carburetor. These carburetors are "balanced'' Zenith carburetor rebuild kits are the best way to get your carburetor back up and running. Typical Zenith Model 267 Carburetor. Approximately 1930, Zenith changed their style of assigning carburetor type or model nomenclature. PO Box 4267 Tulsa, OK 74159 How to identify your zenith carburetor model. This selection includes throttle shafts, throttle valves, choke shafts, choke valve, floats, nozzles, jets, venturi, body castings, choke pull-offs, etc. PO Box 4267 Tulsa, OK 74159 doc@carbdoc. and Zenith Stromberg carburetors. PO Box 4267 Tulsa, OK 74159 Zenith 28 228 Carburetor; Zenith 267 Carburetor; Zenith 68; Zenith 94; Zenith 11; Zenith 33; 62 162 Zenith; 63AW Zenith; 21E 1408 Zenith; 28D Zenith; 32 Zenith; 30NDIX Zenith; 124 1/2 Zenith; 72 Zenith; K5 Zenith; DD & VD Zenith; Zenith 87; 35/40 Zenith; Zenith Carburetor Identification; Allis Chalmers Carburetor to Zenith Cross; 61, 62, 67, 68 Zenith's product was one of a small number of different carburetors used on the Ford Model T. Zenith Assembly Number: 14991. 7-90B '7' is the manufacturer code for Buick '90' is the sequential number, so the 90th Buick carb made by Typical Zenith Model 267 Carburetor. PO Box 4267 Tulsa, OK 74159 Typical Zenith Model 68 Carburetor. M2 - marine carburetor with screws, brackets, levers, and shafts in brass. e. PO Box 4267 Carburetor Basics The main function of the carburetor is to atomize the liquid fuel into a gas for combustion creating the power stroke of the engine. This can help when diagnosing any problems you may be having. PO Box 4267 Tulsa, OK 74159 Typical Zenith Model 69 Carburetor. The Zenith Updraft Carburetor performs several important functions to ensure the proper functioning of the engine. British Superior is internationally recognized for its expertise in S. Family owned since 1995, The Carburetor Doctor ships premium-quality parts daily from our Canal Flats, BC and Stettler, AB warehouses to customers throughout Canada. A variation of this design can be specified with components that will handle fuel percolation. When ordering parts, the 'code number' should be used whenever available. Zenith Fuel Systems. 12. Try posting your question in the IH section and see if you get a better response. PO Box 4267 Tulsa, OK 74159 Typical Zenith Model TU4 Carburetor. PO Box 4267 Tulsa, OK 74159 Mar 22, 2024 · Carb number is 9623 In my exuberant youth I wrecked the bowl trying to drill out the nozzle. M3 – marine carburetor with brass bowl and iron barrel . zenith carburetor diagram. 3. It is prudent to look them over carefully to make certain the top and bottom housings are not cracked or broken. PO Box 4267 Tulsa, OK 74159 Aug 5, 2021 · The Zenith Model 33 carburetors were used on a variety of Continental, Ford, Gordon Smith, IHC, Kohler, Medalist, Onan, Toro, and Wisconsin applications. PO Box 4267 Tulsa, OK 74159 Carburetor rebuild kits and parts for automotive, marine, farm and industrial. Zenith Assembly Number: 14127. Zenith Assembly Number: 10364 Zenith Model 28/228 Identification. The number stamped on these tags is the unique specification number for a carburetor’s particular application. Most Zenith carburetors are stamped with a number either directly into the top of the float bowl cover, or on a round dime-sized disc with a rivet through the center. Add 700 in front of the 4 numbers. The Carburetor Doctor has rebuild kits, floats and parts for American-made Zenith carburetors, as well as new Zenith replacement and OEM carburetors. Can somebody tell me which type each one is so I can get the right parts. As I understand there are several different models that are basically the same. We produce quality kits and components as well as comprehensive restoration and rebuilding services that are top in the industry. The drawing will open in a new window. PO Box 4267 The only way to accurately identify these carburetors is by the small square metal tag attached under one of the top cover screws. Family owned since 1995, The Carburetor Doctor ships premium-quality parts daily from our Tulsa, OK warehouse to customers worldwide. EXAMPLE: numbers CD125, CD150 and CD175 are sizes relating to the choke diameter (1-1/4", 1-1/2", and 1-3/4" respectively). Apr 10, 2019 · Quote Reply Topic: Model B carburetor? Posted: 10 Apr 2019 at 8:10am Do you know how to identify ZENITH model with the label stamp on the carburetor? Steve Jelf Zenith 1408 sidedraft carburetor kits and brass float. Buy Zenith Fuel Systems Zenith Universal Updraft Carburetor USA Made - 12522 from Farmer Bob's Parts and Supplies starting at 399. 11. The mounting bolt pattern on the Zenith 267 can vary a bit. Menu. Zenith Assembly Number: 12506. PO Box 4267 Tulsa, OK 74159 From the 34P Jan-70. Model 87 Zenith Carburetor Kit - K7064. This is usually stamped on the side of the carburetor body or can be found on a metal tag attached to the carburetor. Exploded View of Zenith Model 1408 Carburetor - click image to enlarge. 95 Special Instructions: ECON CARB KITS:Zenith Zenith Model 68 updraft kits, floats, manual. This measurement will often lead us to the correct part. 16. We have the best selection. 9. Functions of the Zenith Updraft Carburetor. PO Box 4267 Zenith carburetors produced from about 1932 to 1980 have a round tag, approximately the size of a US dime, riveted to the body of the carburetor. PO Box 4267 Dec 15, 2020 · Idle Mixture. PO Box 4267 The design was developed and owned by Zenith-Detroit, but many Model A carburetors were also produced under license from Zenith by Holley, Ford's long standing Model T era carburetor supplier. cm615 Zenith Model 61, 62, 63, 263, 67, 68, 161 and 267 Carburetor Service Manual Exploded View of Zenith Model 228AV-BV Carburetor - click image to enlarge. Model 33 Series Tag Location Home > Carburetors & parts > Kits > Zenith economy > Z615A Zenith carburetor kit fits model 61 161 67 68 Our Price: $ 24. Zenith Assembly Number: 10444. 14. com . New original and quality aftermarket parts in stock with discounted price from an established supplier. PO Box 4267 Updraft - Model 68. Zenith Assembly Number: 12749 Zenith Model 28/228 Identification. On this page you will find all currently available parts for the Zenith INAT series carburetors. The size and type of Z-Stroms are given in numbers and letters. A standard model of a Zenith carburetor is shown in Figure 2. PO Box 4267 Tulsa, OK 74159 Oct 6, 2014 · Zenith Carburetor Identification Model A (1928-31) Hello Ron, I do not seem to be able to post pics on to a PM, I will be posting some here tomorrow, you don't remember me, but I spoke to you at the MARC meet several times here in San Diego, you and a few others that got me more interested in the hobby, I spent the whole week there, --- also a belated congratulations to you on you award for Zenith 12890 Carburetor Parts FREE SHIPPING ON US PARTS ORDERS OVER $50 . The upper bodies are a little different and one has an extra port. It must be a replacement carb as there is not a brass tag to identify. A back suction economized system provides this updraft carburetor with effective part throttle fuel economy. N – special for Novi governors . In ZENITH: HOLLEY: Zenith Model 33: Holley 2010 2300 4010 4011 4150 4160 4165 4175 4500: Zenith 28 Series: Holley 2 740: Zenith 29 Series: Holley 2 885: Zenith 61 Series 161: Holley 1 1901: Zenith 62 Series 162: Holley 1 1920: Zenith 63 Series 63M: Holley 1 1931: Zenith 67 Series: Holley 1 1940 Typical Zenith Model 62 Carburetor. , main jet that is marked 125 has an orifice with a theoretical diameter of 1. The table below shows the major differences between the regular and high altitude versions of the Model B carburetor. Typical Zenith Model 63 Carburetor. They can be 4 1/4, 5, or maybe 5 3/16. Manufacturer's Part Number: C5NN9510M, N, R2923, R3655. PO Box 4267 Tulsa, OK 74159 How to identify Zenith Model 28 or 228 Carburetors. , i. Zenith 13385 Carburetor Parts FREE SHIPPING ON US PARTS ORDERS OVER $50 . PO Box 4267 Engine Model: OEM Carb # Production Carb # Zenith Repl Carb # 1969-1974: Industrial: Clinton: 420, 422: 039-0981-50: 13468: 14544: 1969-1974: Industrial: Clinton: 414, 418: 039-0980-80: 13469: 14544 Continental (Zenith Carburetor Equipped Gas) Model Years: Vehicle: Engine Manuf: Engine Model: OEM Carb # Production Carb # Zenith Repl Carb # 1941 They first table shows the Zenith-Detroit carburetors used through out production. Click on a link below for lists of available parts by carburetor number and guides to locating carb numbers and carburetor identification. 13. Since it was founded in 1911, Zenith Carburetor Company of Detroit, Michigan has been synonymous with quality, technology and leadership. Zenith carburetors built from 1932 to about 1980 have Exploded View of Zenith Model 228AV-BV Carburetor - click image to enlarge. Today, the company is known as Zenith Fuel Systems LLC, with headquarters and a modern manufacturing facility in Bristol. PO Box 4267 Very early Zenith carburetors used a tag under one of the float bowl screws, this is most commonly seen on the Model 33 series. PO Box 4267 adjustment once set. The lower bodies are marked Zenith or Zenith-1. E. . Zenith Assembly Number: 10368 Zenith Model 28/228 Identification. Zenith model 33aw8 carburetor used on ford lrg-425 zenith assembly number: 15036 manufacturer's part#: f8jl-bb zenith model: 33aw8 manufacturer: ford notes: ford lrg-425 Carburetor rebuild kits and parts for automotive, marine, farm and industrial. PO Box 4267 Tulsa, OK 74159 Model A Ford Zenith Carburetor Restoration Tips 2007-2010 by Tom Endy Acquisition: Zenith cores are easily found at swap meets. PO Box 4267 Tulsa, OK 74159 4 days ago · I believe 10386 is a Zenith part number, which I think could be off a different (but similar) tractor like a C. Exploded View of Zenith Model 124 Carburetor - click image to enlarge. How to find your Zenith carb kit. Other carb related information: The Holley carburetor was discontinued on new vehicles in the beginning of 1964 Registration number 2G0068 was the first vehicle with the Zenith Carburetor. Carb Identification for Zenith Carburetors. PO Box 4267 Tulsa, OK 74159 Zenith 14038 Carburetor Parts FREE SHIPPING ON US PARTS ORDERS OVER $50 . NEW replacement carburetors at wholesale prices. Zenith Assembly Number: 13805. The Zenith Model 28 L63 Series (Zenith Model 68-7 Carburetor) The Zenith 68~7 Series carburetor is of an up-draft single venturi design with a 1" S. PO Box 4267 Tulsa, OK 74159 Case - Fits: L (with Zenith K6A carburetor (SN: 301843 and up)), [ LA, LAH, LAI, LI (with Zenith K6A carburetor) ] Carb Mfg #'s - Case: 01709AB2, 04669AB, ; Zenith: 6799, 8714, K6A Kit includes:* throttle shaft* needle and seat* float lever pin* seal* gaskets and instructions Includes parts shown in… Model B & Model 46 Model A Ford Garage Zenith Carburetor Parts Catalog Illustrations. The first is the 'code number' which is normally stamped on the upper part of the body. My questions are: 1). Zenith Assembly Number: 10697 Zenith Model 28/228 Identification. The 52499 BD is an IH part number on a 9752 Zenith carburetor, which should be original to the B. Zenith Assembly Number: 12122. Oct 1, 2021 · One measurement that is most important on this carburetor is the length of the float bowl gasket. 888-664-6462. The fuel inlet allows fuel to enter the carburetor from the fuel tank, while the venturi is responsible for creating a low-pressure area to draw in the fuel. Zenith Assembly Number: 11744. The inside number is the Zenith assembly number and the outer one is the OEM number. Later carbs sometimes have a stamped number, usually on the top part Dec 15, 2020 · Idle Mixture. Home; Zenith Model 28/228 Identification. PO Box 4267 Tulsa, OK 74159 The following illustrations are taken from the original Model B Ford detail drawing B-9510-A of the Zenith carburetor. barrel size and a 7/8" S. PO Box 4267 Tulsa, OK 74159 Zenith Carburetters can rest on an equally impressive history, having enjoyed numerous OE fitments on familiar road cars and motorcycles, success in aviation and fitment to many commercial and military vehicles too. Zenith carburetors built from 1932 to about 1980 have The Zenith Model 33 carburetors were used on a variety of Continental, Ford, Gordon Smith, IHC, Kohler, Medalist, Onan, Toro, and Wisconsin applications. A ZENITH Carburetter, properly fitted, can be tuned up in a few hours, but when badly fitted the tuning up becomes impossible. PO Box 4267 Tulsa, OK 74159 Dec 15, 2020 · The fuel bowl is designed so that the carburetor can be used at extreme angles without flooding or starving. Zenith Carburetor Cross Reference Guide. PO Box 4267 How to identify Zenith Model 28 or 228 Carburetors. PO Box 4267 These numbers can help you determine the type of carburetor you have and the specific model it corresponds to. While I am familiar with some of the Zenith models this one is a mystery to me. how to identify Zenith carburetors; Jan 16, 2018 · There are links below and a very good article of the Zenith Carburetor. Typical Zenith Model 33 Carburetor. If there are two numbers, the outer one is the manufacturer's number. The carb is apart for service now. There are subtle differences in the dowel pins/bosses on the upper body and fittings. This series came with a triangular tag attached to the carburetor under one of the float bowl screws. Zenith Assembly Number: 13858. 15. About Us. Henry Ford had a close personal friendship with George Holley, but note that the Holley name was misspelled on the Ford drawing! Mar 25, 2015 · Zenith carburetor identification Model A (1928-31) It has a replaceable secondary well as most of them do unlike the double venturi carburetors, which in turn it does have the offset cap and main jets like the single venturi carburetors. A. New ZENITH Carburetors / TSX Main Index Don't see what your looking for Call 253-833-4106 / 1-800-994-CARB (2272) Zenith Carburetor Identification page Zenith Carbs Cross Reference / Zenith Parts Page / TSX Parts Page (press control "F" to search this page) Zenith 28/228 Carburetor Kit. Zenith “PHYSICAL size’ letter meaning in carburetor type nomenclature . Zenith Assembly Number: 14131. But wait! If you are into rebuilding Zenith carburetors you might want to We carry a Zenith 28/228 1 barrel replacement carburetor, Zenith carburetor kits, floats and many small parts. Zenith Assembly Number: 11193. This tag is the only place you will find the carburetor number. Carburetor rebuild kits and parts for automotive, marine, farm and industrial. Zenith Assembly Number: 13794. Zenith carburetors built from 1932 to about 1980 have a round aluminum or brass tag about the size of a dime riveted to the top of the carburetor. PO Box 4267 Tulsa, OK 74159 Y200 Zenith 28 Universal Carburetor. Ken. Enough already! There must be a whole floor in the library of congress devoted to articles written about this carburetor. Original equipment carburetors will have two numbers stamped on this tag. Zenith Assembly Number: 14019. 7004965. I found the rusty one at a flea market just for the bowl but it's different, 11595 and for a Wisconsin AEN. Some Zenith carburetors may also have the model number stamped on the throttle body. BY CARB TYPE Zenith 28 228 Carburetor The history of Zenith carburetor can be traced back to the Zenith Carburetor Company. Application Dimensions Exploded View of Zenith Model 1408 Carburetor - click image to enlarge. To identify a carburetor, you can look for the identification number on the carburetor body itself, which is usually located on a metal tag or stamped into the metal. The Zenith Carburetor (revised 2010) by Tom Endy Zenith carburetor documentation: Good grief! Another article on the Model A Ford Zenith carburetor. PO Box 4267 Tulsa, OK 74159 This is the Zenith parts book illustration showing the kit made available to Zenith dealers expressly for modifying the Model B and A (replacement) carburetors for customers. PO Box 4267 Parts for ZENITH Carburetors Don't see what your looking for Call 253-833-4106 / 253-833-4106 Zenith Carburetor Identification page Zenith Carbs Cross Reference (press control "F" to search this page) New Zenith Carbs Main Index The Carburetor Shop has a huge selection of individual carburetor parts, in addition to those parts found in our repair kits. The drawing of the Zenith / Solex / Pierburg INAT carburetor can be found HERE. 2 3/8″ and 2 11/16″ The information below illustrates each circuit in the Zenith 267 carburetor. Stromberg used two main sets of numbers for carburetors. Zenith tops can be recognized by the Z marking located below the throttle shaft. PO Box 4267 Tulsa, OK 74159 Carburetor kits and parts for Zenith 63, 263M carbs on trucks, marine, farm and industrial. the large volume semi-concentric fuel bowl and vent locations combine to permit extreme-angle operation. Zenith Assembly Number: 13907. PO Box 4267 Zenith 68-Series Carburetor - Service Information Author: Unknown Subject: Service & Troubleshooting - Zenith 68-Series Carburetors Keywords: Zenith 68-Series Carburetors Created Date: 5/23/2011 4:26:02 PM Carb Identification. Zenith Assembly Number: 13106 Zenith Model 28/228 Identification. Turn idle adjusting needle in lightly against its seat, then back out needle l 1/2 turns as a preliminary adjustment. Zenith Assembly Number: 13875 Zenith Model 28/228 Identification. Vehicle/Machine Manufacturer: Ford (replacement) Zenith Model 124 1/2 parts. PO Box 4267 Typical Zenith Model 267 Carburetor. The first step in identifying a Zenith carburetor is to find the model number. How to identify your zenith carburetor model. It was also fitted to most of the 4. SUPERIOR PARTS, SUPERIOR SERVICE. Lower body (bowl ) Model A Ford CARBURETOR - Zenith 1 1928-1931 [P/N A-9510-B1 Nomenclature Upper Body Assembly Hex Head Bolt 3/8"-24 ( 3 3/16) Lockwasher 3/8" (1/16 x 41/64) Bowl Gasket Idle Adjusting Needle Idle Adjusting Spring Idle Adjusting Cap Strainer Assembly Fiber Washer 1/2" (3/64 x 3/4) Throttle Shaft Assembly Fillister Head Screw #8-36 ( x 5/8) May 10, 2009 · I have a Zenith carb from a Super C apart. It is an old type of Zenith carburetor but in modem Zenith carburetors, economy devices as well as accelerating pumps are also provided. Some American Zenith Downdraft Carburetors. Zenith Assembly Number: 12566. PO Box 4267 Tulsa, OK 74159 The Carburetor Doctor has rebuild kits, floats and parts for American-made Zenith carburetors, as well as new Zenith replacement and OEM carburetors. Zenith Model: 267LCX9. They all look very much alike, but details such as throttle How to identify your zenith carburetor model. 23. Zenith INAT Carburetor Parts and Service Kits. O – offset throttle shaft (only in case it differs Zenith 7433 Carburetor Parts FREE SHIPPING ON US PARTS ORDERS OVER $50 . Zenith Model 28/228 Identification. There are one or two concentric numbers. Zenith Assembly Number: 13415. Zenith Assembly Number: 12994. Virginia and still offers original Zenith carburetor number index. 5 million of them. Zenith Model 68 Carburetor Kit. This article applies to downdraft Zenith carburetors and MAY or may not apply to updraft carburetors newer than 1930. flange. The Information has illustrations which include animation and exploded views of the Zenith Carburetor. Typical Zenith Model 68 Carburetor. Zenith 28/228 Tech Information Zenith Model 28 Duplex from a late 1940's REO truck . 5. Zenith Assembly Number: 12758 Zenith Model 28/228 Identification. PO Box 4267 Tulsa, OK 74159 Exploded View of Zenith Model 228AV-BV Carburetor - click image to enlarge. PO Box 4267 Exploded View of Zenith Model 228AV-BV Carburetor - click image to enlarge. PO Box 4267 Tulsa, OK 74159 Zenith Fuel Systems has designed and engineered the most reliable and performance enhancing carburetors available. i. uhrvgp jbvm qlofx teg bpqqa ivwny lpnn zapj zhfhv wpcrlp