C8The Economizer Jet is located deep in a hole to one side of the Idle Jet. E7If you took the shafts out, reassemble shafts, plates, shaft seals, and finally install the mixture adjustment screws. A3This is a good time to start snapping some photos.
A large screwdriver or even a dime gripped in vice grips, can work as well. For example, if your serial number is G187, it means it was cast after July 18th, 1947. Any jet smaller than the minimum sizes listed in bold can be drilled out using a pin vise and the appropriate bit. Now the screws cannot back out on their own. Make sure to note your carburetors settings so you can make future adjustments if necessary. If they are tight, there is no need to disassemble and remove them.
If the neoprene shaft seal is in good condition and you only see faint scratches, go for the NAA piston. We will continue to ship your packages, but due to the recent COVID-19 pandemic, your packages may not arrive as scheduled.
Some floats and valves will use a small clip to help the float pull the valve out of the seat. If you are looking for a new or replacement carb for any of the Ford N-Series Tractors, the Marvel/Schebler TSX-241B was the best that Ford engineers came up with for these tractors. 
Sort of like setting a rivet, Pinch the screw so that last thread is slightly deformed. Four corner screws secure the top. Alternatively, you can replace the seals with genuine Ford tractor oil and grease. Next, check the size of the air tube.
You can also replace the bushings separately if the shaft is in poor condition. This will ensure that the engine runs properly and efficiently. Next, remove the upper body and the float from the carburetor.
The fan belt should have at least a half-inch of flex at its mid-point.
Here, we will look at the choke shaft, the neoprene shaft seals, and the float valve seat, among other things. Make sure that the lift arms are not worn or rusted as this may lead to a weak lift. Holes that are not properly centered in the castings make the parts weak in critical areas. The choke shaft should be accessible once you remove the gas tank. However, the carburetor can wear out over time, which means youll have to replace it. This is where you will need Special Tool No.2 again. Ford- Fits: [ 9N, 2N, 8N, (with 120 cubic inch flat head engines) ]; Replaces:8N9510C,9N9510A,B3NN9510A, Carb Mfg #'s- : TSX241A, TSX241B, TSX241C, TSX33. Please make sure you have clean fuel. 
E3Install the new float seat with the correct gasket (usually red color).
The carb I used to test this process was the really nasty one pictured above. That is often hard to get exactly. If its too short, it is time to replace it. The carburetor shaft may be loose and you may need to install new bushings. The threads in the carb for the float seat are an obsolete thread specification. This would suggest that our fuel jets need to be getting a little bigger as alcohol percentage increases. 
That is not a fair test, but I was still pleased with the result. Unfortunately, this carburetor willnotfit overhead valve engines or Ferguson tractors. Usually found at hobby supply stores.
This requires drilling the casting out to accept the new bushings. A set of flare-nut wrenches may save you from rounding off those soft fuel line fittings. The most common complaint with N tractors is leaking down, and fortunately, its relatively easy to fix. The Marvel/Schebler carbs were VERY successful. Copyright 2018 Stevens Tractor. Copyright 1995-2022 eBay Inc. All Rights Reserved. This may be due to not understanding how the idle mixture screw works on these carbs. The throttle plate and shaft are brass, so those came out easy. The main mixture screw is frozen, and the carb body screws were rusted in place.
B6Time to remove the carb top. Then, the idle screw must be backed off until the throttle plate is tight. I want to start cleaning the carb, and can't do that right without first cleaning the work area. Occasionally, things will be so corroded the only option is to drill out the old material, and pick threads clear. Ford soon issued Service Bulletin 118 with instructions to re-install the econ jet and restore the "241C" carbs back to "241B" specifications.
If your tractor wont start, it might be time to replace the float valve seat.
Once this is done, you can install the new air tube. Sometimes things will come loose easier if they are first tightened very slightly. Were going to talk about some of the best replacement carburetors for an 8N Ford tractor. You may substitute gasoline. All of the individual gaskets and parts are available for purchase separately. A6Take the carb to your work bench. 2GrinderAny type that you can use to make special tools. Put the economizer jet in and snug it in place. The tapered part should be at the top when the carb is assembled. Clean the shaft and lower body with the carburetor solvent.
6Set of Taps8-32 UNC, 10-32 UNF, 12-24 UNC, 1/4-28 UNF, 1/4-40 UNS, 1/8-27 NPTF, 1/8-27 NPS Cleaning is absolutely the most critical part of any carb rebuild, and where most failures occur. If a kit has new jets, verify that the new jets have the correct size hole before discarding any old jets. A2Remove the fuel line at the carb fitting. If not, no problem, just run a #8-32 tap into the hole and make sure there are good clean threads for a new jet.
If you have an older tractor with a manual one thats worn out, consider replacing it with an electric one because it will save you money in the long run if youre planning on keeping this tractor for a while. With those installed, that leaves only the Power jet which goes in the lower half of the carb under the Main Nozzle. They go in a few threads and then get difficult. for the 9N and the last TSC-241B spec. We are removing it now, so it won't get bent later. If these components are damaged, you can replace them with the appropriate parts. The flutes mess me up. WARNING Products may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.For more information, visit www.P65Warnings.ca.gov. You can easily remove the air filter housing from your tractor by unbolting two bolts and loosening the clamps on the air pipe. Don't worry about it too much. Watch for screw slots that have already been damaged by using the wrong size screwdriver. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Copyright 2017 - 2022 Justagric | Designed by Godwin Chibuike, Best Replacement Carburetor For 8n Ford Tractor. Most of the original or new aftermarket carbs sold for these engines can perform equally well, as long as they are properly checked-out, cleaned, and tuned. We apologize for the inconvenience, and we thank you for choosing Stevens Tractor. B7Flip the top over and remove the float hinge pin, float, venturi, and peel the gasket off. is found in the carburetor or if it has been taken apart. Alternatively, you can purchase separate bushings. Does anyone have a recommendation for a replacement carb for the original Marvel on a '47 8N?
One bit of gum, varnish, or crud left in those passages WILL prevent the rebuilt carb from performing properly.
All of the passages need to be checked, cleaned and possibly drilled out to a size that is larger than the jet. This isn't a huge issue.
The pump base on the 8N was cast iron. If you have a good eye, a piece of 1/4" dowel rod makes a great gauge to roll across and measure with. The choke shaft seal is a felt washer. Make sure you have seen the horses ready so you can put the hood on securely. Update: You probably have a limited collection of jets to choose from. The 8N Ford tractor is a classic, and its a great choice for someone who wants to get into farming. Sometimes the seals will be behind a metal retainer. Sorry to hear that you are having such poor luck. I usually run the correct size tap in each threaded hole as part of the cleaning process even when things come apart with no trouble. Loosen the air tube hose clamp at the carb and pull the air tube off. That's certainly a lot less expensive than soaking in carb cleaner. Then drop the float needle into the seat, set the top gasket on, and hang the float in place with the pivot pin. Finally, install the shaft adjustment screws. Catch it before it hits concrete. Putting new parts in a dirty carb often does not have the desired results. The shaft and blade should fit snugly in the hole and in the jet slots. Speed and performance were not an issue!! Do rinse thoroughly, until all vinegar smell is completely gone, or the carb will immediately start rusting again. KEEP THE OLD JETS! A fan belt with a good flex should be at least half an inch wide and a squeak is another indicator that the float valve seat needs to be replaced. Does anyone have any experience with the Zenith? C9If the shafts were very loose you may need to drill and install new bushings.
You may need to pry around the edge a bit to separate the bottom half of the carb from the gasket material. This is still good advice for any carb work.
About quart size should do it. You should not be making new threads, just cleaning out threads that are already there.
It was definitely NOT worth the $162 I paid for it.
A bad water pump will squeak. C5Removing the Main Nozzle is a bit obvious. Its easy to find a new air tube with the same inside diameter as the old one. Look down in the hole with a brite light and make sure there is a jet installed. Use drill bits to check sizes, and the correct tool to fix them is ready to go. The inside diameter should be 1.5 inches. For a better experience, please enable JavaScript in your browser before proceeding. If your fuel is contaminated, you cannot fix the problem with a new carburetor. You may need to loosen more of the clamps or even cut the hoses if they are really old. Before you begin, make sure to drain the gas from the tank on your 8N tractor. recommended by Ford. To replace the shaft of the carburetor, you must first remove the idle screw and then insert the throttle plate. Don't under-size the idle jet or fail to rod out and open the idle fuel passages.
8N-9510 TSX-241B = 8N 313112 and up. The proper screwdriver will have a flat blade no wider than the shaft. Each passage must be larger than the jet that goes in there, or the passage will restrict flow more than the jet. I did some checking and believe this is another of those issues caused by replacement parts from China that just don't fit. The inside does not look any better. The engine will still start, adjust, and run well. Remove the washer seal where the main mixture screw went into the carb. Carb rebuild kits are available in two versions for the M/S carbs. If your model has been discontinued by the manufacturer or if they no longer make manuals for it, then you might want to consider getting an aftermarket manual instead of trying to find parts online it may be easier than finding parts online anyway. There is no substitute for a screwdriver specially-ground to fit. Similar to removing the Main Jet, you need to use the correct size screwdriver that will reach it. Disconnect the radiator cap, too. E2Install the correct jet into each hole. Nearly all of the M/S type carbs can be rebuilt to the TSX-241B specifications. The entire top surface of the float should be parallel with and approximately 1/4" away from the gasket surface.
This fitting is soft and easily bent. None of these trademark holders are affiliated with this web site, nor is this site sponsored or endorsed by them in any way. These tractors are identifiable by their flathead engine wihich has the carburetor mounted on right hand side of engine. if this adjustment seems way off STOP, and make sure the seat for the float valve is screwed all the way in. Rubber gloves may be needed depending on what you use for solvents/cleaners, skin sensitivity, and how hands-on you tend to get with that stuff. The serial number of your 8N tractor can help you determine the date of manufacture. Many of the replacement carbs may not have been made for a Ford tractor. We still need to stay completely square and perpendicular to the item being drilled. After draining the gas, disconnect the fuel line and light wire, remove the radiator cap, and unscrew the four bolts on the dash and doglegs. The new aftermarket M/S types that I have seen are poor quality. E4Install the Main Nozzle with a gasket that looks similar to the one that went under the float seat, but slightly smaller. A good carburetor can last for a long time. Sizes Found = 0.026 0.027 0.029 0.037 (TSX-241B 0.038) 0.043 0.041 [0.046] 0.047 0.049, Power Jet = 9N 9533 M/S # 49-162 #8-32 Thread (large head) The idea is to remove the jet without having to drill and tap the remains out after wringing the top off. This is usually caused by a worn shaft. I've found this is usually nearly impossible to get wrong. The Fora platform includes forum software by XenForo, Outdoor Hub, LLC (d/b/a Carbon Media Group), 30800 Telegraph Rd, Suite 1921, Bingham Farms, MI 48025 USA. Carefully remove two screws that hold each plate to the shaft. After way too many hours researching jet sizes, then rebuilding and testing a few carbs, it seems that almost any size jets can be used. The seals can be picked out and replaced without removing the shafts. To begin, disconnect the gas line from the tank and drain the fuel. A1Find a small fuel-resistant plastic or tin container. C7The other two jets are in the carb top. Try to replace the seat by hand, if youre unsure about its thickness. Some screwdriver shafts are 1/4" or you could use a 9/32" drill bit. Carburetors are limited to replacement only, no refunds or replacement will be given if rust, dirt, etc. I find it easiest to use a smooth dowel and estimate that last 1/32".
Hold the screwdriver firmly and squarely in the slot and apply just enough force to break the screws loose. The fitting should have a fuel screen on the inside end. B2Check the idle speed screw. The studs should stay in the carb. Wear safety glasses.
View cart for details. Many carbs rebuilt by previous owners will not have been properly and completely cleaned. The next part is the hydraulic pump. Usually, shafts are the worst-wearing component on your tractor. If you cut your own gaskets, make sure you take any change of gasket thickness into account.
If you don't have access to shop equipment like that, these carb parts can be carefully drilled-out by hand. If your tank is rusting then this will contaminate your fuel.
Hold the screwdriver squarely in the slot.
Another way to tell the age of your tractor is by looking at the hydraulic pump housing. If ok, continue installing cover screws and tighten them in stages to gradually snug the cover down. A special tool, such as a flat file, can be used. Digital photos are free, so there's no reason not to photograph everything as it comes apart. You may need a neighbors help to disconnect the fuel line and the light wire. Then you can unscrew the shaft and plate, and remove the shaft. In most cases, even the basic kit will have more parts than needed. Some people claim the Zenith is an upgrade. In order to determine whether the leak down is caused by a worn pin, remove the right side cover. Any jet significantly larger than 0.050" is tossed in the trash. Toss them in the jar of small parts and give it another swirl. If its not overheating, you have another issue. It may be best to assume the carb you are working on has already been rebuilt several times with a wide variety of skill or care. There was once a gono-go float setting gauge, but I have not found one of those. It needs to be wide enough to catch both slots. 138 product ratings - New Carburetor For Ford Tractor 2N 8N 9N Heavy Duty 8N9510C-HD Marvel Schebler, 7 product ratings - Brand New Carburetor w/ Gasket For Ford Tractor 2N 8N 9N Heavy Duty 8N9510C-HD, 12 product ratings - HEAVY DUTY CARBURETOR FOR FORD TRACTOR 2N 8N 9N TSX33 8N9510C-HD MARVEL SCHEBLER, 1 product ratings - Carb Screen Carburetor Fuel Elbow Strainer Fits Ford Tractor 2N 8N 9N NAA NAB 60, 1 product ratings - Carburetor Rebuild Kit for Ford 2N 8N 9N IH Farmall 100 130 140 200 230. Using the proper size screwdriver, I did manage to coax all four body screws out, without damaging the heads.
I've seen some Zenith carbs listed that claim better performance, but are much more expensive. Next, remove the lift arm bracket and inspect the cylinders cavity for damage. To do this, youll need a special tool to catch both slots of the float valve seat. I don't have drill bits in 64ths, but a 9/32" is right in the middle. The float assembly is mostly below the gasket, but it's hinged to the top, so there is less chance of bending something if it all comes out still attached to the carb top. Pull the end and rod in opposite directions, the socket should then come right off the ball stud. The original carbs seem to be much better in quality and it may be worth the cost to save it if possible. To replace the carburetor on a Ford tractor, locate the identification number on the carburetor shaft. Mission creep strikes again. None of the jets would come out either. Fits 2N, 8N, & 9N only. If you cant find a replacement shaft, you can purchase a new one. 8N-9510 TSX-241C = 8N tractors built late in 1952. E3Check the float adjustment while holding the top of carb upside down. The throttle shaft should have a neoprene seal. The Economizer jet and the Power jet are threaded the same, but the larger head on the Power jet should not allow it to drop into the hole in the top cover where the Economizer jet goes. The actual fractional dimensions closest to the decimal tolerances are 17/64" and 19/64". These tractors are identifiable by their flathead engine wihich has the carburetor mounted on right hand side of engine.
Careful even pressure will release the soft metal jet from the threads in the carb casting without damage. B4Carefully pry the shaft seals out of the holes with a Pick Tool. 9N-9510 TSX-33 = 9N carb used on all 9N,2N,8N tractors prior to serial number 8N 260596. However, new shafts may be all you need. If you dont have a special tool, you can use an old flat file. We also offer a new fuel tank, 9N9002.
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