Harley cv carburetor diagram Start from square one, make sure your tank screen is clean, work your way down to the carb. Click on image below to view diagram with H-D part numbers. It operates based on the principle of a vacuum slide. a two cable throttle system designed for use with the stock constant velocity (CV) type carburetor. Refer to the STICKY on elbow replacement. i know this is triumph but you have the keihin 34mm carb. and cv 44 carb. The Keihin 40mm CV Carburetor schematic diagram serves as a valuable resource for understanding the inner workings of this carburetor and can help with troubleshooting and tuning. Pull the carb and rebuild it or have it rebuilt. The document provides images and diagrams of a Keihin CV carburetor to help understand its parts and circuits. The Harley Davidson CV carburetor is a constant velocity carburetor that is designed to deliver precise fuel/air mixture to the engine. For tuning procedures we have a number of manuals available to the left. Harley Davidson Pilot Jets for CV Carburetors are normally sold in sizes 40, 42, 45, 48, 50, and higher. In the case of this carb, the fuel inlet was plastic. We will show you how to replace, install or rebuild your Accelerator Pump Diaphragm. 025 more than a big twin needle as soon as fuel port becomes active. The 88 needle (or N65C, HD #27094-88) became very popular after tuners and mechanics discovered its usefulness in tuning other models needing a richer off-idle and Oct 19, 2017 · how to rebuild harley davidson sportster cv carburetor. Your carb is a Keihn CV (constant velocity), a good carb for all around application. no. In this episode Custom Cez explains how does the CV carburetor works and how to adjust the mixture screw. These are recommendations ONLY and are not meant as complete instructions. Mar 17, 2011 · On a CV carb it is right in the middle, you will see ( on mine 1/2 of tube with a bolt clamped in to plug vacumn port. Notice how little a . The slide, as mentioned earlier, controls the amount of air entering the carburetor. If you have fuel in the carb and float bowl, when you twist the throttle from 0 to open the throttle plate, a piece of metal pushes in against a diaphragm to squirt fuel through the accelerator pump jet. The diaphram on the slide was so stretched it wouldnt go back in. I have the H-D service manual which has a pretty good exploded view of the carb, but it doesn't show every little screw and o-ring placement. Direct replacement for OE p/n 27371-76A. Disclaimer : Don't believe anything I say unless you are absolutely sure that I know what I'm talking about . Jetting may be the same as stock, but because of a variety of different high performance products, it is best to make sure that the jetting is properly set (a spit or pop thru the carburetor or a ping or knock in the engine under a Oct 25, 2010 · As best as I can remember, Harley went to the Keihin CV type carb in 1990. This page contains recommendations only. By studying the Harley-Davidson CV carburetor diagram, riders can gain a better understanding of how the carburetor functions and how different adjustments can impact the motorcycle’s performance. Importance of a carburetor in Harley Davidson motorcycles. Jun 20, 2019 · Whether Mikuni, Keihin, or whatever, they all do the same thing, just in different ways. This is perhaps one of the best written book on carb tuning, just ignore the accelerator pump section if using a non pumper carb and remember that the mixture screw is an air screw where as on carbs with the screw located behind the bowl it will be a My harley cv carb on 2002 sporster will not idle. be/TeyqMreMHbE Aug 5, 2021 · I highly recommend getting your service manual for your Harley Davidson (or cars) from emanualonline, at a very reasonable price using the link below with pr Apr 15, 2024 · Leaking 40mm CV carb Jump to Latest 2. May 28, 2019 · Buy Partman 27421-99C, 27490-04, 27465-04, 27031-95, 27490-96 CARBURETOR FITS for Harley Davidson H-D CV40 ROAD KING SUPER GLIDE CARB XL883 XL1200: Carburetors - Amazon. From what I understand, the 44MM's were not equipped with CC because they were supposedly made for race applications only since they run richer than stock, creating Apr 16, 2014 · i have a honda vfr750fg 1986 and i need a needle for a keihin 34mm cv carb. This diagram is useful for understanding the functioning and tuning of the carburetor. Harley-Davidson® CV40 Carburetor Assembly: Harley CV40 2004-2006 model shown. ) the vacumn port, if the is a hose follow it up. With a few parts from your local Harley-Davidson Dealer and some tools, you can re-jet a CV carburetor and improve the performance of your bike. While measuring the float position (below) is the most accurate method, it is also possible to "eye-ball" the setting by making sure the line on the side of Harley Davidson CV Carburetor - Tuning Issues and Troubleshooting. In this video, I show how to install the rubber Precision made main jets for Harley CV 40mm carburetors. Fitment: Carburetor Replacement for Harley Davidson (1988-2006) Sportster 883 1200 XL883 XLH1200 Custom CV 40mm carburetor ; Fitment: Carburetor Replacement for Harley Davidson (1998-Up) Sportster, (1988-2017) Softail, (1988-2016) Dyna & FXR/Touring Sep 18, 2021 · CV CARBURETOR VACUUM PISTON REPLACES HARLEY-DAVIDSON OEM 27585-88 Cycle Standard SKU: 010857 IN STOCK. $70. See if there is a hose on your petcock. When it is time to rebuild that carb, do it right. CV Performance helps riders like yourself achieve the full performance potential of their Harley and American V-Twin motorcycle with high quality intake products. Not guaranteed to fit on non-Harley model carburetors. The CV carb has long been a staple of the Harley Davidson that is often overlooked for "betmore. SCREAMIN' EAGLE® BIG BORE 44 mm CV CARBURETOR KIT ® General This kit is designed for use on 1984 through 1999 1340 Evolution engines and 1999 and later Twin Cam 88™ engines. Attached is a free bike service manual for a Harley Davidson CV Carburetor Tuning Issues and Troubleshooting. Dealer Info A Harley CV carburetor by far outperforms it's butterfly style predecessors, namely the Keihin, Zenith, and Bendix. Jordan and Ben team up to save the world from the savage effects of ethanol one carburetor at a time while battling the evil forces of Kuryakyn, destroyer of Jun 25, 2017 · I had a 98 with a CV carb. A stock bike 1340cc ( 80 CID) can develop up to 64 horse power with a well tuned and modified CV carburetor. The carburetor in a Harley Davidson motorcycle plays a crucial role in the overall performance of the bike. Apr 12, 2018 · Complete vacuum slide assembly for Harley CV carburetors. Mar 12, 2016 · I had a '94 FLSTC with a reworked Woods CV carb and Andrews EV27 cam. These are found under the carburetor mixture screw in all Harley/Keihin CV and Butterfly carburetors. 1. CVP jet quality exceeds OEM carburetor jets. This brings us to the subject of upgrading these older Harley “Soup Cans” to the newer CV style carb. CV or SLIDE CARB - The Great Compromise. For all XL 88-06 and Big Twin 88-06 using CV carbs; Included Items: (1) Intake manifold to carburetor (2) Intake manifold to cylinder head seals (1) Air cleaner to carburetor gasket (2) Air cleaner cover plugs (5) O-Rings (assorted sizes) (1) Diaphragm. With the help of a detailed animation, we can observ Jan 4, 2025 · There is also a CV40 making the rounds that is distributed by a Florida company that looks identical but not all the specs match up. This needs to be replaced. Complete vacuum slide assembly for Harley CV carburetors. Hi, so I cleaned and rebuilt my cv carburetor on my fxdx the other day and I'm really quite confused at how to tune this thing properly. It regulates the air-fuel mixture that goes Jun 17, 2023 · 27490-96 Carburetor for Harley Davidson Sportster 883 Sportster 1200 1988-2007, CV40 Carburetor for Harley Davidson Dyna & FXR Touring Electra Glide Heritage Softail Low Rider Model 1988-2017 CV40 Carburetor Replacement for Harley Davidson Sportster 1200 XLH1200 Sportster 883 XL883 1998-2016 / Softail 1988-2017 / Dyna FXR FXD 1988-2016 Jul 1, 2024 · Design Info. A magnifying glass will help you see the part number on the needle shaft close to the top. added fresh gas Free repair manual for Harley Davidson CV Carburetor Tuning Issues and Troubleshooting. Notes are included on modifying parts like drilling holes and using lighter springs. Install original cable to enrichener assembly of the new carburetor. In stock form, it is a decent carburetor, even though some Harley-Davidson introduced the current CV How to disassemble, record jet sizes and fuel screws as you take them out. To get your Harley's stock carb right, follow these instructions: l. 87 to 89-all 87 to 89-all 87 to 89-all Renew your Harley with the Cycle Pro High Performance CV 40mm Carburetor and experience the ultimate in power and performance. Thread slow jet into slow jet passage with narrow-bladed screwdriver. Sizes include 170, 175, 180, 185, 190, 195, and 200. Mar 15, 2025 · HomeAbout UsReturnsView FeedbackContact UsDescriptionCV Carb Accelerator Pump Rod for Harley Davidson Big Twins and XL models. Harley CV carburetor. Harley Davidson part numbers are for reference only. Jan 1, 2023 · By John Sullivan Harley-Davidson has used the 40mm Keihin constant velocity (CV) carburetor since 1988 on Sportsters and introduced them in 1990 on the Big Twin Harley Carburetor Float Setting. A tall guide should be used on 1990-'06 J&P Cycles Choke Cable Assembly For Keihin CV Carb For Harley Touring / Softail / Dyna / Sportster 1987-2007 (13-16) $ 22. Jun 6, 2023 · Replace Part Number: 27421-99C, 27490-04, 27465-04, 27031-95, 27490-96 Package including: 1x carburetor + 1x choke cable + 2 spark plugs + 3 extra main jets (#180 185 190) + 3 extra pilot jets (#42 45 48) Fitment for Harley-Davidson Fat Boy 1990-2007 Fitment for Harley-Davidson Electra Glide 1989-2007 Fitment for Harley-Davidson Heritage Softail 1988-2017 Fitment for Harley-Davidson Low Rider Mar 21, 2022 · ---- Motorcarb CV40 Carburetor & Choke Cable for Harley Davidson 883 1200 Softail ----Fitment-- For 1988-2006 Harley Davidson Sportster 883 1200 XL883 1200 Custom-- For CV40 Super Glide-- For 1988-2017 Softail-- For 1988-2016 Touring-- For 1988-2016 Dyna & FXR Part Number: 27031-95, 27035-92A, 27038-92, 27206-93 27207-93A, 27412-99, 27414-99, 27421-99A 27421-99C, 27465-04, 27480-97, 27482-92 Jul 21, 2023 · What you need to do is find a Keihin CV carb diagram online to see which parts fit where they belong. com FREE DELIVERY possible on eligible purchases Jul 25, 2012 · 1981 to Present Harley-Davidson® Sportster® Models Stock Sportster models from 1981 to 1987 have two cable throttle system designed for butterfly type carburetors. Do it right with Fix My Hog. 1K views 3 replies 3 participants last post by FLHS_93 Jul 7, 2024 Nov 20, 2020 · As to the carburetor, the Harley/Keihin CV carb, the accelerator pump doesn't just run or go. 4. Replaces Harley # 27040-88 and 27261-96 Nov 5, 2011 · About my carburetor Adjustment Screw. Video 1 of 2 - Dissassemble and clean the carburetorLink to video 2 of 2https://youtu. Most parts are backward compatible for all 1989-2006 Big Twin and Sportster models, with exception to 1989-1991 models that used a different float and bowl assembly. The kit contains the most commonly replaced quality seals needed to renew your Harley CV carburetor. Sep 18, 2021 · CV CARBURETOR VACUUM PISTON REPLACES HARLEY-DAVIDSON OEM 27585-88 Cycle Standard SKU: 010857 IN STOCK. Properly tuned, a CV carburetor is capable of supporting 80+ horse power in modified engines. Both the CV and conventional slide carbs are classified as variable venturi carbs. Harley_Davidson - 2019HD Jun 26, 2019 · About this item . Check to see that it is not dripping by touching the end of that line. Shop carburetor parts : Understanding the different components of the Harley CV carburetor and their functions can help riders and mechanics diagnose and fix issues with the carburetor, ensuring optimal performance and fuel efficiency for their Harley-Davidson motorcycles. Will also fit CVK40 carburetors equipped with a bottom-mount accelerator pump. Slide replacement is recommended when the diaphragm eventually becomes pinched or torn, or if the vacuum port hole has been modified by drilling 1/8" or larger causing drivability problems. It is responsible for mixing air and fuel in the correct ratio and delivering it to the engine. By analyzing the diagram and making appropriate adjustments to the different components, motorcycle enthusiasts can achieve optimal performance and fuel efficiency. In this procedure, we instead pay careful attention to the behavior of the bike as it transitions off idle and then returns to idle, and adjust all idle mixture screws to the same setting. This will restore your Harley-Davidson Carburetors. Menu. Feb 17, 2022 · About this item . This video shows stock Harley Carburetor rebuild. Feb 20, 2009 · Remove stock air cleaner, carburetor, and intake manifold. I have yet to see a butt dyno that can tell the difference a needle shim makes on a Harley CV. Everything is home made and DIY as usual! Mar 27, 2012 · Once the carb body and bowl are cleaned and polished, and the carb throat is polished, I'm ready to reassemble. Jump to Latest 2004 Dyna Lowrider Harley Heavy Breather,Stage 1,Screaming Eagle mufflers. In this video, I show you how to disassemble your c Jun 24, 2011 · 6. Reply Shop the best selection of Harley Carburetors & Carb Parts at Dennis Kirk for the best prices. Jun 1, 2004 · I wrote this manual for Mikuni, and although it directly addresses the Mikuni carb, the diagnostic principles apply to the Keihin CV and many other carburetors as well. Harley brass fuel inlet elbow replaces the stock fuel inlet on Harley CV 40mm carburetors and earlier Harley Keihin butterfly carburetors. Flip the carb over to work where the floats and the jets are. CV40 Carb Rebuild Kit Replaces OEM kit 27006-88 for use with all 1990-2006 Harley Big Twin or 1989-2006 XL models using the CV carburetor only. CV Rebuild Kit Replaces part number: 27490-04,27421-99,27421-99C,27421-99A,27465-04,27501-88,27004-89,27415-99C. In this episode we tackle the rebuild 27:58NOW PLAYING Scooter Tramp Scotty. In this episode we tackle the rebuild process of a Harley Davidson CV carburetor utilizing a standard rebuild kit. No instructions Complete vacuum slide assembly for Harley CV carburetors. Slide replacement is recommended when the diaphragm eventually becomes pinched or torn, or if the vacuum port hole has been modified by drilling 1/8" or larger causing driveability problems. it is a 95 inch motor . Hopefully this will help some of you to understand the functions of the carburetors internals. May 31, 2012 · Is there anyplace I can find and download a very detailed exploded parts view for a CV carb? I just rebuilt mine but I'm not sure about the order of the mixture screw and associated little parts. Some of these service manuals are PDFs, some are compressed files so you may need third party software to open the manual. Manufactured by CV Performance Inc in the United States. Remove starter cap (42) and enrichener assembly from stock carburetor. The CV carburetor, or constant velocity carburetor, became standard for Harley Davidson in the late 1980s. Harley Davidson motorcycles prior to 1989 used a standard butterfly carburetor and are excellent candidates for upgrading to In this video we tackle the rebuild process from the carburetor cleaning to a few modifications and especially the float adjustment of a Harley Davidson CV carburetor utilizing a standard rebuild kit. 040 shim changes the flow. checked fuel hose for restrictions 5. But could not get rid of the occasional carb hesitation. removed tank shutoff and cleaned filter 4. CV carburetor May 16, 2013 · Here's a typical Kawasaki CVK parts diagram for 1500 Vulcan Classic. 2. May 16, 2017 · And the early 880 needles all flow about . Save 10%. May 23, 2016 · As I said I would, here's a little photographic, step by step help to make the "racing" 44MM CV carb cruise control compatible. name models models models 47 27371-76 fitting 90'-all 90'-all 90'-all impractical for bikes with CV carbs, since the effects of the needed ¼ to ½ turn adjustments to one idle mixture screw are imperceptible to ordinary mortals. If your bike does not have an carb on it at the time and you are not particularily wanting to restore the bike to exact original condition, I'd consider an S&S Super "E" Shorty carburetor. Fits Big Twin 1990-2006 & Sportster 1988-2006. Harley CV carburetors are made up of several components, each of which plays a crucial role in the carburetor’s operation. There was what looked like green mold on the float. Aug 13, 2019 · Carb Vacuum line. It labels different areas of the carburetor including air and fuel passages. It is recommended that SCREAMIN’ EAGLE air cleaner kits be used with these carburetors. This diagram will help you identify and understand the various components that make up this carburetor. See Figure 4-4. 27094-88). Remove MAP sensor and manifold flanges following the instructions in the Mar 28, 2016 · The other day a Harley magazine advertisement caught my eye entitled The Cure for the Common CV. The Keihin CV carburetor also features an idle circuit, which provides a fuel-air mixture for the engine when the throttle is closed or at idle. Parts List Jun 27, 2024 · Components of Harley CV Carb. This is not complete, but it's the ones I know for sure. Screaming Eagle ignition,V&H Short A Harley CV carburetor by far outperforms it's butterfly style predecessors, namely the Keihin, Zenith, and Bendix. I notice the A/J/Screw is ALL THE WAY DOWN. Seems a 1997 Vulcan Classic 1500 uses the same carburetor as Harley-Davidson. Read about the Velocity Needle on the XLFORUM so I gave it a try. How a cv carburetor works. Jun 18, 2024 · By following these steps, you can achieve peak performance from your Harley Davidson CV carburetor. This demonstration is on a Constan A Harley CV carburetor by far outperforms it’s butterfly style predecessors, namely the Keihin, Zenith, and Bendix. Buy and install a stock jet needle for a 1988 or '89 1200 Sportster (H-D Part No. CV Carburetor Rebuild Kit,CV Carb Repair Kit for Harley Davidson CV40 CV 40mm XL883 XL1200 carb engine. Here's the list of parts that are common and not common between the Harley CV and the Kawa CV. 106. 3. The mixture packing is designed to apply tension to the mixture screw and create a seal to prevent leakage past the screw. Flip the carb over and clean out the area behind the butterfly, too. operated, and had a line going to the manifold or a "T". . Ideal for restoration jobs. 575 inch). From cleaning the carburetor to replacing the o-rings, checking the diaphragm and slide to explaining the theory behind the float adjustment. From 1989-later, the carburetor installed on Sportsters was made by Keihin. My Account; Support Forum; Free Shipping Orders Over $49. 1996 FXDS-CONV S&S E. Familiarize yourself with the CV carb parts list. Keihin CVK Carb Parts Diagram. Step by step process to show you how to clean your carburetor to make sure that your bike runs perfectly. To maintain a consistent fuel-air mixture, the CV carburetor compensates for the increased airflow by automatically adjusting the amount of fuel being delivered through the main jet. The "adicle" (Advertisement that mimics an article) started by asking if your stock CV carburetor on your Harley is worn out or in need of a major rebuild, with the intention of selling their brand of aftermarket carburetor as a replacement. Tuning Harley's CV Carb. Harley-Davidson Carburetor - Parts. Harley Davidson motorcycles prior to 1989 used a standard butterfly carburetor and are excellent candidates for upgrading to Jan 17, 2022 · About this item . Apr 23, 2023 · Good day all, I need a little help in reinstalling my CV carb. With the help of a detailed animation, we can observe how the carb works from the inside. History And Importance. New rebuild kit, cleaned all jets, removed slow jet and pumper jet and Steve | 30+ yrs. It replaced Chrome plated CV Carburetor top cover with mounting screws. Carburetor Body CAUTION Slow jets from fixed-venturi carburetors look the same as the slow jet of the CV carburetor. V iew carburetor diagram and parts list. Keihin non-CV 1986 - 1987: Carburetor Serial Number Installed On All Models ; 27501-86A (B83H (86-87) - XLH 883 All Models Domestic and California: 27502-86B (B83H) (86-87) - XLH 1100 All Models Domestic and California Dec 23, 2015 · Be sure to use copious amounts of carb cleaner and open the butterfly throttle to get in behind it as well. However, the air bleed hole sizes are different on fixed-venturi carburetors, and they must not be installed on CV carburetors. CV Performance offers the Original EZ-Just ® mixture screw, slide needles, jets, the latest design in vortex delivery emulsion tubes, carburetor parts, and complete tuning kits for your Harley-Davidson ® CV carburetor. This diagram provides a visual representation of the various components and their connections, allowing riders and mechanics to better understand how the carburetor functions and Reassembling your carburetor in great detail after cleaning or rebuilding. 49 $ 24. A key player in their performance is the CV carburetor. At least that's the way it seems to me. The float level on a Harley CV carburetor is adjusted by gently bending the metal tab that extends from the float and presses on the float needle plunger. 35 Apr 14, 2023 · Hi! I’m trying to rebuild my butterfly carb it’s off a 85 FXRC. A Stage 1 Carb Kit will normally offer you a proper range of jets for your particular model. Tossed the carb back in this am. Some of the key components include the slide, needle, jet needle, main jet, pilot jet, and choke. I took jets out and cleaned them and made sure all openings were clear. I don’t remember if the pointy end went down into the bowl or up toward the pump. I took the accelerator pump off and the needle weight came out. Fits: 1990-2006 Big Twin1988-2006 XL SportsterThis is an Aftermarket Part This item is NOT a Harley Davidson product, nor a licensed Harley Davidson product; we do not intend any false advertising whatsoever. Get it fast with same day shipping! CV Carburetor Rebuild Kit - 35 I got a used Keihin CV carb off ebay for my '69 XLCH 900. Jul 19, 2024 · Their distinctive rumble and classic design set them apart. branch heads and runs around 185 psi compression. The last video in a series on disassembly and assembly of a CV Keihin carburetor. See Figure 8. I've connected the fuel line on the lower left of the installed carb. Understanding how it works can help with maintaining your bike. Jan 17, 2022 · About this item . If not, that is probably why you have the plugged line. The following describes the basics when replacing the accelerator pump nozzle with a new CVP low profile accelerator pump nozzle (pedestal) on a Harley CV carburetor. honda don’t have part number any help to identify or source part or carb kit. Fitment: Carburetor Replacement for 1988-2006 Harley Davidson Sportster 883 1200 XL883 XL1200 Custom, for CV40 Super Glide ; Fitment: Carburetor Replacement for (1988-2017) Softail, (1988-2016) Dyna & FXR, (1988-2016) Touring, (1998-Up) Sportster How to install a CV slide. They will not balance out until you go through the fuel system and make sure all is clean. Answer to your question. The numbers are reference numbers not full part numbers. NOTE All carburetor tuning should be performed with the engine warmed up to normal operating temperature Complete vacuum slide assembly for Harley CV carburetors. Known as the CV40, it has a 40mm maximum venturi, but the design of the constant-velocity carb utilizes a vacuum-operated slide to vary the venturi opening to help maintain a proper air velocity throughout the carbs operating range. When the engine is running, air is drawn through the carburetor and into the engine by the suction created by the intake stroke of the engine. RE: Basic CV Carburetor Tuning Guide Wednesday, April 04, 2007 6:43 PM (permalink) The importance of proper float height. Repeat the toothbrush cleaning process for the top of the carb where the diaphragm sits. The mixture packing consists of a spring, washer, and o-ring. If it is the vacumn port( right hose) the VOES is at the other end . How To, Harley Davidson Accelerator Pump Rebuild. For use on pre-1990 Evolution engine vehicles, the throttle cables will need Here's the order we recommend tuning the circuits of the Keihin CV carburetor used on Harley Davidson models. See Additional Information below for Different than a carburetor rebuild, the installation of a tuners kit brings out the true performance of your Harley CV carburetor. I've connected the drain line at the bottom of the carb installed. It plays a key role in ensuring the bike runs smoothly. Jan 2, 2011 · The Keihin 40 mm CV carb used by Harley Davidson from 1989 through 2006 has an accelerator pump. Earlier models equipped with the older butterfly style carbs (pre-89 Evo’s, Shovelheads, Pans, and Ironheads) are excellent candidates for upgrading to a modern Harley carburetor. May 6, 2021 · The exploded diagrams in the websites will you understand how these things go together (and apart). Mar 16, 2021 · Buy POSEAGLE Carburetor Rebuild Kit for Dyna Electra Glide Fatboy Softail Sportster 1200 Sportster 883 XL883 Carb, CV40 CV 40 mm Replaces # 27421-99C 27490-04: Carburetors - Amazon. Video Part 1 goes over the dissassembly of your Harley CV carburetor, parts identification, and installation of the new parts found in the Tuners Kit. This brings us to the subject of upgrading these older Harley "Soup Cans" to the newer CV style carb. Ships within 1 business day PRODUCT INFORMATION Cycle Standard carburetor rebuild kits and components are high quaintly replacements for OEM components. It's been rebuilt and installed. Conclusion. Try to bring the Carb. If in doubt with how to work on a carburetor please refer the Apr 25, 2014 · So I strapped on my headlamp and pulled the carb last night and did a deep cleaning on it. This obstruction is called a slide. If you're not sure which way to turn them to tighten or loosen them, a good trick is to just look at the where the cables are connected to the carburetor, feel the tension with your finger as you adjust it with your other hand and ask yourself "is this getting looser or tighter?" A stock bike 1340cc ( 80 CID) can develop up to 64 horse power with a well tuned and modified CV carburetor. com FREE DELIVERY possible on eligible purchases TIPS: THIS KIT WAS DESIGNED SPECIFICALLY for the stock OEM CV40 carburetor, this kit will NOT function properly when used on the Screamin Eagle CV44 Carburetor. 99 * View cart: Oct 29, 2005 · Harley-Davidson introduced the current CV carburetor on 1989 Sportsters and 1990 Big Twins. What Is A Cv Carburetor? A CV Carburetor stands for “Constant Velocity Carburetor”. Oct 14, 2018 · Buy Alpha Rider Pro Carb Rebuild Kit Mixture Screw For Keihin CV CVK Carbs For Harley Big Twin 1990-1999, Twin Cam 1999-2006 & Sportster XL 883 1200 1988-2006: Carburetors - Amazon. COMMON PARTS: Readily available from your local independent Harley shop. Accepts stock size 1/4" fuel hose while improving flow by up to 20% when compared to stock inlet fittings. Complete carburetor for 1992-2006 Harley models with 40mm carb. We recommend you down load the HSR tuning books for Harley Davidson. Clockwise, the spring is sur-pressed~so its got to mean that NO GAS is getting to the cylinders or into the carb. For use with 1990-1991* FL/FX Big Twins and 1989-1991 XL models using the early model Harley CV 40 carburetor with 2-piece bowl seals (see photo). Custom Cez rebuilds a Harley Davidson CV Carburetor. Jul 19, 2021 · CV 40MM Carburetor Fit for Harley Davidson Sportster 883 1200 Touring FITMENT:-- For 1998-Up Harley Davidson Sportster-- For 1988-2016 Harley Davidson Touring-- For 1988-2017 Harley Davidson Softail-- For 1988-2016 Harley Davidson Dyna FXR-- For 1988-2006 Harley Davidson Sportster XL883 XLH1200 Custom OEM Part Number: 27412-99 27414-99 27421-99 27465-04 27490-04 FEATURE: ① 100% Brand new ② Aug 1, 2021 · CV Carburator Rebuild and float adjustment - ep 18 eng - Roma Custom Bike 769 views5 years ago Custom Bike Custom Cez explains the carburetor rebuild and adjustment on his CV Harley Davidson carb. 91K views1 year ago Scotty Kerekes carburetor -1990 & later (cont'd) f7a-2 index part flt fxr softail no. Replaces original H-D p/n #27585-88 on CV40 carburetors. Understanding the parts of a Keihin CVK carburetor is essential for proper troubleshooting and maintenance. We have some here if you do a search. Your carb has had the fuel inlet elbow replaced. I have noticed a couple things I don't really like (fuel mist coming out of front of carb, stumble at 2500-3000 rpm), so if any of you guys can shed some light on those, that'd be awesome. I messed with a few slow jets, shims under the needle and mixture screw settings. I have connected the VOES vaccum line which is at the top of the carb installed. Please refer to your factory service manual. . This step will make your life way easier. The stock CV carburetor has a venturi diameter of 40mm (1. There is no guarantee that any part (original or CVP) will fit those knock-off carburetors. This 100% brand-new carburetor is crafted with precision and excellence, ensuring that all parts are thoroughly tested and quality controlled. name models models models 21 27304-76 screw w/washer, choke cable brkt. 1988 to present models have . experience, MMI, HD technician, HD early, engine rebuild/performance, bike builder, kit bike program manager, CCI 2001-2004 Sep 21, 2020 · About this item . Keihin non-CV 1986 - 1987: Carburetor Serial Number Installed On All Models ; 27501-86A (B83H (86-87) - XLH 883 All Models Domestic and California: 27502-86B (B83H) (86-87) - XLH 1100 All Models Domestic and California carburetor -1987 to 1989 (cont'd) f7-2 index part flt fxr softail no. Apr 6, 2004 · A variable venturi varies the venturi diameter at the depression by raising or lowering an obstruction. I used the one from the spare carb. Exploded view diagram for KEIHIN FCR, FCR-MX, PWK, PWK-S, PWM, PJ, PE . Click here to see dyno testing on the CV against other carburetors. The carburetor will need to be removed from the manifold so refer to your factory shop manual for this procedure. Feb 29, 2024 · The Harley Davidson CV (Constant Velocity) carburetor is a pivotal component in a motorcycle’s engine, ensuring that the correct mix of air and fuel is delivered for smooth operation. The part number for the Screamin Eagle 44mm CV carburetor Tuner's Kit is #27419-99 Provided by Dave Morse: Your neighborhood Kawasaki dealer has parts for the CV-40 carburetor. See Additional Information below for The Cv 40 Carb Diagram is a visual representation of the internal components and connections of a CV (constant velocity) carburetor with a 40mm bore. 40mm CV carburetor is for Big Twin Evolution, Twin Cam and Sportster models ，REPLACEMENT FOR: 1988-2017 Harley-Davidson Softail, 1988-2016 Harley-Davidson Dyna & FXR Touring, 1988-2007 Sportster 883 XL883 XLH883, 1988-2002 Sportster 1200 XLH1200. com FREE DELIVERY possible on eligible purchases ** CARBURETOR DIAGRAMS & PARTS LIST. The Emulsion tube was corroded and plugged up. Harley Davidson motorcycles prior to 1989 used a standard butterfly carburetor and are excellent candidates for upgrading The Sportster CV carburetor diagram is a useful tool for understanding the inner workings of the CV carburetor system used in Harley-Davidson Sportster motorcycles. Now that you've meticulously adjusted your Harley Davidson CV carburetor, picture this: the rumble of the engine as you effortlessly accelerate down the open road, feeling the power and smoothness of a perfectly tuned machine. Black Thunderjet Accelerator Pump Kit for Keihin CV Carb - 113-020 Zipper's Cycle. Replaces original H-D p/n #27585-88. checked float level as per instructions in clymer manual. It is VERY common for the brass needle jets (in the top of the "emulsion tube") in 36mm, 38mm and 40mm Mikuni CV carbs to wear out in as little as 5,000 miles. The CVK is a popular carburetor used in many motorcycles, ATVs, and other small engines. Now I no longer need to See Worn Needle and Worn Needle Jet diagram. ) Once off, losen the throttle cables before you remove the carburetor. Tuning tips are also discussed such as setting the idle screw, pilot jet, and main jet based on the engine configuration In this episode Custom Cez explains how does the CV carburetor works and how to adjust the mixture screw. May 6, 2010 · 2- removed carb, cleaned thoroughly insured all jets and ports are clear carb clener flows through all. Proper function is critical for a smooth ride. Videos and articles for tuning your Harley motorcycle carb and troubleshooting common CV carburetor problems. it has adjustable needles maybe aftermarket no code or part number visible. This precision instrument contributes significantly to Harley Davidson bikes’ performance by regulating engine power and responsiveness. A parts manual is most helpful. On a CV the slide is called a piston or diaphragm valve. Carburetor cleaning methods will also be shown. Below is a schematic of the sportster needles and the info used in the flow calculations. Sound of a YAMAHA XTZ750 Super Tenere. I figured to upload the animation of the inner-workings of the CV carburetor explenation made super quick and simple to understand after the great success of Instructions, tuning and how-to guides for your Harley carburetor and CVP parts. 600 lift cam 248 dur. May 31, 2014 · In 1989 an accelerator pump was added to the CV carburetor as all other models began to adopt the new carburetor, and the CV carb remained virtually unchanged until retired in 2006. The old elbow id removed and a CV-Performance brass elbow is put in its place. But like Dolt said it's all in the right wrist. Sep 22, 2021 · Vacuum hose connects to the carb port, the back of the petcock and the VOES. Kawasaki Part Numbers are as follows: Feb 12, 2025 · The Harley Davidson CV Carburetor is a crucial component in many Harley Davidson motorcycles. Main Components Feb 13, 2017 · More joy for carburetor In a Previous article There was talk of the need to adapt the carburation or injection if the escapes or the air filter were changed, or if any other change was made that affected volumetric yield (the amount of air that comes in and that comes out) of the engine. I'm thinking those parts you found laying on the crankcase were leftovers or something from a previous carb repair. Refine Search * EXPLODED VIEW DIAGRAMS (946) Information. It manages how the engine breathes. Refer to appropriate sections in Service Manual. CV Carb Rebuild Kit works with Harley Davidson 1996 - 2006 1200 Custom XLC, 2006 1200 Low XL, 2004 - 2006 1200 Roadster XLR, 1996 - 2003 1200 Sport XLS, 1999 - 2006 883 Custom XLC, 1988 - 1995 883 Deluxe XLH, 1988 - 2003 883 Hugger XLH, 2005 - 2006 883 Low XLL, 2002 - 2003 883 Roadster XL, 2005 - 2006 883 Roadster XL, 2004 - 2006 883 XL, 1994 - 2000 Dyna Convertible FXDS-CONV Nov 16, 2018 · CV 40mm Carburetor With Accelerator Pump For Harley-Davidson 40mm CV carburetor is for Big Twin Evolution, Twin Cam and Sportster models and is an accurate reproduction of the OEM Keihin CV 40 mm carburetor The stock main jet is #185 and the stock slow jet is #42 Must order choke cable assembly, manifold, cable set (push-pull) and air cleaner About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Mar 6, 2019 · -If the carb is an older CV, it has a fuel "run-off" line for excess fuel running from the bottom of the float bowl to the ground / atmosphere. Replaces Harley p/n 27361-76A found on 1988-2006 CV40, 78-89 Harley Keihin "butterfly" style carburetors, CV44, and S&S Super E/G carburetors (p/n 11-2282). Always start with a fresh set of spark plugs when tuning. Jun 16, 2009 · I have a twin cam with carb. Step by step section by section. From adjusting the idle speed to fine-tuning the air-fuel mixture, this diagram serves as a valuable resource for troubleshooting and optimizing Harley CV Carburetor reference diagram. it backfires out exhaust at full fuel. Got it to start easily (magneto), idle good, run good and get good MPG (mid 40s). Harley_Davidson - 2019 Wiring Diagram Wall Chart. This needle was 44mm Carburetor Tuning Procedures: The 44mm Big Bore CV Carburetor, as shipped, is calibrated for use on modified Harley-Davidson Big Twin engines equipped with SCREAMIN’ EAGLE bolt in High Performance Cam, Air Cleaner, and Exhaust System. I wondered if that carb, if made to fit my XR650L (or any other large-bore thumper), would provide the smooth performance of the stock CV carb with the off-idle throttle response of the popular flat slide-type pumper carbs. Vehicle Specific. I have a 230 main jet and a 48 slow speed jet bike runs great and pull good but it still back fires out exhaust if I let off a little bit it stops back firing . The other hose is the vent from the bottom right front gas tank bung and goes back to the purge valve. This simple procedure is a great Harley tech tip that applies to all Harley carbs from 1989 to present that use the CV style Harley Davidson carburetor. I usually got 40 to 45 MPG. View Our Introducing our exclusive Basic Renewal Kit for early model 89-91 Harley CV style carburetors. If your CV carb does not have the name Harley Davidson cast above the bowl on each side it is a knock-off. These tuning steps apply to all Harley CV carbs from 1989 to present that use the CV 40mm style Harley Davidson carburetor but also apply to the CVK40 found on other models. 99. Constant Velocity Carburetor Schematic Oct 19, 2014 · The stock petcock was vac. Harley-Davidson SIP. lbqk pay hxuoxt wspl wwaljpl bkcgh fgajvb jtki kdwnhq cmkznin qwdjhejj wtyk lfho lcbb ovuja