Stock harley carb adjustment. i might be a tad rich on top, but it is real close.

Stock harley carb adjustment. Comparison of stock vs. Super A, Super B ( 1 7/8") The stock CV carburetor has a venturi diameter of 40mm (1. Everything required to rejet your Harley-Davidson motorcycle. Harley owners often face the great debate: stock May 6, 2018 · The Mikuni HSR is an Amal-pattern carburetor, as is the stock Keihin. The CVP Rejet kit is designed for unmodified Harley CV carburetors and for riders seeking to "Jet it and Forget it" on a stock bike. Pictured, cracked intake seal. Start here: CV Carburetor Jet Adjustment/Trouble Shooting - Harley Davidson Community Then look for more here: Fuel and Carb Related Issues - Harley Davidson Community TQ Jan 26, 2011 · I have a 2000 Heritage Twin Cam 88 with Drag pipes and a Drag Speacialtys Air cleaner. Steve Knoble goes through a step by step process of tuning the stock Harley CV carburetor on a 1200 Sportster, followed by a rejett for a high flow air filter, and higher flow exhaust. i might cut back to a 180 but that wont be till april seems how the bike is up for the year but i am gonna put an ev27 cam in er this winter Harley Carburetor Fuel Inlet Elbow Harley brass fuel inlet elbow replaces the stock fuel inlet on Harley CV 40mm carburetors and earlier Harley Keihin butterfly carburetors. These jets fit the stock Harley® Keihin carburetor used on Big Twins 1976-1989 and Sportster 1976-1987 (except CV carbs). And my suggestion is to set the low speed needle (closest to the engine) 1 full turn open from the closed position. CV Performance Rejet Kit Mar 6, 2009 · I’m wanting to upgrade the stock carb but not sure which jet sizes to use. Properly tuned, a CV carburetor is capable of supporting 80+ horse power in modified engines. All stock motor, no modifications to air intake side or exhaust, carb still stock no one went inside to switch jets? There are many more replaceable parts that affect tuning in the HSR42 than in the stock Harley carburetor. Here’s a video that shows you how to remove an S&S Carb and how to rebuild it. Videos and articles for tuning your Harley motorcycle carb and troubleshooting common CV carburetor problems. Turn the screw clockwise to lean the mixture or counterclockwise to richen it. We have your Harley Shop the best selection of Harley-Davidson Sportster Carburetors at Dennis Kirk for the lowest prices. This Video will show you how to adjust your CV Carburator Air Gas Screw to get the perfect adjustment. How To Adjust Harley Davidson Carburator Air Gas Screw. The maximum adjustment range is 1/2 to 3-1/2 turns. Jul 18, 2019 · I took the Carb apart and cleaned it when I first purchased the bike and I thought the jets were stock, so how could stock pilot jet be too small? The air gas screw turned 4 1/4 turns clockwise before stopping, so I turned it 4 1/2 turns back. 200 and slightly better but still lean according to the plugs. It includes detailed specifications for different needle types such as richest, rich, and stock race carb, displaying measurements like diameter for various distances from the clip. Idle and just off-idle air/fuel mixtures are controlled by the idle jet which is fine-tuned with a screw. , less than 35mpg, then there's probably some sort of fuel leak. From what I read the stock jet for the 883 Keihin carb is 42mm. Get your Harley Jan 4, 2025 · Overview - Basic Stock Carb Model Info From 1986-1987, the stock Sportster carburetor was a Keihin 34mm, fixed-venturi “butterfly” model, as used on the Ironhead models from 1979 onward (BT models still used the 38mm version). Step Two is to make changes to the stock Harley-Davidson CV carburetor, re-jetting the carburetor to improve the air-fuel mixture and increase engine power. I have straight pipes 1 3/4 with 4 inch baffles. aftermarket carburetors. Screw the main jet needle (closest to the air cleaner) inward until the spring is almost but not quite coil bound. Plus, when you order a Harley carburetor rebuild kit, you’ll save a bundle over buying a whole new carburetor. After each adjustment, reset the idle speed to 1,000 rpm. S&S Carburetor Jetting Guide These are the jetting recommendations for S&S carburetors for various engine sizes. When the internal parts are worn out and it comes time to rebuild your carb, J&P has your perfect Harley-Davidson carburetor rebuild kit. First off warm the engine up completely and make sure the enricher is fully off Verify carburetor is set to stock settings: Idle mixture screw, 1 1/4 turns from lightly seated. The stock CV carburetor when properly tuned delivers more than adequate performance to any stock or slightly modified Harley while still maintaining good gas mileage. Please refer to your factory service manual. Feb 10, 2003 · The HSR series carburetors use either of two choke cables: the stock Harley-Davidson cable (1990 and later) or the Mikuni cable. I'm upgrading to a stage 2 breather and thunderheader 2-1 pipes. Knowing how to tune a Harley carburetor opens the door to a better performing motorcycle and more enjoyable rides. With that said, you will need an adapter (HS42/001 – costs ~20 bucks) to fit the EOM Sportster air filter, but that is a small price for a Mikuni carb on your 1200 Sportster. Bob LaRosa brings us through the clean-up and tear down of a stock Harley carburetor. Adjust the screw 1/2 turn at a time. I am trying to my 2002 883 sportster to run better. With these parts you will be able to precisely tailor the HSR42 to your engines requirements throughout its rpm and throttle setting range. Feb 1, 2013 · i av a 2000 rk with se slip on and arlen ness big sucker stock needle and 195 last year i put a 26 andrews cam with dtt ignition i put the bike on a dyno with the sensor in the exhaust for jetting carb i ended up with 46 and 205 run like never before Jan 4, 2025 · Overview - Basic Stock Carb Model Info From 1986-1987, the stock Sportster carburetor was a Keihin 34mm, fixed-venturi “butterfly” model, as used on the Ironhead models from 1979 onward (BT models still used the 38mm version). Shouldn't the float be about level with the flange? The manual's instructions are goofy. Good info for the archives in case there are others with these carbs. Realized at WOT I had some fuel issues. I'm also rebuilding and upgrading the carb. Expert carb tuners are folk heroes and sought after even as EFI machines are now standard. Free USA shipping over $100, shop carburetors, support brackets, air cleaner kits, choke mounts, for Harley Davidson Sportsters, Dynas, and shovelheads Sep 16, 2022 · The screw you are referring to will have most effects from idle to 1/4 of the throttle and very minimal to the remaining of the travel. Harley owners can enjoy maximum performance utilizing their stock manifold and Zenith new spigot mounted throttle‐body carburetor. Designed for Evolution® motors Zenith makes a carburetor specially designed for H‐D Evolution engines and later Twin Cam models . Refer to the “Fuel System” section of a 1993 or later Evolution or Twin Cam Service Manual for Big Bore carburetor disassembly procedures. If Harley Davidson bikes were chefs, they’d need the perfect spice blender—a carburetor! These small gadgets mix air and fuel to keep the motorcycle purring. So I studied the forum and did the The number one performance carburetor for Harley-Davidsons and American Big Twins now slips onto any late model Harley-Davidson using the original throttle cables. - Accelerator adjustment screw, two turns counterclockwise from seated. Aug 24, 2021 · Hello everyone. Apr 30, 2025 · Simplify the process of adjusting your Harley Davidson CV carburetor to unlock peak performance – discover the key steps to perfecting your bike's performance. Harley-Davidson Motor Co. Jul 31, 2021 · The process of Harley Davidson CV carburetor troubleshooting is very essential when trying to detect the problem of your Harley Davidson carburetor. The bike was running pretty darn good, but it would carb fart regularly, have poor response if I blipped the throttle so I decided to try to fix it. Is there a way to do this from starting from Nov 24, 2008 · I just put a conversion kit on the wife 97 sportster along with a set of andrews N4 cams. Available for stock Harley CV carburetors on 1989-2006 models. Rejet kits are designed to correct the basic lean stock jetting. Step by step section by section. Specially designed to provide a fine vortex pattern atomized mist for an optimal air/fuel mixture without impacting mileage. Find out the different parts and functions of a Harley carburetor for optimal performance and troubleshooting. Parts for Harley CV carburetors. James Gasket offers an intake manifold and gasket kit that you can buy here. The Mikuni cable is furnished for those installations that do not start with an installed stock CV carburetor. I have the stock carb for now (no money to buy S&S) and was wondering what if any jet changes I would need to make. May 6, 2008 · STOCK jets on CV carb were main from 140 (california model) to 185 (1990-1991), pilot jets from 40 to 52. Sep 7, 2025 · To adjust the air-fuel mixture on a Harley-Davidson, locate the mixture screw on the carburetor (for carbureted models). Jun 12, 2004 · I know just about all sportster cough alittle out of the carb, I have been trying different mix settings . FREE SHIPPING on orders over $89 – We Ship Today! Tommy removes the Screamin' Eagle air cleaner assembly and the stock Harley carb or CV carburetor in anticipation of a new S&S carburetor assembly. I have the bowl off and while gently lifting the float to seat the valve, it appears to go too far into the body. ************************ Carb Bracket A carburetor support bracket is a good idea for any V-Twin motor. Stock exhaust / Stock intake / Stock motor. This Mikuni Carburetor kit is for converting to a high performance carburetor, Harley Davidson Big Twin Evo models using the earlier Magneti Marelli or throttle cable operated Delphi injection systems. Learn how to adjust the idle mixture, speed, and accelerator pump for optimal performance. Carburetor Disassembly This Big Bore carburetor uses many of the same parts and rebuilding procedures as stock 1993 and later CV Carbureted models. Instructions, tuning and how-to guides for your Harley carburetor and CVP parts. The ease of use makes them still desirable today. the above numbers are not mine, they are just an example of how to post your setup. This video shows stock Harley Carburetor rebuild. Nov 22, 2023 · CV44 needle_jet chart PDF A chart that provides a comparison of CV44 needle jets and jet numbers. Internally the motor is stock. Sep 22, 2024 · This comprehensive guide addresses common carburetor issues, outlines essential tuning steps, and emphasizes the importance of road testing. Mikuni designed the HSR to accept the Harley cable to save you money and because the stock cable works well. Amal-pattern carburetors have three basic air/fuel control element To select a Harley Davidson HSR or HS40 Carb Kit, Parts or Accessories, “HOVER” over Harley carbs on the menu to the left of the screen and click on your relevant selection from the drop down list. 575 inch). Available for all 1989-2006 Big Twin, Twin Cam, and Sportster models using CV style carburetors. That's what these instructions are all about. Nov 1, 2016 · The basic set up is part of the drill when you’re installing a new carb. Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. All the Mikuni carb HSR series flow considerably more: Complete tuning kits for Harley CV carburetors. Unlike some aftermarket tubes, the Velocity Tube accepts both H-D factory and OEM replacement main jets for ease of Last winter I did a 1200 conversion with the s&s kit on my 2002 883c. Learn to tackle common issues, tune for better performance, and understand crucial components affecting fuel delivery. CV Performance jets for your Harley carburetor. Get your Harley running smoothly with this essential maintenance How to identify, select, modify, improve and tune the L&L Model M bronze carburetor for better performance on your older H-D motors Sep 18, 2024 · Unlock your Harley Davidson's full potential with our comprehensive guide on adjusting Mikuni carburetors. From synchronizing multiple carbs to testing after rebuild, empower your motorcycle maintenance The “standard” procedure involves setting each idle mixture screw one at a time to the point of best/smoothest idle, then adjusting idle speed if needed. He gives an up-close view of which screws he is turning and when, while making adjustments to the tune. Checked a bunch of other things. I was going to try and tune the carbs. Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the Cycle Pro High Performance CV 40mm Carburetor. Comes with extra main jets (#180 #185 #195), extra slow jets (#42 #45 #48) CARBURETOR REPLACEMENT: You will get the fairly reliable and durable carb to help deliver optimum engines performance and to give your motorcycle the new power and torque. Complete tuning and jetting components for your CV carburetor. And therefore, it shares similar parts which perform similar functions. I dont like my bikes running lean! thx dan Jun 24, 2025 · Tools Needed for Adjustment To adjust a Mikuni carburetor on your Harley Davidson, ensure you have small vice grips and a #2 Phillips screwdriver ready for precise tuning. Aug 30, 2022 · Gives you everything needed for a complete installation Kit includes performance intake manifold, rubber flange, HSR carb, high flow K&N filter, chrome cover, head breather kit, bolts and hardware Installation instructions and hardware are included Pre-jetted and ready to run Use stock Harley-Davidson throttle cables Harley Carburetor Rebuild Kits If your Harley’s carburetor isn’t working right, your Harley isn’t working right. Many of the same principles are Visit CV Performance to get your American made carburetor parts for Harley motorcycles from CV Performance. May 23, 2010 · hi, i live across the pond in scotland , needless to say there aint many shovels near me , ive a 81 flt, with andrews cams, stock pistons and super b carb, for the life of me i cant get her to run sweet. I have it set at about 2 3/4 turns out from seated. Perfect choice to replace your defective carb Feb 16, 2016 · 1993 883 Hugger Here is the info I,m no specialist when it come to jetting and could use some help here. If lower still, i. Oct 15, 2020 · About this item INCLUDING: The stock main jet of harley carburetor is #170 & the stock slow jet is #42. I think ive got my air screw and idle set pretty mint, as well as my acc pump. Harley-Davidson Carburetors & Carb Parts The world of Harley carburetor tuning is vast. mainly doing this for us CV carb guys, but if you have a S&S or Mikuni you are welcome to chime in as well. Velocity Emulsion Tube for Harley carburetors is a direct replacement for stock carburetor jet holder. Learn the secret to installing Harley CV carb needle jets with this easy-to-follow tutorial. You want to confirm that everything is as it should be. Each step must be performed carefully to prevent damage to the carburetor assembly and ensure optimal performance. Standard Finish – 40mm venturi Dual throttle cable carburetor All year H-D® models with use of proper manifold. Due to the CV carburetor's stable metering characteristics, Harley then commissioned their own version to replace the aging butterfly style carburetors. Idle speed screw, 1/2 turn clockwise from engagement point. Get one. e. Our step-by-step instructions cover idle speed settings, air-fuel mixture adjustments, jet replacements, and troubleshooting techniques, ensuring your bike runs smoothly . Accelerator adjustment screw, two turns counter-clockwise from seated. My question is, would a 180 main jet and 46 slow jet be too much? Or should I go with a 175, 45? Stock jets were a Feb 10, 2003 · The HSR series carburetors use either of two choke cables: the stock Harley-Davidson cable (1990 and later) or the Mikuni cable. Mar 6, 2019 · With a stock motor, If less than 40 mpg, then you are probably running rich. here is the format in witch to post your carb specs: Pilot Jet: 42 Idle A/F screw: 1-3/4 turns out Main Jet: 160 1000 Feet above sea level. The jetting in your carburetor should fall within the ranges indicated within the chart. Apr 27, 2015 · hey fellas, I've got a 93 flstf with a stock evo, kheinin cv carb. Swapped to 195 still lean. Over the years, there have been many different carbs used on Harleys. Kits are designed to go beyond rejetting and bring out the performance in your stock Harley carburetor. when i put my thunderslide and s&s intake i rejetted to 185/45 and it made a whale of a difference in performance. FREE SHIPPING on orders over $89 – We Ship Today! Learn how a Harley Davidson carburetor works with this detailed diagram. Bike runs better but seems to get choked up when sitting at idle for long periods of time and I will have to blow it out to get it to Harley-Davidson ran on carburetors for decades. Most stock Keihin CV carb setups come with a 42 slow jet and a 160–170 main jet, depending on the year and model. I tried The stock Harley CV40 carburetor flows about 185 CFM (cubic feet per minute) when flow is measured at a pressure difference of 12 inches of water. Oct 8, 2024 · Revitalize your ride with our comprehensive guide on rebuilding a Harley Davidson carburetor! Discover common issues affecting performance and learn step-by-step techniques to ensure optimal function. They also use stock Harley-Davidson throttle cable. 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. Jul 22, 2003 · Harley’s Keihin CV (constant velocity) carburetor is based on the basic Amal slide carb design from the early post-World War I era. Super E carbs are found on many Harley Harley-Davidson® CV40 Carburetor Assembly Harley CV40 2004-2006 model shown. Jun 5, 2025 · Luckily, the TM42-6 fits perfectly into the stock intake manifold – it’s a match made in heaven. Contrary to popular folklore, all Keihin non-CV carbs did come with accelerator pumps. I have no top end speed. American made and fit Harley CV carburetors. Take you time and work clean. Yeah, I know you do not have a spring. There's much more involved in adjusting the idle mixture on a CV carb. Carbs from great brands like S&S Cycle and Mikuni. This is impractical for bikes with CV carbs, since the effects of the needed 1⁄4 to 1⁄2 turn adjustments to one idle mixture screw are imperceptible to ordinary mortals. Should I rejet or try to find a stock air cleaner setup and see if that fixes the problem. to find your Complete Harley Tuners Kit designed to unleash the potential from your stock CV carburetor. I thought I'd share my own insights and clear up some Mar 5, 2017 · When it comes to stock Sportster carburetor jetting—especially for models like the 883 or 1200—Harley typically runs them lean from the factory to meet EPA regulations. The hole in the flange was machined to just about . This is Not a tuning kit. This was done before I bought it. Just put the 210 main in and am about to go test, but everything Apr 3, 2011 · V-Twin Harley Davidson forum. Jun 16, 2009 · Many people are under the assumption that to properly adjust the idle mixture on a CV carb that you just turn it open 3 turns and that's it. Many stock Harley carbs have been modified or removed and replaced. For maintenance, consider using an S&S Super E Carburetor Rebuild Kit to keep it running smoothly. Additionally, it lists Harley main jets and Harley pilot jets with corresponding jet and part numbers. Do it right with Fix My Hog. Learn essential troubleshooting steps, including visual inspections and leak tests, to ensure your ride runs smoothly. Sep 11, 2024 · Discover how to adjust a carburetor on your Harley Davidson for optimal performance. Direct replacement for OE p/n 27371-76A. Accepts stock size 1/4" fuel hose while improving flow by up to 20% when compared to stock inlet fittings. Mar 9, 2005 · I threaded the holes and inserted the stock Harley studs for mounting. I had in my '93 FXRS (hypercharger, drag pipes) 160 main and 42 slow jet (stock for year 1993) . But in my opinion it was too lean and I put 180 main and 45 slow (now I need to finish the rebuild and do some test rides ). Discover 3 pro tips for peak performance today! Find the Cycle Pro High Performance CV 40mm Carburetor at Dennis Kirk. i might be a tad rich on top, but it is real close. Use when installing new exhaust systems or just tuning for better performance or mileage. This Super E Carb Tuning method requires NO SPECIALTY TOOLS and can be done by ANYONE in just a few minutes. Jun 26, 2025 · Unlock the full potential of your chainsaw with our expert guide on S&S Super E Carburetor adjustments. obviously its down to the super b as everything else has been renewed, my jetting is the In this video I'll show you how to tune your S&S Cycle Super E Carburetor the EASY way. Downloads and stores the stock calibration so that it can be restored at any time Stock calibration or any of numerous canned tunes available for flashing at all times Auto tune capabilites using your stock narrow band sensors. Mar 28, 2016 · The other day a Harley magazine advertisement caught my eye entitled The Cure for the Common CV. Jun 1, 2004 · Harley's Keihin CV (constant velocity) carburetor is based on the basic Amal slide carb design from the early post-World War I era. Precision designed to work with Harley and CVP motorcycle components. May 31, 2025 · Types of Carburetors Used in Harley Davidson Motorcycles Description of the different carburetor models compatible with Harley Davidson. Includes setting the stock mixture sc & S Carburetor Quick tuning Tips Verify carburetor is set to stock settings: Idle mixture screw, 1 1/4 turns from lightly seated. Thanks. 008 less than the stub of the CV carb. (Provided you have a high flow air cleaner and a non stock Get the best air/fuel mixture with a new aftermarket Harley Carburetor from Dennis Kirk. Just upgraded my carb on my 94 softail from a stock cv to a mikuni. Includes all components for tuning your H-D CV 40 carb. I have 45 pilot jet, 185 main, drag pipes. CVP's exclusive Velocity Emulsion Tube is a direct replacement for the stock Harley CV carburetor emulsion jet holder. 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. Shop the best selection of Harley-Davidson Carburetor - Parts at Dennis Kirk for the lowest prices. I have paughco straight pipes and lowbrow high flow air cleaner with stock 883 heads Was running a 185 main jet before the swap. Jan 15, 2024 · About this item Compability: Carburetor Replacement for 1988-2006 Harley Davidson Sportster 883 1200 XL883 XL1200 Custom, for CV40 Super Glide; for (1988-2017) Softail, (1988-2016) Dyna & FXR, (1988-2016) Touring, (1998-Up) Sportster Replacement Number: Replacement 27421-99C, 27421-99A, 27490-04, 27465-04, 27031-95, 27490-96, 27492-96 Specification: Intake mainfold side:39 mm (inner diameter Nov 16, 2002 · my evo heritage had 165/42 jetting. I could not make out the one I took out but it looked like a 56 mm. After you This is a step by step video on tuning your Harley Twincam 88 for best performance, great gas mileage and long lifespan for your engine. Im pretty experienced with pumper carbs A Harley Big-Twin carburetor vibrates quite a bit while running, which may lead to cracked intake seals, vacuum leaks, and rough running. The number one performance carburetor for Harley-Davidsons and American Big Twins now slips onto any late model Harley-Davidson using the original throttle cables. What Harley carburetor jets should I use? Jan 17, 2022 · About this item 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 Part Number: Replacement 27421-99C, 27421-99A, 27490-04, 27465-04, 27031-95, 27490-96, 27492-96 Sizes: The stock main jet is #170 Feb 3, 2013 · I stole this from some harley forum. Modified Harley or Harley-based engines tend to fall into one of three categories: Modified stock —- This engine typically has stock cylinder heads, a high flow air cleaner, high flow mufflers, perhaps a bolt-in cam and a Mikuni HSR42 carburetor, we suggest an "Easy Kit". Mar 14, 2024 · Hi everyone this is my first post on here. Mar 8, 2010 · Can someone describe the float adjustment to me. Idle speed screw, 1/2, turn clockwise from engagement point. We cover crucial adjustments, troubleshooting tips, and the importance of using quality parts. Logs without hauling a laptop on your bike! Jun 8, 2012 · Hi guys/gals, I have a 1984 FLHX Electra Glide Special with a shovelhead engine and Keihin butterfly carb. This article delves into the impact of a misadjusted carburetor, key components like the float bowl and main jet, and common issues such as rough idle and poor acceleration. These tools are crucial for making adjustments to the needle, throttle, jet, and idle settings of your Harley Davidson carb. 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. Following installation of the CVP tuners kit, adjusting the mixture screw is key to fine tuning a Harley CV carburetor. ive got vance and hines bigshot longs exhuast also. Previously modified carburetors may require a new Emulsion Tube sold separately. What main jet and pilot jet should I start out with. Harley Carburetor Float Setting 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. used the constant velocity (CV) carburetor in the 1988 Sportsters, 1990 Big Twins (EVO and TC88) until 2006. This video project series will show you how to rebuild a Harley stock carburetor and an S&S carburetor. Mikuni’s Twin Cam, Big Twin and Sportster / Buell Easy Kits even use Harley’s existing manifold, choke cable and air filter. Start bike, bring to operating temperature. This table summarizes the essential steps for changing the jets in your Harley CV carburetor. Jul 11, 2025 · How to Disassemble and Properly Tuning Your S&S Super E Carburetor If you have a Super E on your bike, or are thinking of getting one, this video article will give you a great overview that will get you familiar with the components and how they work. So far so good has much improved the power and throttle response. lqo aku qdls1p bzfsc8 vu g353v uti33 ie8ida sk3ltxe 4bhh