Mikuni hsr42 manual adjustment. Previous topic - Next topic.

Mikuni hsr42 manual adjustment 4"H : OEM Part Number ‎TM42-6 : Manufacturer ‎Mikuni : UPC ‎172304124819 : Model ‎Mikuni TM42-6 : Item Weight ‎2. to/34uzw1wMikuni Carb HSR42mm -- https://am The kit is called the Mikuni Mileage Kit and there are separate kits for the HSR42 and 45 carburetors because the needles are different. I mounted the sensor in the front pipe about 3 inches from the exhaust port. Warm it up and adjust the idle screw to get the highest rpm. At first glance, the three HSR's look identical. Mikuni HSR42 / HSR45 / HSR48 series carburetors are simply the best. Oct 18, 2012 · In the Mikuni HSR Tuning Manual they call out the correct way to find leaks. 604-165 Main jet for fine tuning In this video we will install a Mikuni carb. Throttle cable directly controls the slide so there’s Jun 19, 2015 · I installed the TM42/11-50 nozzle and ended up with the pump rod gap adjusted to . 0 Members and 4 Guests are viewing this topic. Mikuni HSR42,45 and 48 Carburettors. Dec 1, 2022 · Mikuni Tuning Manual PDF - Tuning Mikuni Carburetors SpeedMotoCo offers the entire line of Mikuni Carburetors. Use our email [email protected], contact form or phone us on 07 47712677 to enquire. Top brands.   Any product listed that is available in different sizes will allow a selection to be made Description. jpcycles. 1. Up for Sale is This Great for gift Giving! Oct 20, 2019 · Mikuni HSR Very Rich Idle. 2. Good. Being one of the best upgrades you can give your motorcycle, these Mikuni carburetors substantially increase power compared to stock. 5 - 2 turns (more than a Bing!) 3. I wrote this manual for Mikuni, and although it directly addresses the Mikuni carb, the diagnostic principles for MIKUNI HSR42 New Style . Nov 4, 2021 · The Mikuni HSR 42 Kit comes with extra jets and a Tuning Manual. Da ist alles schön erklärt. Tuning your carburetor after installing aftermarket parts is crucial for maintaining peak performance. 5 pilot and maybe the 98 needle and #60 accelerator pump. You need to work with one circuit at a time. Installation Instructions. The HSR flatslide carburetors deliver excellent throttle response and control. It takes a while to understand the process, but over time you figure it out. What is a Mikuni Carburetor? May 19, 2023 · Regarding the float adjustment : If you change the float height by x mm it will change the fuel level by the same x mm. Feb 1, 2007 · ‎Mikuni : Vehicle Service Type ‎bikes : Exterior Finish ‎Painted : Flange Type ‎Bolt On : Specific Uses For Product ‎Performance : Product Dimensions ‎4. 2) Tuning involves adjusting the pilot air screw and potentially changing the pilot jet size to set the idle mixture, as well as changing jet needles to adjust the mixture from idle to 1/4 throttle. Jul 17, 2022 · Nadel ist dann tiefer im Düsenstock und dadurch weniger Sprit. Mar 17, 2025 · Mikuni Hsr42 Rebuild Kit; Hsr42 Mikuni; Mikuni Hsr 42 Manual; Mikuni Hsr42; Hsr Mikuni; Mikuni Bsr Carburetor; Hsr Carburetor; Mikuni Sbn 44 Rebuild Kit; HS 45 Carburetor; Mikuni Carburetor Rebuild Kit; Mikuni Phh 44; Mikuni Carb Rebuild Kit; Mikuni 44 mm Carb; Mikuni Performance Carburetor; Mikuni Bs34 Carbs The Mikuni HSR 42-18 and HSR 42-7 are designed to be bolt-on applications for Harley-Davidson motorcycles. NOTE:฀Carburetor฀Kits฀not฀designated฀as฀C. Apr 3, 2018 · 2002 XL1200C Back to an almost complete stock engine. It comes Complete with jetting and mounting kit, Tuning manual and the famous weber Specialties Guarantee and expert advice. Started by turboprop, October 20, 2019, 03:57:53 PM. parts used rebuild kit--- https://amzn. Our Mikuni parts finder may assist you in finding the replacement parts you need. com/motorcycle-air-intake-and-fuel-systems?utm_source=youtube&utm_medium=description&utm_campaign=Anatomy_of_Mikuni_Ca Dec 5, 2024 · Harley Davidson Sportster HSR42-11 Mikuni Carburetor 1200 Sportster Kit 1994-Present Buell Models 1200 Sportster 1994-2004 2006 Harley-Davidson 1200 Low EFI XLL - - 2006 Harley-Davidson 1200 Low XLL - - 2004-2006 Harley-Davidson 1200 Roadster XLR - - 2002 Buell XB9R Firebolt - - 2002 Buell X1W White Lightning - - 1999-2002 Buell X1 Lightning - - 1998 Buell S1 White Lightning - - 1997-2000 Mikuni HSR Carburetor Tuning Manual Mikuni VM Round Slide Carburetor Tuning Manual Carb Kit 34mm Single Horizontal Small Block Vanguard Installation Instructions Carb This manual provides detailed methods for tuning Mikuni HSR 42 45 48 carbs to match aftermarket parts that may be installed on your machine. Big help when dealing with these. 5 main jet on a JOST powertube (jet extender Sep 17, 2011 · Today I tried to set the pilot air screw in Mikuni HSR42. But I've already down loaded the stuff from Mikuni(thanks Tom) I did learn something interesting,The CV choke will fit the Mik. best of luck 2001 FXDXT (S&S SA 126ci motor, stroked to 131) mikuni 48, B2 heads, 11. 2012 Mikuni Parts Catalog. My guide to converting from MM EFI to Mikuni HSR42 carb. 060" (>1. for MIKUNI HSR45 Old Style . Sounds like a disaster. Even though page 5 in the Mikuni Tuning Manual states "Raising or lowering the jet needle has no effect on mileage below 70mph" I took the advice given here and raised the needle clip one notch. Mikuni Carb Kit Installation and Tuning Instructions - Updated 2/4/20. , but it doesn't seal according to Mikuni. Intake manifold, all nec­essary hardware & a high performance Mikuni / K&N air filter are included. 7M . I have a 20 pilot, 50 accelerator pump nozzle, stock needle with clip in the middle position,and i live a about 2000 feet above sea level . Please note that there is no point in attempting to tune any carburetor Apr 18, 2010 · Mikuni 42mm running too rich, how do I adjust? Plugs are sooty. This is an excellent resource for tuning or jetting your Genuine Mikuni Carburetor. the throttle opening and adjust the proper tuning components. The Mikuni HSR42 Carb is mid-range jetted for easy bolt-on installation to a wide variety of motorcycles. MIKUNI HSR42/HSR45/HSR48 Genuine Mikuni! Fits all HSR series carbs Rebuild kits available here! Made in Japan Click here for a HSR tuning and initial set up manual Standard / Factory jetting : HSR42 = 20 pilot / 165 main / 97 needle HSR45 = 25 pilot / 175 main / 97 needle HSR48 = 25 pilot / 190 main / 97 needle With Mikuni's accelerator pump technology there's no hesitation from idle to WOT. These HSR knockoffs appear to use Mikuni jets, I say that because it comes with the Mikuni tuning manual but I could be wrong. Mikuni’s Big Twin and Sportster/Buell Easy Kits even use your bike’s existing manifold, choke cable and air filter. 725 rockers. The black spacers, heat shield openings, and intake manifold openings were slightly enlarged to match the size of the 42 mm carbs, tapering from larger to smaller toward the engine. carb. 95: CC23401: Deluxe Mikuni carburetor HSR42 kit for Evolution® Big Twins1984 thru 1999 - NOT TWIN CAM: $569. For the idle system, it describes adjusting the air screw and pilot jet to set the idle mixture. Schau mal ob du im Netz das Mikuni Tuning Manual findest. 4) But there are a lot of adjustments if you want to tweak Jan 23, 2018 · All things considered, the round-slide Mikuni is an excellent carb, with a wide range of tuning capabilities. size: 160 Normal range: 150 to 210 Jet Needle Richer: J8-8DDY01 - 95 Richer: J8-8DDY01 - 96 Std: J8-8DDY01 - 97 Leaner: J8-8DDY01 - 98 Accelerator Pump Nozzles Leaner TM42/11–50 Std. 0 Members and 5 Guests are viewing this topic. Transcription . Troubleshooting and Adjusting the Mikuni HSR42 Carburetor. B. for Harley Davidson FLH Electra Glide 1970-1985 . 3 Sep 29, 2020 · 5 Reasons You Should Use a Mikuni HSR42 Carb. Adjustments to main jet, pilot jet and A/P. Thread starter Piotra; Start date Apr 7, 2011; P. Nov 4, 2021 · Do a google search for the hsr42 tuning manual. Started by Scootrskum, October 02, 2010, 06:02:11 PM. The choke system 2. The kit includes a customized Mikuni HSR 42mm Carburetor where for rockerbox oil line clearance we have re-manufactured this carb, lowering and moving the throttle cable connection to the left-hand side of the carb. If the screw position has been altered, gently bottom it and re-open it two full turns. To distinguish Mikuni from Solex, note that Solex printed carburetors with a made in Italy, Germany or anywhere else in Europe sign points to the fact that this is not a Mikuni carburetor but a purely European Solex. Injection to Mikuni HSR Polished/Chrome 42 Conversion Kit, Harley Twin Cam $ 1,880. Especially with a jet style that wasn't available at the corner bike shop. It is instantly accessible and covers all repair, servicing, and troubleshooting procedures. Air/Fuel screw is on air cleaner side, not manifold side like a CV carb, so it’s easier to adjust. Nov 20, 2012 · Do a google search for mikuni hsr42 tuning manual, that will get you a good reference and the exploded view. 95: $519. 679 at valve w/. It includes This manual provides detailed methods for tuning Mikuni HSR 42 45 carbs to match aftermarket parts that may be fitted to your machine. $639. motohelp mikuni carburetor hotline 818-574-3330. $589. Install the Mikuni spring and plunger onto the Harley choke cable. In fact, just about every Japanese bike from the 60s and 70s came with this mixer. Feb 21, 2016 · Mikuni has there tuning manual that will get it pretty much spot on without a dyno. I bought mine 'used', but new in box at a Harley swap meet for $100. A/f screw is on a/c side facing rider. Jul 22, 2003 · If you would like to learn more about how to diagnose and tune these carb sub-systems, I invite you to download the Mikuni HSR Tuning Manual (www. Mikuni HS40 Tuning Manual. TUNING THE IDLE SYSTEM: (idle – 1/8 throttle) The HSR42/45 idle system has two tunable compo-nents: the air screw and the pilot jet. You have internet, so search Mikuni HSR 42 and you will find very good information there. The results were quite impressive, just bolt on, no adjustment at all and I noticed a really smooth driving. -checked float level. It can be downloaded for free. size: 25 Normal range: 17. for MIKUNI HSR42 Old Style . 95: $589. However, since Harley-Davidson motors are often highly modified, alternate tuning settings may be required. This is the position we have found to be right most of the time. for MIKUNI HSR45 New Style . 00 AUD – $ 1,895. Each Mikuni carburetor is shipped with the HSR Tuning Manual, which I wrote for them. It comes without intake manifold, cables, and air cleaner to make tailoring to specific applications easier. Now, you don't say if you put it on or it came with the uses bike. HS42/028-A Open (Throttle) Cable, 1970 to 1995, 38 inch screw-in type. The accelerator pump system Each of these systems has its major effects in a different throttle range. Then see how many turn out that ends up being. Proper free play in HD cable (mikuni doesn’t fit as well between my engine). I cover pre-installation set-up, jets, Apr 1, 2021 · Mikuni HSR Series Carburetor Tuning Service Manual manuals_contributions; manuals; additional_collections Item Size 20. Somehow it may not be seating but how can I even check that now? It has all the symptoms from the manual. An aftermarket carburetor from Mikuni will transform your Harley into the motorcycle it should be! HSR 42/45 Owner's Manual 1997 Kits available, installation, tuning. Please note that there is no point in attempting to tune any carburetor 3 days ago · Mikuni HSR 42 tuning question. However, like any carburetor, it can sometimes experience issues that require troubleshooting and adjusting. That would be a good starting point. Addeddate 2021-04-01 21:11:25 Pilot System - Tuning the Pilot Circuit The irst step in tuning this carburetor is to get the idle circuit correctly adjusted. Take note of the amount the idle screw is turned so it can be returned to where it was before starting. Adjust the accelerator starting point so that the pump starts working immediately. Piotra Active Member. for Harley Davidson FLST Heritage Softail 1993 . 4) But there are a lot of adjustments if you want to tweak Deluxe HSR-42 Mikuni carburetor 1999 to present Twin Cam, Note: Uses your stock throttle cables. 0 Members and 1 Guest are viewing this topic. I know I'm MAYBE a little rich with the 25 pilot and maybe the 70 accelerator pump could drop to 60 but this setup seems too lean. 00 AUD – $ 1,795. May 10, 2000 · The Mikuni choke cable is more flexible and less likely to jamb. For the main system, it explains how to tune the jet needle to balance the air Feb 10, 2003 · Tuning the HSR42/45/48 Carburetors Eagle parts as a “reality check. Swap pilot jets only if you need to, per the tuning manual idle section. I'm just tuning my hsr 42 on my 1250 build with 570 cams and came across this. And the irst step in this procedure is to adjust the air screw ir the best idle. Adjustments (See The Manual For Details): Adjust the accelerator starting point so that the pump starts working immediately. These are the real deal! 5 Circuit adjustable carb Available in standard or highly polished finishes HSR Mikuni 42mm Smooth Bore Carburetor For Harley Big Twin. Please Note: Other than exact replacement OEM carburetors, all Mikuni Aftermarket Carburetors and Tuning Components are sold “As Is” for Off Road / Racing Use Only and are not intended or approved for use on vehicles operated on Public Roads or in Locations where applicable engine tampering and anti-pollution laws apply. HS42/029-A Close (Idle) Cable, 1970 to 1995, 38 inch screw-in type. The Mikuni HSR carburetors are simple bolt-on horsepower for all Harley-Davidson Big Twin, Twin Cam, Sportster, and Buell motorcycles. Mikuni HSR42,45 and 48 Carburettors 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. Still, it is best to check to be sure the cable is installed correctly. You can also find jets and parts easily. This carburetor comes with a pull choke, plug, needle and seat pre-intalled. other → Top types Binding machines Boards Calculators Correction media Desk accessories & supplies TK-1 HSR Carburetor Total Kits Installation & Tuning Manual HSR42 Kits: #42-8 ’84 - ’99 Evo Big Twin #42-19 ’99 - present Twin Cam Jul 3, 2022 · Need help with a HSR42 carb. However, more questions come to mind. Change nothing else; be sure to use the Harley plastic nut, not the Mikuni nut. The main system 4. -read the manual 20x and scoured the internet. Unused Mikuni sticker included. The kits come with simple installation and tuning instructions. adjustment and the occasional main jet change. If you have an intake leak it will skew all your settings. for Harley Davidson FXD Dyna Super Glide Custom 1995 This Mikuni HSR42 Easy Kit suits all Harley Davidson Shovelhead models. Started by timvan, March 25, 2009, 05:58:02 AM. 5. 00 AUD; Mikuni HSR42 Kit Harley Davidson Shovelhead (LH-For use w. This document provides instructions for tuning a Mikuni HSR42/45 carburetor installed on a Harley-Davidson motorcycle engine. . This installation instruction set applies to the Rivera-MIkuni HSR42 carburetor kits for 1970-1984 Harley-Davidson "Shovelhead" Big­Twin & 1971-1985 Iron Head XL motorcycles. Mikuni Tunning Manual This manual provides detailed instructions for tuning Mikuni HSR 42 45 carbs to match aftermarket parts that may be installed on your machine. Mikunioz is the official agent and distributor for Mikuni carbs in Australia. Im pretty experienced with pumper carbs Mikuni HSR42 (TM42-6) or HSR45 (TM45-2) pre-jetted flat slide carburetor with roller bearing slides, polished or standard finish; HS42/001 Air box adapter with OEM bolt pattern; HS42/003 Adapter o-ring; HS42/070 Spacers ; HS42/071 O-rings; HS42/072 Gasket, air box; N100. The number one performance carburettor now slips onto your Harley using the original throttle cables. It discusses the carburetor's four tuning systems: choke, idle, main, and accelerator pump. Mikuni HSR 45 Supertrapp supermeg exhaust 20 disk open end, Daytona twin tech single fire ignition 1005s HSR42/TM42 Parts List. Search for EvilTyrant blog, by Joe This tuning manual provides instructions on how to tune your Mikuni HSR 42/45 carburetors. 95" Keith black 9. Mikuni HSR 42 45 Carburetor Evo Twin Cam Instruction Manual Nov 14, 2019 · That would suck to try jetting and tuning a carb with it's own style jet. Just upgraded my carb on my 94 softail from a stock cv to a mikuni. 5:1 corrected, the Mikuni HSR42 carb has 162. It describes the carburetor's four tuning systems and their associated throttle ranges. Plugs were fine before this work was done. 5:1+, S&S . A. 5 to 30 Main Jet Std. Mar 14, 2024 · Hi everyone this is my first post on here. It includes information on adjusting the idle, main, and accelerator pump systems, as well as troubleshooting tips for common issues. I lapped in valves and replaced rings on my 1988 1340 Harley Softail . 95: CC23445: Deluxe HSR-45 Mikuni carburetor 1999 to present Twin Cam Note: Uses your stock throttle cables. A float level that is too high can make fine tuning of the idle circuit impossible. It includes clear diagrams and text to assist you in optimizing your machine's performance. how to adjust them to factory, base specs, and a desc Sep 6, 2017 · :chopper: I have a Mikuni HSR 42 fitted to my 2003 FXD Twin Cam the engine has been bored to 95'' (1550cc) has Andrews TW27 cams, the heads have been ported, flowed and cc'd to street port plus spec with big valves to match the cams, compression ratio is 9. Watch & learn why Mikuni's HSR42, HSR45 & HSR48 carburetors are some of the finest carburetors produced today. Mikuni correctly adjusts the floats during assembly but they may be acciden-tally bent out of adjustment during tuning or other handling. It includes clear diagrams and text to help you achieve the best performance. for Harley Davidson FLH Electra Glide 1969-1964 . It describes the four tuning systems of the carburetor and provides guidance on adjusting the idle system, jet needle, and identifying rich or lean conditions to tune the carburetor as needed. Mikuni's HSR42, carburetors are the finest VTWIN carburetors made today. With the CV, I was used to some "small jumps" and hesitation when in fist gear and small throttle. Feb 1, 2007 · Genuine Mikuni HSR42 HSR 42mm Polished Performance Pumper Carburetor TM42-6PK by Niche Cycle Genuine Mikuni HSR42 42mm Accelerator Pump Performance Carburetor TM42-6 by Niche Cycle Supply Carbman HSR42 Easy Kit Carburetor 42mm, Replacement for Evo Twin Cam 42-18 for Mikuni Carburetor HSR42 Carb Jun 23, 2024 · -changed from HD to Mikuni choke cable and back a few times. Sounds like Parko had some tuning challenges but worked through them. However, since many Harley-Davidson motors are often highly modified, alternate tuning settings may be required. Ran a tank and found a very small mileage improvement. Nov 20, 2024 · Mikuni HSR. Don't fall for the cheap knock offs. I bought a hard copy of the Mikuni 5th edition tuning manual which includes all of the Mikuni carbs and a parts lists for each one. Started by PC_Hater, April 17, 2017, 01:36:06 PM. We have a link to the Mikuni Tuning PDF Below. 1990-95 style throttle cable cables are required. Mikuni HSR Smoothbore Carburetors. Here what I have done: replaced the float valve and seat, and adjusted the float level to 18mm. MIKUNI PAT UPGRADE: INTRODUCTION Installation of the Mikuni PAT Upgrade kit is straight-forward in that no special or unusual procedures are required. Mikuni sets the air screw two turns out during assembly. 604-155 Main jet for fine tuning; N100. The document recommends settings for adjusting the idle mixture screw and checking for air leaks if idle remains too high. 00 AUD; EFI Injection to Mikuni HSR Polished/Chrome 45 Conversion Kit, Harley Twin Cams $ 1,875. R. Turn on the fuel, and moments later fuel will begin dripping out of the overflow. HSR 42 carbs – May 1999 to present: HSR 45 carbs – April 2000 to present HSR 48 carbs – All: Click here or on link above for (earlier versions – LH throttle) HSR 42 carbs – 1994 to April, 1999: HSR 45 carbs – up to March 2000 Feb 26, 2022 · Found HSR Tuning Manual pdf. I virtually got nowhere. These carburetors are set up and jetted properly for most applications, but may require alternate tuning settings for highly modified motors. I think ive got my air screw and idle set pretty mint, as well as my acc pump. By comparison, a Mikuni HSR42 will easily support 110hp, an HSR45 will easily support 130hp, and we've made over 150hp using an HSR48. 00 AUD; 45-5 Mikuni HSR 45mm Easy Kit for Harley Davidson $ 595. Mikuni HSR 42/45 Owner's Manual 1997 Kits avai, installation, tuning w/ STICKER | eBay Want to know what those screws and jet needle slots do? Tuning Mikuni piston slide carburetors, the basics. mikuni. Unfortunately, few manuals get into the hands of bike owners simply because the installer fails to give it to them. 95 any carburetor, the HS40 is no exception. Last year late in the season I invested in an A/F ratio gauge kit. 48-2 Mikuni HSR Kit (Natural Finish Carb, Jets & Mounting Flange) $ 595. Mikuni HSR Carburetors Easy Kits. The Mikuni HSR smoothbore flat slide carburetors provide unmatched throttle response and power output, and is easy bolt on horsepower for all Harley-Davidson Big Twin, Twin Cam, Sportster, and Buell motorcycles. Mikuni HSR Tuning Manual. Figure 1: Harley nut with Mikuni Description. Quick Links. 8 pounds : Item model number ‎TM42-6 May 10, 2000 · Remove the Mikuni spring and plunger from the Mikuni carburetor. Adjust the carburetor on the non-running side by the same amount The document provides tuning instructions for Mikuni HSR carburetors, noting that the carburetor may require tuning to suit an individual engine depending on modifications like exhaust systems. Apr 7, 2011 #1 Hello I would like to tune Mikuni HSR 42 carburettor Description Related Items Mikuni carburetor 42mm for Mud Buddy outboard motors with a single carb kit installed on a large block vanguard engine. 1"W x 3. Du hast zur Zeit mehrere Probleme, oben fehlt Leistung sprich Sprit und unten und in der Mitte läuft sie zu fett. The idle system 3. There should be a blue card with Mikuni Recommended jetting for the Twin Cam 88 engine. 00 AUD 45-5 Mikuni HSR 45mm Easy Kit for Harley Davidson $ 595. 6. These uniquely designed kits utilize your stock throttle cables for a quick install, and to retain your motorcycle's original appearance. It also discusses identifying May 5, 2007 · hsr 42 jetting I just did a overhaul on my carbed 01 flht as follows. you may need to lower(if rich)or raise( if lean) the jet needle . The pilot jet Feb 4, 2020 · Mikuni Carb Installation and Tuning Instructions . MAXIMUM adjustability to dial-in your ride to get the optimal performance, throttle response, and appropriate AFR. Tuning Manual. Air screw are at the bottom back of the intake bell. After testing with the stock setup, we installed our Dual Mikuni Carb Kit with 42 mm HSR carbs. com; click on the picture of the carb and click on the hot link “Manuals”). CV or S&S Air-Filters) $ 925. Easy to get to even with the a/c on. there's more but just say fast and strong! Apr 21, 2012 · A short while back I'd tried going up on the main jet for my Mikuni HSR42, from 165 to 170 (17. May 23, 2013 · Past week I installed the Mikuni HSR-42 Easy Kit in my 2003 Road King. Here's what I used: 1) Mikuni HSR 42-6 carb. Most hiccup problems I see with these are from the accelerator pump not being adjusted correctly. While there may be some Mar 18, 2011 · For years I struggled for a Nirvana tune using Mikuni's manual and their techniques. If the idle is too low, adjust the idle up until the bike is idling on one cylinder. ClassicCycles. Apr 27, 2020 · hsr-tm42-tuning-t19353. for Sportster TM42/11–60 Standard TM42/11–70 WWW. Das ist jetzt recht grob dargestellt da im Manual noch viel feiner erklärt. The standard body gives the HSR42 a natural look for stock bikes. It could be in small or large letters. Going fast has never been so easy. Max allowable turns out from fully seated is 3 2. Blog; EC Shop Services; Shipping Policy; Terms Jan 8, 2016 · Mikuni HSR42: 213 CFM Mikuni HSR45: 237 CFM Mikuni HSR48: 270 CFM The CV40 is actually the stock carburetor on Harley Davidson motorcycles, but I feel it is similar enough to the oem Rhino carburetor to show the restriction from the internal butterfly versus the flat slide. ” When re-tuning is required, it usually involves small alterations to the idle and/or main system. Then changed to 20mm. any carburetor, the HS40 is no exception. Shop Carb Parts : https://www. Mikuni’s HSR42 carburetor has been fitted to many thousands of Harley-Davidson motorcycles by moderately experienced owners. The following pages supply enough information to make such alterations relatively simple. I'd make observations, adjustments and then go to a dyno for 3 pulls. Weber Specialties are now offering Aftermarket Mikuni HSR 42 Harley Davidson Carburettor. In this video, I FINALLY get a popular requested video done. A huge number of vintage bikes come equipped with the good old round-slide Mikuni carb. for MIKUNI HSR48 New Style . Check out that manual dude. In the Mikuni manual we can read: "The pilot air screw is set at two turns open from the factory. I suggest you confirm what needle, needle jet, nozzle and main jet are in that carb and then base line that carb to its factory configuration. The manual is extensively detailed, featuring numerous pages with in-depth photos and diagrams. RPM's may not change when in the sweet spot for mix for 1. Previous topic - Next topic. Carb Kit : 42-11 All Carbureted 1200 Buells. 00 AUD – $ 935. Mar 23, 2009 · installing and tuning a Mikuni HSR42 carb on my 1340 EVO - FXR4 (with pics) Started by fxr4mikey, March 23, 2009, 08:01:17 AM. From your vintage motorcycle to modern Mikuni carburetor adjusting and tuning. It's very easy and worth doing to eliminate that as a possible source of problems.   The list of parts shown is specific to the carburetor listed, and should not be assumed to fit similar models, especially older carburetors, and Mikuni carburetors that came as an OE part. This is the position we have found to be correct most of the time. If you have doubts, check the float level and re-adjust if needed. 2 Tuning the HSR42/45/48 Carburetors Eagle parts as a “reality check. From the Mik HSR Tuning manual (available for download from the Mik website): Mikuni HSR42-48 Tuning Manual (PDF) - Revised 02/01/03; Mikuni HSR Carburetor Total Kits - Installation Instructions (PDF) - Revised 01/22/02; Mikuni HSR Carburetor Sportster/Buell - Installation Instructions (PDF) - Revised 01/23/02; Mikuni HS40 Tuning Manual - Explored View and Parts List (PDF) Tuning Tips & Manual Downloads . Mar 16, 2004 · The Mikuni tuning manual has these tips: 1. 18mm. where they are used as a direct replacement for SU or ZS carbs. Mikuni HSR smoothbore carburetors give superb throttle response, and deliver all the airflow needed for any level of Harley® performance. Idle adjust is the big black cable hanging down with what looks like a Phillips head screw stuck in the end. I am going to discuss the carburetor adjustment and tuning that I have found to work pretty well on the 1999 to 2004 Indian Motorcycles. How to set-up the Mikuni HSR Series flatslide carburetor. (The flow rate May 26, 2016 · How our Mikuni carb handled its first 2000 miles. HSR42 carbs made after May 1999, and HSR45 made after March 2000 use stock Harley-Davidson cables. A word of caution: floats are fragile and easily damaged. Install the new assembly into the Mikuni. Figure: T1 HSR TUNING SYSTEMS: The HSR42/45 carburetor is divided into four interdependent systems: 1. At the end of the day the correct float height is the one that gives you the correct fuel level regardless of what spec is in the manual. Fuel screws are a total different animal and on the top in the front of the carb. Mikuni includes a couple of main jets, bracketing the one installed. Easy-to-adjust idle, no screwdriver needed! 3. org Tuning the HSR42×45×48 Carburetors Your Mini HER comes from the factory with the tuning parts we found to work with We are not affiliated with any brand or entity on this form In this video Mikunioz explain the basic procedures for tuning a Mikuni VM Roundslide Carburetor. The Mikuni HSR42 carburetor is a popular choice among motorcycle enthusiasts for its performance and ease of tuning. A properly jetted Mikuni HSR carburetor also delivers excellent fuel mileage. 5 idle jet, #50 accelerator nozzle, #97 needle/ clip in the middle groove) to control detonation under load in the upper gears- Approx 2200-3100 RPM, rolling on full throttle to pass or accelerate in Jul 27, 2017 · The kit is called the Mikuni Mileage Kit and there are separate kits for the HSR42 and 45 carburetors because the needles are different. 2) #145 main jet $7 3) #25 pilot jet (my HSR 42-6 carb came with the jet already installed) Wow ok. 1"D x 6. They give superb throttl Jun 10, 2011 · For an in-depth look at the popular Mikuni carburetor, look no further than this essential manual from Sudco International ÿ ÿThis edition is a compilation of official Mikuni tuning manuals combined with years of hands-on tuning experience ÿ ÿTroubleshooting, synchronization, jetting - it's all here, complete with exploded views and parts This document discusses Mikuni BS34 carburetor tuning. Sudco International is the world's leading source for Mikuni Carburetors, Parts and Tuning Components for any motorsports application. its CV carb is being rebuilt, The problem im having is the bike idle's fine but when in this thread in this sub-forum in the entire site 1) The document provides tuning instructions for Mikuni HSR carburetors used on Harley-Davidson engines. Aug 13, 2024 · Tuning Tips Mikuni Carburetors. Jim2, Thanks for the heads up on Craigs List, looks like a good deal. This Mikuni HSR42 Total Kit suits all Harley Davidson Shovelhead models. It is a copy or clone of the Mikuni HRS42 Harley carburetor. The Mikuni Group manufactures superior products for a wide range of industries, including automotive, commercial vehicles, powersports, general purpose, household and safety, as well as export and sales of aerospace parts. That HSR42 was pretty close to perfect right out of the box for a mild 80". I'd start with the 50 squirter and have the squirt start almost immediately, you will want the pump cam basically touching the pump rod. HSR 42 - 45 - 48 Carburetors & S&S Super E . Adjust the idle up the same amount on the other carb as well; Start the bike. Mikuni HSR Easy Kits offer bolt-on performance with pre-jetted and ready-to-run carburetors. Too lean condition diagnosis: no load, rev the bike - engine speed increase is slow or irregular 4. Adjustments (See The Manual For Details): 1. 00 AUD; Injection to Mikuni HSR 42 Conversion Kit, Harley Davidson Twin Cams $ 1,775. 5mm). Tuning the HSR42/45/48 Carburetors Eagle parts as a “reality check. Start with the idle. These instructions are primarily for the dual carb kits as used on Volvo 544, 1800, 122, and 140, MGB's, TR4's, etc. Feb 10, 2003 · Tuning the HSR42/45/48 Carburetors Eagle parts as a “reality check. Mikuni Parts! Carb Kit: 42-10 1994--Present Sportster. Can access main jet from the bottom of the carb without having to take float bowl off. In the end it sounds like he was happy with it. I actually did the throttle position marking as suggested in the Mikuni manual. For Mikuni carburettors and all associated parts Mikunioz is your first port of call. 00 AUD; 42-8 Mikuni HSR Total Kit for Harley Davidson Evo Bigtwin Models $ 895. Our favorite carburetor for your everyday performance needs. This is a comprehensive factory service repair workshop manual for the Mikuni HSR42 45 48 Smoothbore Carburettor. Oct 31, 2016 · Manual Decomp Valves DTT TC88 Ignition module Mikuni HSR42 Carb K&N Air Filter SE Adjustable Push Rods Jim's Steady Roll Tappets Andrew's TW37N Cams SE Hydraulic Roller Chain Cam Support Plate with S&S Hydraulic Tensioners & ERT Superpump Kit SE Oil Pump K&P Racing Reusable Oil Filter Energy One Clutch May 21, 2005 · mikuni make sure the accelerator pump is adjusted correctly and check the idle miture screw. html Interesting read. org HER Tuning Manual Revised 02×10/03 2 www. 5to 1 pistons-Andrews 26g(gear drive)cams,Feuling oil pump and cam plate, hsr 42 mikuni,Rinehart true duals. Cleaning and Rebuilding our Mikuni HSR 42mm carburetor on this Harley Fxr. 4. Oct 2, 2010 · Mikuni HSR42 Tuning. Jul 28, 2022 · MIKUNI HSR42 REBUILD INSTRUCTIONS >> DOWNLOAD LINK MIKUNI HSR42 REBUILD INSTRUCTIONS >> READ ONLINE mikuni hsr 42 manual mikuni hsr42 diagram mikuni hsr42 accelerator pump adjustment mikuni carburetor manualmikuni carburetor rebuild instructions mikuni hsr42 tuning manual mikuni hsr42 jetting chart mikuni hsr42 accelerator pump not working Dec 11, 2016 · The HSR 42 is easy to find used from the Harley guys, so it's very cost effective. Be very careful when adjusting the float. Feb 5, 2023 · This is a fairly detailed look at a Chinese "Kipa" carburetor. These are mostly sold as Harley Davidson carburetors. This Mikuni HSR carburetor kit is designed to be a bolt-on application, and as such, is set-up and jetted properly for most applications. A clean Mikuni carburetor with a properly adjuste The word Mikuni ought to be printed somewhere on the carburetor. Tuning your carburetor after installing aftermarket parts is essential for maintaining optimum performance. 00 AUD; 42-18 Mikuni HSR Easy Kit, Harley ’90up Evo/TwinCam Bigtwins Throttle Cables - early HSR 42/45 HSR42/45 Carb Kits from 1994 to1999 required Mikuni throttle cables. We can jet your carbs to your specs or we can pull from our 30 plus years of carb tuning and get you set up. Jun 16, 2023 · Fitment: for MIKUNI HSR42 New Style ,for MIKUNI HSR42 Old Style ,for MIKUNI HSR45 New Style ,for MIKUNI HSR45 Old Style ,for MIKUNI HSR48 New Style For Harley Davidson FLH Electra Glide 1969-1964,For Harley Davidson FLH Electra Glide 1970-1985,For Harley Davidson FLST Heritage Softail 1993 For Harley Davidson FXD Dyna Super Glide Custom 1995-1999,For Harley Davidson FXDWG Dyna Wide Glide 1993 Feb 8, 2017 · Put the stock needle back in in the middle notch, along with a 25 pilot jet and a 165 main jet. Mar 22, 2024 · This Mikuni HSR carburetor kit is designed to be a bolt-on application, and as such, is set-up and jetted properly for most applications. The Mikuni Tuning Manual helps make jetting alterations and adjustments an easy matter. But for 75 bucks (round here) you can put it on a dyno and in 2-3 pulls have it done. Use care when grasping the float and pay attention to how much pressure you exert on the float while adjusting it. Anyone running this lean? I could POSSIBLY see a 22. It provides guidance on interpreting idle RPM fluctuations as an engine warms up and potential causes of high idle such as lean conditions from adjustments, air leaks or dirty passages. Mar 22, 2024 · I recently purchased a Mikuni hsr 42 clone for my 2001 1200 sportster. Just off the press is their new 96 page 5th Edition Sudco Mikuni Carburetor Manual featuring the complete line of Mikuni RM, VM, HSR, HS, TM, TMX and BN Carburetors and Fuel Pumps with Parts Breakdown Diagrams, available Tuning Components, Tuning and Setup Jan 22, 2002 · The฀Mikuni฀Tuning฀Manual฀helps฀make฀jetting฀alterations฀and฀adjustments฀an฀easy฀matter. (have one on order). this video shows a detailed description on all the adjustments. Please note that there is no point in attempting to tune any carburetor May 6, 2018 · The kit is called the Mikuni Mileage Kit and there are separate kits for the HSR42 and 45 carburetors because the needles are different. go to mikuni web site and download the tuning manual Carburetors Carburetor Kits Mikuni Parts By Category Mikuni Parts Finder Amal Jetting & Tuning Flanges & Boots Accessories Rebuild Mikuni Harley Davidson HSR42 Mikuni SBN Tuning Manual. Be careful to only gently tighten the plastic nut. Features Feb 21, 2020 · The HSR-42/45/48 for big twins all came with a -25 intermediate jet. Its says: Pilot Jet Std. 640 cam, . So far so good has much improved the power and throttle response. The Mikuni HSR Tuning Manual helps make jetting alterations and adjustments an easy matter. The HSR carbs are generally tuned pretty darn close right out of the box. Carbs will have one or TM-1 Tuning Manual For HSR42/45 CARBURETORS Revised 5/10/00 TM-2 Tu n i n g the HSR Your Mikuni HSR is fitted with the tuning parts we found to work with the great majority of engine performance modifications. The air screw’s purpose is to fine-tune the idle mixture. ฀exempt,฀are฀not฀legal฀for฀motor฀vehicles฀operated฀on฀public฀highways฀in฀ If adjustment is needed, do so very carefully and make very small adjustments. The HSR 42-45 48 mm carburetors made by Mikuni are easily tunable for most any motorcycle engine. Still can not get the valve to shut completely. 00 AUD Apr 7, 2011 · Tuning Mikuni HSR 42. For use with all mild to highly modified engines our carburetors come with extra jetting for fine tuning. spring has sprung!! 2024. genuine mikuni hsr 42,45 & 48 tuning manual. pul kgqm genx tlglhr vdinx wuvjqb cfihoejaa xems zjab qqlwf xbtbc culbt gjlkz nbdnj jwf