Mikuni hsr42 float height. The genuine Mikuni bowl gaskets are made from a rubber polymer that remains pliable even after many years of use. Bill Blue replied to me that 14 mm is the stock float height. Install the nut, spring and plunger onto the cable. October 02, 2010, 06:02:11 PM. HSR42/45/48 Tuning Manual (3. I found at some point what the float should weigh. Sold exactly as shown. The pilot jet Mikuni float valve needle assembly. 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. 18mm. Nov 26, 2023 · Mikuni powerHow to set-up a mikuni hsr carburetor. so the increase in Hp is not from carb design but from carb size. KHS-016 for Mikuni HSR 42/45 mm Carburetors. This measurement is taken from the carb casting face to the top of the circumference of the round plastic floats. It is fairly tricky to measure. As a manufacturer and supplier we are unable to provide any repair or diagnostic advice. Dyna Convertible - FXDS-CONV • 1995-1998. Jun 23, 2024 · I have a Mikuni HSR42 on it jetted: 160 main Reason for asking is even if the float level is correct a leaky inlet valve will negate that float height setting and Oct 17, 2010 · Did you drop it below the 18mm that Mikuni specifies for float height? 2000 FXSTB-98"-Dan Vance heads-Andrews 37G and S&S gears-R&R cam plate-HD HV oil pump-Baisley pushrods-Mikuni 42MM HRS-Dynatek Ignition module-Python exhaust-TP Pro Vent rocker box-Hillside tune Carburettor Float Heights (MM) Carburettor Descriptions Float Height (mm) CRS All CR Smoothbores 14 FCR All FCR Carbs 9 PE20 PE20 19 PE22 PE22 19 PE24 PE24 19 PE38 PE38 22. Mikuni hsr42 easy kit harley davidson xl 1000 sporty (shovels with mods May 10, 2000 · The Mikuni choke cable is more flexible and less likely to jamb. Replaced float and still happening. I set the float height. Find Mikuni Floats HSR-42 Carburetor Model and get Free Shipping on Orders Over $109 at Summit Racing! Make sure that your carburetor has the fuel that it needs with these Mikuni carburetor floats. KHS-032 Chrome Carb Top 48 w/Mikuni logo Jetting Parts High speed (main), low speed (pilot) jets, jet needles and accelerator pump nozzle for the HSR42/45/48 carburetors. Includes Original Mikuni Part Numbers: 616-94028 Float Bowl Gasket, 786-27001-4. The build quality is far better than modern Amals. But some Mikunis can reveal the fuel height while on the bike. Oct 23, 2016 · This Genuine Mikuni HSR carburetor Float Bowl kit contains Nine (9) Genuine Mikuni components for your HSR42, HSR45 carburetor. With the CV, I was used to some "small jumps" and hesitation when in fist gear and small throttle. 6. 1984. Tab on the float arm comes set at a particular height from the factory, but the float arm is fragile and sometimes the tab needs adjustment to keep too much or too little fuel from entering the float bowl. Carburetor Width 98mm. Mikuni Carb Kit Installation and Tuning Instructions - Updated 2/4/20. Fitment for Mikuni HSR42 Smoothbore Carburetor Easy Kit. SKU: MAX_HSR_42 The Maxair HellCat : Mikuni 42 Flat Slide HSR Carburetor - Yamaha Road Star Special float needle valve/seat set- to run stock fuel pump ; Mikuni HSR series float assembly. These instructions are primarily for the dual carb kits as used on Volvo 544, 1800, 122, and 140, MGB's, TR4's, etc. VM28/486-(size) Pilot Jets , sizes 15 to 50 N100. Members The float system is important because it affects all other fuel delivery systems on the carb. The thing tho is, sometimes it wants to leak out the overflow like the float is either sunk or stuck. Universal Fir May 23, 2013 · Past week I installed the Mikuni HSR-42 Easy Kit in my 2003 Road King. Still, it is best to check to be sure the cable is installed correctly. That is what you are doing with the clear tubing. Jan 22, 2002 · Figure 1: Harley nut with Mikuni spring & plunger Figure 2: Choke cable adjustments Mikuni Cable (Evo Kits: 42-8, 45-2 & 45-3): 1. The popular Mikuni HSR42 Carb Kit is already an industry performance standard for Sportsers, Buells and stock Big Twins by offering a 25% increase in power and […] Tuning Tips & Manual Downloads . Tank is full with new gas, petcock is on the "on" position, fuel line and fuel filter to carb is free and clear. Updated: May 26, 2016. Jan 19, 2019 · How to set-up the Mikuni HSR Series flatslide carburetor. RPM (x 1000) H o r s e p o w e r Stock Twin Cam HSR42 Kit 10 0 20 30 40 60 70 80 T o r q u e (f t. Be careful to only gently tighten the plastic nut. Then changed to 20mm. float height, cables, jets, leak Tm42-6 mikuni hsr 42 & 45 rebuild kit khs-016Mikuni harley davidson shovelhead hsr42 xl sporty 1000 kit easy carb mikunioz sportster. 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. Genuine Mikuni. Maximum horsepower is increased from 57. The results were quite impressive, just bolt on, no adjustment at all and I noticed a really smooth driving. 2 Needle Valve (4. Leaking from the overflow tube or bowl? MIKUNI HSR42/45/48 FLOAT Dec 23, 2019 · Hoping to cure this I changed the float chamber needle assembly with a new one - with no improvement. 00 AUD; Jan 23, 2002 · EK-5 HSR PARTS LIST # PART NO. Members save 10%. The Mikuni floats are made from materials that meet or exceed OEM specs and can withstand your carburetor's harsh fuel environment. If you have doubts, check the float level and re-adjust if needed. Feb 10, 2003 · Tuning the HSR42/45/48 Carburetors Your Mikuni HSR comes from the factory with the tuning parts we found to work with the great majority of engine performance modifications. 6 MB) revised 02/10/03 HSR48 Exploded View - See Product Catalog for Exploded View & Parts List HSR42 Exploded View - See Product Catalog for Exploded View & Parts List HSR Easy Kit Installation Instructions (2. Remove nut, spring and plunger from the Mikuni. Carburetor Height 170mm. Here what I have done: replaced the float valve and seat, and adjusted the float level to 18mm. General Tuning Information. 02 Roadglide 88 motor, I have a 160 main jet, #20 pilot jet, -97 786-27001 Mikuni Needle & Seat- Viton tip (HSR 42 & 45Carbs) $ 38. Niche Cycle Supply (159631) 99. 776-39005 Top Cover Screamin’ Eagle Mufflers, the HSR42 Easy Kit adds 25% more horsepower to the output of Harley’s Twin Cam motor. Keep your carburetor fueled at the correct levels with Mikuni Jul 14, 2021 · I have an HSR. I put a new float needle and seat in it. With its 42mm venturi, the HSR42 flows 20% more air than the HS40, making the HSR42 an ideal carburetor for Evolution Big Twin and Twin Cam engines employing other performance modifications such as big bore kits, cams, pistons and an exhaust system (Mikuni still recommends the smaller HS40 carburetor for stock and mild tuned Evolution Sportsters). Regarding the float adjustment : If you change the float height by x mm it will change the fuel level by the same x mm. Apr 12, 2011 · I have a 2006 custom chop with an Evo motor and a Mikuni HSR carb. Super Sucker. Part H1694 fits the following machines. Still can not get the valve to shut completely. As long as I roll the throttle on slowly it runs pretty good but that's not much fun. 2 stock) and C2=0412-B Float Bowl Screws. ” When re-tuning is required, it usually involves small alterations to the idle and/or main system. . The 42 HSR, while not as popular, is the optimal Aug 13, 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 Feb 13, 2017 · This is the first of our tutorial / tech tips series. However, the large number of differing after market exhaust and air cleaner systems makes it virtually impossible to accommodate all possible combinations with one carburetor set-up. Then measure vertically up from the mating face of the float bowl to highest point on the float (in line with the main jet). Find the Mikuni HSR42 Smoothbore Carburetor Easy Kit at Dennis Kirk. A float level that is too high can make fine tuning Feb 27, 2008 · The float height for a Mikuni VM32 twin float is 21mm plus or minus 1mm. 5 Float valve 2. Tips And Tech. Most vintage, OEM Mikuni, round-slide carbs, have a pair of bronze-alloy floats soldered to a float arm. 786-27001, 78627002-1A-4. 4. Please note that there is no point in attempting to tune any carburetor Apr 25, 2024 · (Genuine Mikuni HSR42 HSR45 9 Piece Carburetor Float Bowl parts kit This Genuine Mikuni HSR carburetor Float Bowl kit contains Nine (9) Genuine Mikuni components for your HSR42, HSR45 carburetor. Download: for sale Website: Tags Mikuni HSR42 Air Cleaner Adater Tags Thin Wall Transparent Float Bowl , , , , , Jan 8, 2016 · Mikuni HSR42: 213 CFM Mikuni HSR45: 237 CFM 3. That is not an overflow hole, as it is at the bottom of the bowl. 7 MB) revised 01/22/02 It’s simple to identify a Mikuni Carburetor by looking at the top view of the float chamber cover, the cover gasket of the float chamber or the jet chamber cover gasket. Oct 2, 2010 · Mikuni HSR42 Tuning. May 19, 2023 · Remove float and valve and clean the seat wit a Q tip and Brasso. Mikuni correctly adjusts the floats during assembly but they may be acciden-tally bent out of adjustment during tuning or other handling. Fitment for Mikuni HSR42 Smoothbore Carburetor Total Kit. Install the assembly into the Mikuni HSR carburetor. 1% positive; Float Height. 7 ft/lbs. Check Details. When you click on one of the manuals in this list, Adobe Reader will load and proceed to Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust. The float bowl resevoir is not filling with gas therefore the bike won't run. 8 to 72. Small hose leaking alot sometimes the bigger hose overflows and dumps shih ton of gas. The carb came with everything pre-set for my DBD34 Gold Star. The carb still floods and does not start so well now. Free shipping on orders over $100 Mikuni HSR42/45/48 Float Assembly Oct 21, 2015 · Mikuni’s smoothbore HSR42E. The float in the Mikuni carburetor sets the height of gasoline that rests inside the bowel. Courtesy of Mikuni Mikuni American’s popular HSR42, HSR45 and HSR48mm Smoothbore Carburetor Kits are known world-wide as among the best performing carburetors for American V-Twins. May 26, 2016 · Testing the Mikuni HSR42 Easy Kit for Sportster. Skip to Content . Fuel float level is critical to proper operation of any carburetor, the HS40 is no exception. Jan 23, 2011 · I am just sorting my 351/TM 33 pumper combo out also. The air screw’s purpose is to fine-tune the idle mixture. I cover pre-installation set-up, jets, float height, leak testing and choke cable installation. l b s) 10 0 20 30 40 50 60 70 80 Mikuni carburetors, commonly installed on motorcycles ranging from small single cylinder dirt bikes to V-Twin motorcycles, have a plastic float to regulate fuel consumption. Mine was right at the limit so I ground some of it off, furthest point from the pivot and on the top. where they are used as a direct replacement for SU or ZS carbs. Please consult a factory service manual or qualified motorcycle technician. The CV is more forgiving. Turn on the fuel, and moments later fuel will begin dripping out of the overflow. 00 AUD; N198008-40 Needle & Seat / Float assembly DR650, some KTM LC4 and others $ 55. Float Height 18mm Mikuni HSR 42/45/48 Idle Adjuster Screw - Short Feb 10, 2003 · Tuning the HSR42/45/48 Carburetors Eagle parts as a “reality check. This video shows how to set the float height on a DS80 carburetor and changing a Mikuni main jet from a Mikuni Short Idle Screw Adjuster For HSR 42 / 45 Carburetor $ 19. The 42 mikuni is 42mm. Mikuni's popular HSR42/45 Flat Slide Performance Carburetors for American V-Twins have been on the market for a number of years now, and for some older installations it may be time for a maintenance check, cleaning and rebuild. 95. 3 Needle & Seat if electric fuel pump is used . 99 FREE delivery Oct 8 - 10 HSR42 HSR45 HSR48 Technology Carburetor Carb Choke Cable Replacement for Harley Davidson HD HSR CV MK MIKUNI HSR42 HSR45 HSR48 Carburetor 426232 990-662-002 3. Mikuni Long Idle Adjusting Screw For HSR42 Carburetor $ 16. 99 $ 19 . More Tips And Tech. Download and read or print these documents by clicking on the titles below. Pictured product appearance is subject to change. Genuine Mikuni float bowl for new and old style HSR 42/45/48 carburetors. 25. Fits Mikuni HSR 42 and 45, and SE HSR 42 smoothbore carburetors used on Harley motorcycles only. Disc Glide - FXRDG • 1984. I haven't checked my float yet. Hoping someone has had similar carburetor issues An aftermarket carburetor from Mikuni will. 2. This gasket fits all Mikuni HSR carburetors. I'm looking for the right set up for a HSR 42 Mikuni. 0 MB) revised 01/19/12 Total Kit Installation Instructions (1. Part H1695 fits the following machines. Carburetor Float, Powersports, Phenolic, Center Hung Bowls, Mikuni, HSR-42, HSR-45, HSR-48, Each See More Specifications | Check the Fit Mikuni Floats 859-32027 Mar 2, 2012 · The manual for my 2001 is vague as well. Free shipping on orders over $100 Mikuni HSR42/45/48 Carburetor Float Bowl 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. Apr 13, 2022 · Mikuni HSR42 HSR45 float height setting with gauge to 18mm easy with gauge ‪@CustomCruisersLimited‬ we can supply new carbs spares for Mikuni S&S Keihin Weber Quicksilver certain parts call Jul 3, 2022 · Need help with a HSR42 carb. CW2=0414-B Screw, Top Cover 3. A mechanic friend of mine said that the float height was wrong and re-set it to the recommended 18mm. Mikuni Carburetor Manuals. I read it as- You want to orientate it so the float valve is closed. In your hand/on the work bench this would be upside down from how it sits in the bike. I should mention i switched to a mikuni hsr42 and its been happening since it was installed. Ok, I've read just about every thread and I've tried tuning the carb per the manual but I can't seem to get rid of the severe popping/stumble when I lean on the throttle from about 1/4 throttle on. 3 MB) NOTE: These Manual files are Adobe PDF. Using Mikuni float bowl gaskets ensures an exact fit and proper function in all conditions. Harley-Davidson. 5 PJ PJ 16 PWK28 PWK28 19 PWK33 PWK33 19 PWK35 PWK35 16 PWK35 A/S PWK35 A/S 16 PWK36 PWK36 16 PWK38 PWK38 16 PWK38… Read More » Jul 9, 2024 · Genuine Mikuni HSR42 HSR 42mm Performance Pumper Carburetor TM42-6. 6 out of 5 stars 50 Replace your HSR42, HSR45, or HSR48 float bowl gaskets with only genuine Mikuni parts. Jan 4, 2004 · One thing you or he didnt include in the performance increase was the fact that the 40 CV is really 38mm in throat size. Carburetor Rebuild Kit Float Fit For Mikuni HSR42 Harley HARLEY TWIN CAM EVO BIG TWIN TM42 TM45 HSR 42mm 45mm 48mm Smoothbore KHS-016 $19. 4 to 80. This page lists our Carburetor Owner's and Tuning Manuals. 604-(size) Main Jets , sizes 140 to 240 J8-8DDY01-(size) HSR42 Jet Needles , size 95, 96, 97 and 98, standard in HSR42 is 97. Mikuni TMX 38 Float Height Tool . 2 hp, and maximum torque from 71. Free shipping on orders over $100 Float Height 18mm $332. Oct 23, 2016 · This Mikuni HSR42 HSR45 Carburetor Needle Valve Assy (Float Valve) kit contains three Genuine Mikuni components for your HSR42, HSR45 carburetor. If the tang is lowered too far -- bent down to an almost flush position with the central float bridge -- the float's height, and the fuel level, will increase beyond a safe limit and overfill the float chamber. Includes one each Mikuni Part Numbers: TM36/60 Plunger, VM14SC13/89 Accel pump spring, TM42/05 Float Bowl, 616-94028 Float Bowl O-ring, VM28/254 Drain Plug O-Ring and qty 4) C2=0412-B Float Bowl Screws. 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. Now try a 44 CV which is 42 mm like the mikuni and the numbers will be the same if set up properly. What kind of floats are on your Mikuni? Mikuni uses several types of floats on their aftermarket and OEM carbs. The following pages supply enough information to make such alterations relatively simple. Universal Fir - review specefications carefully The carburetor's internal fuel level is directly correlated to the float height, as determined by the float's tang. The word Mikuni ought to be printed somewhere on the carburetor. Tuning Manual (1. If you set the float too high, you risk overflowing Feb 4, 2020 · Mikuni Carb Installation and Tuning Instructions . Aug 12, 2012 · Not even info on setting the float height. Quantity -+ Add to Cart . 3. Apr 27, 2015 · The other guys are giving you the info for measuring the float height, upside down, which in turn determines the fuel height, which we assume is correct, but can not see. Mikuni HSR42 TM42 42mm Flat Slide Pumper Carburetor Polished Float Height 18mm $425. I think it is worth your persevering with the Mikuni. View attachment 811972. C5=0410-B Screw, Top Cover 2. Street Chopper Staff. 5 and 616-33003. Item description from the seller. I found 14mm on the Sudco web site also. DESCRIPTION 1. Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the Mikuni HSR42 Smoothbore Carburetor Easy Kit. 50. Mikuni HSR42/45 Carburetor Genuine Rebuild Kit .