Keihin fcr 39 float height

Last UpdatedMarch 5, 2024

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26") on the bigger keihin carbs. Also Google search will find 100k threads. Good luck brotha. Sep 30, 2013 · " 900SL fitted with FCR 39 and had spent quite a bit of time tuning then on the road, so he had some prior experience for fitting the 41mm to his 900M. Edited April 12, 2018 by YZ 250F. 024 - clip, jet needle. Write a review. 2x float chamber gasket; 2x top cover gasket; 2x vacuum plate seal; 2x pilot screw o-rings; 1x accelerator pump diaphragm; 1x accelerator Keihin FCR 39 carburetor. fuel pump has been tested. The bike is extremely tolerant on the main and needle taper. Reviews (0) KEIHIN FCR MX39 FLAT SLIDE CARBURETOR WITH ACCELERATOR PUMP &CHOKE. KEIHIN FCR MX39 FLAT SLIDE CARBURETOR WITH ACCELERATOR PUMP. 99. bearings are freshly greased. Thanks!my air filter care: https: EXPLODED VIEW, PARTS DIAGRAM: Keihin FCR racing 28/32/33/35/37/39/41 carburetor # Description Price ; 05: TOP COVER (28-33mm) FLOAT VALVE SEAT N361-03-xxx: € 6 Jan 24, 2024 · The float needle valves seemed to be working properly. b keihin float valve (for press-fit seat) instructions are not included - only tips below The FCR-MX carburetor has many new features to take motocross and ATV performance to the next level. ****STOCK PHOTO SHOWN - PRICE IS FOR CARBURETOR ONLY - THROTTLE Jan 2, 2010 · Install the slide, set it all the way down. Oct 8, 2013 · I have TT Keihin FCR 39 mm carb (kit bought from TT) on my 2008 DRZ400SM. In 100% like-new condition. Install on the bike and make the final idle speed adjustment. My Rides (4) I measured my float height but not sure if I did it correctly. KEIHIN FCR MX 39 CARBURETOR 016-927 (CHOKE, HOTSTART, TPS, ACV) Description. the carb comes equipped with choke, hotstart, tps (throttle and cables are not included in the price shown - sold seperate) Apr 21, 2024 · 3. CHOKE & HOTSTART. 9mm. Smooth bore for maximum air flow. KEIHIN FCR-MX Float Bowl, w/ Leak Jet . PWK General: PWK Carburetors. 2) 1 float seat o-ring; 1 float valve; 3 fuel inlet o-ring; 1 accelerator pump diaphragm; 1 accelerator pump o-ring; 1 accelerator pump u-ring; 1 Jun 15, 2017 · Im in Australia and own the drz400e model which i believe has the keihin fcr 39 carby. " Sep 2, 2010 · It is a complete replacement float bowl, accelerator pump and leak jet that refines fuel flow on Keihin FCR carburetors. all parts are cleaned and inspected. float height has been set. Description. complete kits (220) keihin (116) mikuni (46) Mar 3, 2017 · Hanging idle is a lean condition. For those owning a DRZ power gains from an FCR swap may seem very attractive, until you consider the cost. Your Review. 42. 2 - 4. In the end he ran the same jetting as he had on the SS with 39mm – 160 main, std needle on the sixth notch, 52 pilot jet. The set includes a genuine Keihin float and float pin: Keihin #1052-837 Slide carbs (FCR's) - Float height controls 25% throttle at ALL rpms. ACV for enrichemnt in decelaration. Ussually he manual for yo Nov 25, 2007 · Should I measure float height (16mm per factory manual) between the carb body and the line on the float? Float height adjustment for Keihin PWK. The last technique I used (carb off the bike) was to remove the float bowl and submerge the bottom of the carb into a sink full of water while allowing a steady stream of water to enter the fuel inlet. Extended fuel screw. Has been completely disassembled and ultrasonically cleaned, ready for use. 00 Share this: Carb Repair Kits and Seal Kits A list of our Carb repair kits for Keihin and Mikuni Carbs. including spigots. Keihin FCR 39 carburetor, taken from a 2001 Suzuki DR-Z400E. . This kit fits: Keihin FCR racing carburetors. I then measured the distance x but got a number well out of spec. DRZ400 Jetting for: sea level, aftermarket pipe with open muffler, 3x3 Mod Details: Keihin FCR MX 39 carburetor with choke, hotstart, TPS (Throttle Position Sensor) and fuel pump. please specify carburetor size with your order to receive sticker for the side of your carburetor . 026 - main nozzle. 006 - gasket, top cover. Check that the needles and needle jets are right. Slowly rotate the carb up (towards 12 o’clock) Once the float stops (the weight of gravity), that’s where the height is set – the carb will be close to a roughly 45-degree angle and the bottom pointed Sep 14, 2016 · Shape the backside of the bung to match the radius of the cross over pipe. ****STOCK PHOTO SHOWN - PRICE IS FOR CARBURETOR ONLY - THROTTLE & CABLES ARE NOT INCLUDED Sep 16, 2016 · In this video, I show you the two most common reasons for setting float height incorrect. 1) Correct Float Height. #6. Product no. Budget FCR swap for DRZ400, a new approach. 39. Made in Japan from high quality non-corrosive molded plastic materials it will not succumb to the additives in modern day fuels. . Details: Keihin FCR MX 40 carburetor with choke and hotstart. NEW GENUINE KEIHIN PWK28 Throttle valve 3. 027 - main jet. The 37mm carburetors are recommended PWK General: PWK Carburetors. 00 genuine keihin parts. Note: HTML is not translated! Description. Retail is anywhere from $850 to $1150 depending on who you buy from. keihin fcr-mx valve seat 3. INSTANT THROTTLE RESPONSE AND MORE POWER THROUGHOUT THE THROTTLE RANGE. Apr 16, 2012 · Just showing a little trick you can use to get a proper float adjustment if your manuals adjustment settings arent working for you. It's mostly used now as a pumper upgrade for bikes like a XR400, mainly because it has been proven to be a good carb, and it's slightly simpler and quite cheaper than a FCR-MX. ****STOCK PHOTO SHOWN - PRICE IS FOR CARBURETOR ONLY - THROTTLE & CABLES ARE NOT Keihin FCR-MX Float Valve seat Repair Kit 3. Check the slide plate o-ring. As shown in the video, do not make the adjustment to th Measure 9mm from the float bowl sealing surface to the highest (lowest with the carbs mounted to the bike) point of the float at a 90 degree angle to the sealing surface. KTM 450, 525 (2003 thru 2005) Yamaha 400, 426 (2000 thru 2002) Out of stock. Nov 12, 2016 · Posted November 12, 2016. 359. The FCR and the FCR-MX are basically the same. Thanx. KEIHIN FCR MX39 CARBURETOR KIT FOR SUZUKI DRZ 400. WHAT'S IT COST? $249. This shows a simple trick to check whether the float height is correct or if a fl Apr 6, 2020 · Accelerator pump diaphram- does not look like a fcr part. Ideal for upgrades! Complete as pictured. 025 - needle set screw. FWIW/YMMV. Measure 9mm from the float bowl sealing surface to the highest (lowest with the carbs mounted to the bike) point of the float at a 90 degree angle to the sealing surface. 7 is the common pitch for this diameter. Keihin FCR 39 carburetor with choke, TPS (Throttle Position Sensor), ACV and fuel pump; float height has been set; jets are cleaned; fuel pump has been tested; These genuine Keihin replacement floats will fit ALL Keihin FCR39 and FCR41 Horizontal Draft and Down Draft aftermarket carburetors. I've posted my final settings before (97 900SSCR, keihin 41 FCRs, 11:1 pistons, stock displacement, dyno coils) and people think I'm running way lean but I have to say: It's worked for me. Availability: In Stock. 022 - seal. - Carb orientation o You just want th Dec 9, 2016 · These gains weren’t exactly cheap, and I can’t say how subtle or dramatic they’d be on your machine, but I can tell you I consider them worthwhile on my KTM. M&P340, Feb 19, 2009 #7. with TPS (Throttle Position Sensor) and fuel pump. Sep 18, 2023 · Rotate the carb so that the float is pointing towards 3 o’clock – the pin and needle should be on top with the float hanging loosely. 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. i threw in the 180 mains havent got to ride it since ive been working 12 hr days, but started it and everything seemed good. Add to Cart. In great condition. 7 pitch-just ask for M4; 0. It doesnt matter, as long as you can find that sweet spot! Once you find that sweet spot, the standard float height should be around 8. FCR and FCR-MX kit for replacement float needle and seat, having removable intake flange. fitment: 35mm - 41mm keihin fcr . R&D, 11419 Bombardier, Norwalk, CA 90650. I renewed all (!) o-rings (fuel pump, float chamber, needle valve seat, etc. com KEIHIN FCR 39 CARBURETOR. fitment: 35mm - 41mm keihin fcr horizontal carburetors . Pilot jet. including airbox adapters. A quick slap with the hammers' weight will pop the seat out. The Keihin FCR MX carbs are expensive and used swap kits rarely sell for less than $450 on eBay. If you're ever going to try and get as much horsepower as possible from your Duck, save the $$ from the jet kit and go for the carbs. Roller slides provide ultra smooth throttle action and the adjustable accelerator pump provides hesitation free acceleration. THE BEST PERFORMANCE FOR 4 STROKE MACHINES. JETTING CHART: DRZ400 Jetting for: sea level, stock exhaust or quiet 96db aftermarket pipe, 3x3 Mod. Measure the height from the bottom of the float to the Throttle Opening. 00. Jun 1, 2009 · I also started with 175 mains felt pretty good actually. Notify on availability. Gasket, Float Valve Complete W1362-020-9901 018-389 for the Keihin PWK28 contains GENUINE Keihin replacement parts. Product Code: REBUILD KIT / FCR MX 37 39 40 41. This is all under construction so please ask for more details. Over-flow drain joint and tube. 00 (65% Jul 28, 2015 · Posted July 28, 2015. Take the headers off, drill a hole a few mm bigger than diameter of the sensor, tack the bung in place, and check the sensor can be screwed into the bung without snagging the edges. 5 N502-11H00 SKU 018. carburetors. FCR-MX Features. THE CARBURETOR IS CUSTOM BUILT FOR YOUR APPLICATION ONCE ORDERED - STOCK CABLES ARE COMPATIBLE. shipping costs. For exploded view carb parts and accessories. 80 Valve seat repair kit with filter screen3. 5 (BST40)…. It's a 5:1 movement ratio. float height has been set; jets are cleaned; fuel pump has been tested; PBase. The most complete carburetor rebuild kit available for Keihin FCR-MX 37, 39, 40 & 41mm carbs. Keihin FCR MX carburetors (which have a removable float valve seat). this is a pumper carburetor that offers the best performance for 4 stroke machines. Posted May 30, 2006. I replaced mine with Allen head capscrews lie the ones on the slide cover at the top of the carb. $39. COMES WITH 55MM AIRBOX ADAPTER INSTALLED. 2; 2x float seat o-ring; 2x float valve; 4x fuel inlet o-ring; 2x pilot screw o-ring; 1x accelerator pump diaphragm; 1x accelerator pump o-ring; 1x Categories Keihin FCR MX carburetor parts diagram. Quad vents. does not work with standard float needle - must use needle --> 42. no matter what float height, and trying to understand the float measurment, 1 float chamber gasket; 1 float seat (3. Long story short, I bought a used DR650 that came with a pumper carb, I didn't know if it was ever installed on a DR650 or was just something the previous owner had bought thinking he could make it work. im also running 110 octane at a 32:1 ratio. Keihin jets FCR-MX carb carburetors and parts. KEIHIN FCR MX39 FLAT SLIDE CARBURETOR WITH ACCELERATOR PUMP & CHOKE. Reviews (0) GENUINE KEIHIN FCR 39MM CARBURETOR. single Keihin FCR carburetors. Float, FCR-MX -- KEIHIN# 1052-856-2100 (SKU 018-202) Brand: KEIHIN; Product Code: FCR-MX Float; Availability: Out Of Stock; $16. brand: keihin; Brand: KEIHIN. 4x float chamber gasket; 4x top cover gasket; 4x pilot screw o-ring; 1x accelerator pump diaphragm; 1x accelerator pump o-ring; 1x Keihin FCR 39 carburetor with choke; with TPS (Throttle Position Sensor) and fuel pump; carburetor body and selected parts have been ultrasonically cleaned; all parts are cleaned and inspected; new float chamber o-ring; new fuel pump o-rings; new EMN throttle needle; new main nozzle; new float needle valve and seat; float height has been set Keihin FCR MX 39 flatslide carburetor / Suzuki DR-Z400 DRZ 400 upgrade kit. Details: carb body and selected parts have been professionally ultrasonically cleaned. QUICK TURN THROTTLE KIT AVAILABLE HERE. xx Float Needle (FOR PRESS-FIT SEAT) Availability: In Stock keihin carburetor rebuild kit. Slide carbs (FCR's) - Float height controls 25% throttle at ALL rpms. Your Name. carburetor-body gasket surface. Remove sensor and finish the weld. 0mm (. 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… GENUINE KEIHIN PARTS . instant throttle response and more power throughout the power band. Prices for the Thumper talk kit and others are rising as Keihin has had Keihin FCR 39 carburetor kit from a 2004 Suzuki DR-Z400E. Oct 18, 2021 · Keihin FCR41 slant carburetor. carburetor body and selected parts have been ultrasonically cleaned. CONTACT? (562) 864 May 29, 2006 · WR Bob. Details: Keihin FCR MX 39 quad vent flatslide carburetor; with choke; with TPS (throtle position sensor) with accelerator pump (has been tested and works perfect) Jul 30, 2012 · My settings for a Stock 89 1127 engine, FCR 39's, K&N Individual pods, Yosh duplex pipe: Needle clip position - #4 from top Fuel screw 1-1/2 turns out Main - 155 Pilot - 48 Air Screw 1-1/2 turns out Air Jet - 200 Needle- EMR +3 Ignition Advanced So a 50 on a slightly modified motor sounds about right. Perform the jetting in the order given below. I was having some jetting issues with the CB900 so had a look at the carbs. Before changing any jetting parts, check the carburetor floats for correct height. BIke runs great, plugs look okay, no signs of overheating, etc. If the float level is too high the needle wont close and fuel leaks. Keihin FCR tuning manual by Patrick Burns http://www. Mar 9, 2016 · The FCR was stock on some MX equipment and on-road bikes until the FCR-MX/EFI came out, then it tapered off. genuine keihin parts . 021 - vacuum release plate. CV: If the float sticks out further, down, into the float bowl, the carb will deliver less fuel (leaner), especially at low Float All 1052-837-2200 (SKU 021-051) Brand: KEIHIN. Let’s look at them separately. 7) Now set the gauge on the carb and check the float hight. FITS All FCR Horizontal // All FCR-MX 37 39 40 . Details: Keihin FCR MX 39 flatslide quad vent carburetor. new removable intake adapter. TPS (Trottle position sensor). Blipping the throttle is masking the issue because the accelerator pump is squirting extra fuel into the engine. Old price 376. 99; Qty Add to Cart. 95 (fits all Keihin FCR carbs) . Over the course of this thread I learned that I had a 41 mm Keihin FCR slant body which is the precursor to the The following is a guideline for jetting Keihin carburetors. all parts have been cleaned and keihin carburetor rebuild kit / 2000 ktm 400 exc. Fits the DR-Z400 without modifications. Qty. The carb received my carburetor service. Searching the internet for FCR tuning tips I saw a user with a similar problem resolved the same issue by lowering the floats 2-3mm (increasing the float height above the carb housing while inverted). 00 €. with accellerator pump. If you go by the manual when the float keihin fcr re-spacing service (2) keihin fcr service & ultrasonic cleaning (9) show all * services. The FCR-MX setting are in the FAQs. Once this is set on each carb, reassemble the carbs and mount them to the bike. I sell the carb kit for $789. RK-0052 Repair Kit: 644 (BSR32SS) RK-0045 Repair Kit: Aprilia Leonardo (BST38) RK-0046 Repair Kit: Aprilia Moto 6. Problem is I've broken the brass fuel drain tube and led to believe its better to just replace the whole bowl but where do i buy one of these from? I cant find any online anywhere? I've seen the r&d bowl but thats over $300 australian Oct 4, 2008 · Waiting any kind of help and advices for the Keihin FCR 39. Includes the float pin and offers an exact fit replacement. with choke and hotstart. GENUINE Keihin replacement parts. 8) Slide the gauge down until it just barely touches the floats. new o-rings in the fuel pump. Turn the idle speed knob clockwise until you can see about 1/16" of daylight onder the slide. 2x float chamber gasket; 2x top cover gasket; 2x vacuum plate seal; 2x valve seat 2. dual horizontal carburetors . Read the FCR-Tuning Guide. Be the first to rate this product. includes throttle and throttle cables. 011 - screw, bracket. : 1779. Keihin FCR 39 carburetor with choke, TPS (Throttle Position Sensor) and fuel pump; carburetor body and selected parts have been ultrasonically cleaned; all parts are cleaned and inspected; float height has been set; jets are cleaned; fuel pump has been tested; new float valve seat o-ring; new float chamber o-ring; new fuel line o-rings; new Keihin FCR Carburetor tuning manual. 6) Rest the carb in a position that the float just touches the float needle valve, but does not compress the float needle valve spring. Feb 25, 2023 · 209 posts · Joined 2006. new o-ring and washer at the fuel screw. Make sure the vacuum release plate is in Square Side Down. THIS PUMPER CARBURETOR OFFERS IS THE BEST BOLT-ON PERFORMANCE UPGRADE FOR 4 STROKE ENGINES. Details: Keihin FCR39 flatslide racing carburetors. Doesn't look like FCR but are FCR-MX 2nd or 3rd gen carb parts. Many are complete kits, some are limited. $65. Keihin FCR 39 carburetor with choke; with TPS (Throttle Position Sensor) and ACV and fuel pump; carburetor body and selected parts have been ultrasonically cleaned; all parts are cleaned and inspected; float height has been set; jets are cleaned; fuel pump has been tested; bearings are freshly greased; new float chamber o-ring; new fuel pump o 3. Jan 24, 2024 · The float needle valves seemed to be working properly. Keihin# 1062-814-2100. please specify carburetor size with your order to receive free sticker for the side of your carburetor . Price includes VAT, excl. There is a difference because a classic 1st gen slant body FCR will take a completely different pilot (slow) jet and fuel screw than the one pictured. 0; 2x float seat o-ring; 2x float valve; 2x float seat screw Keihin FCR MX 39 carburetor. float height has been set; fuel pump has been tested and works perfect; bearings are freshly greased; Nov 19, 2012 · FCR float needle seat oring 8F2-14147-00. Basically 160 main, EMN needle 3rd clip, 45 pilot, 100 paj, 200 Maj. $19. Oil change and filter, spark plug, valve check, cleaned air filter. May 4, 2019 · In this video I show how to measure and adjust a Keihin PWK 38mm Air Striker carburetor float height. rebuild kit (1) to suit fcr-mx37 fcr-mx39 fcr-mx41 carburetors. Dec 31, 2016 · Hey guys, you can support Dirt N' Iron by using our amazon affiliate linksThese are the products I use, like and recommend. 80 (FCR-MX Std) -- GENUINE KEIHIN PARTS KEIHIN FCR & FCR-MX 3. directly fits without modifications (fits stock throttle cables). This carb received my carburetor treatment service (see my other items). keihin carburetor rebuild kit. It properly meters the amount of fuel your carb can flow. Product Code: FCR Float. ducati 2x single keihin fcr downdraft carburetor rebuild kit . CV: If the float sticks out further, down, into the float bowl, the carb will deliver less fuel (leaner), especially at low Feb 9, 2015 · Spec is 8mms. Adjust the tool so that the float height indicator will not touch the floats. fitment: ducati dual keihin fcr downdraft carburetors . 80 (press-fit) for gen-3 carburetors 37mm-41mm with non-removable airbox adapter. 582 . factorypro. You need to know which trottle position the problems appear to know what to change. #15 · Mar 7, 2023. THE CARBURETOR IS CUSTOM BUILT FOR YOUR APPLICATION ONCE ORDERED. FITS Keihin PWK28 Jul 24, 2007 · The cheapest way to get the most horsepower is with the FCR kit. 1 top cover gasket ; 1 vacuum release plate seal; 1 float chamber gasket; 1 float seat (3. Currently unavailable. 2x top cover gasket; 2x float chamber gasket; 2x vacuum plate seal; 2x float seat 3. kit includes . Flex-Jet, $32. O-Ring Kit includes all the necessary o-rings and seals to rebuild your carburetor mid-body o-rings, venturi ring o-ring, top cover o-ring, fuel joint o-ring, float bowl o-ring, float bowl drain o-ring, accelerator pump u-ring, accelerator pump o-ring, diaphragm, valve seat o-ring, fuel screw o-ring Dec 11, 2009 · You can even adjust while its still connected to your throttle cable, and hotstart (for 4 strokes). Bend the float tab to correct. each kit includes: 1x top cover gasket; 1x float chamber gasket; 1x vacuum plate seal; 1x float valve; 3x fuel inlet o-ring; 1x accelerator pump diaphragm; 1x accelerator pump o-ring; 1x accelerator pump u-ring; 1x drain plug 0-ring; 2x stainless top cap screws This Keihin FCR-MX carburetor kit will give you a serious power increase along with the best throttle response available. Check the float level. 1 reviews / Write a review. The ultimate 39mm carburetor with TPS! In like-new condition. 95. fits 39mm keihin fcr horizontal carburetors . Like I said, ap timing, needle diameter and height are painfully obviously when the bike isn't happy. Phone: 562-864-8218. jets are cleaned. with TPS (Throttle Position Sensor) with accelerator pump (fuel pump) carburetor body and selected parts have been ultrasonically cleaned. Throttle cable enclosure. The length is 12mm, but you can use slightly longer if required. If necessary, reset the float height as follows genuine keihin fcr-mx 32 flat-slide carburetor with choke, hotstart, tps. I've done all basic maintenance since purchase. com/tech/tech_tuning_procedures/tu. This carb received our carburetor service. You will get: 3. B Keihin Float Valve (FOR PRESS-FIT SEAT) - W1362-019-9900 (FLOAT NEEDLE) Product Code: 3. It is a delicate operation to remove the seat and easy to do if you understand. 0 . FCR-MX37, FCR-MX39, and FCR-MX41 carburetors are available. 024 - clip for jet needle. 2) 1 float seat o-ring; * keihin fcr 39 carburetor rebuild kit / suzuki drz 400 drz400 drz400e 400e. Mar 28, 2009 · Hi All, This is an interesting one, if you check your float height on a FCR by the down load official manual it says the float must be parallel to the carb body, if you go to the Keihin carb site the float height is set at 9mm, they are not the same. I measured it like this diagram: Where it shows the float tongue is up against the little bit of wire that hooks it up to the float valve, but without pulling the valve open. Only fits FCR-MX carburetors with float seat held in place with a screw. Over the course of this thread I learned that I had a 41 mm Keihin FCR slant body which is the precursor to the Categories Keihin FCR carburetor parts diagram. Your GENUINE KEIHIN PARTS . Details: Keihin FCR MX 39 quad vent flatslide carburetor; with choke (new) with TPS (Throttle Position Sensor) with ACV (Air Cut Valve; coast enrichener: reduces 'popping' at deceleration) with accelerator (fuel) pump This carb received our carburetor service. KEIHIN FCR MX39 FLAT SLIDE CARBURETOR WITH ACCELERATOR PUMP, CHOKE, HOT-START, TPS. And–once the carb was pulled off–installing them was quick and easy. Sep 18, 2012 · Return the carbs to the base jetting and needle position. The float level is a pretty big deal with the FCR carbs. KIT INCLUDES: THE CARBURETOR WILL BE COMPLETELY ASSEMBLED AND READY TO BE USED. Using a small slide hammer with a screw tip just slightly larger than the small hole in the seat, turn the screw in until it just 'bites'. Genuine Keihin high quality parts. Float Valve (Needle Valve), 3. ARin, The bolts are M4 x 0. 8. Keihin FCR MX 39 flatslide carburetor. If the float height is too low (small float height measurement), bend the tab slightly to increase the height measurement. 016-937. 023 - jet needle. For parts not listed below, please contact us. High capacity float chamber. Hot re-start knob. If that doesn't help, get a wideband lambda or get it to the tuner. M&P340 Adventurer. $0. Created Date: 10/31/2005 4:50:48 PM Details: Keihin FCR MX 39 carburetor with choke. ). With choke, TPS (Throttle Position Sensor) and fuel pump (accellerator pump). KEIHIN# 1050-948-2101 (SKU 021-734) Write a review. INSTANT THROTTLE RESPONSE AND MORE POWER THROUGHOUT THE POWER-BAND. 8 Float valve seat kit for Keihin FCR (MX) c arburetors. 8 flo at valve seat. rm nk lm pi ms we hs el ky st