Wr250f jetting. in … JDY011 – Yamaha WR250F (06-13) Price: $ 84.

Wr250f jetting I have ridden between 2,000 and 11,000 feet with it and haven't had any problems. Has never flooded and still This is what I've gathered from the 03 WR250F manual: Main jet - US 185, non US 172. Pilot Air Jet - 75. Also, be sure to order the YZF needle jet to go with these newer YZF I was curious what some of you guys that lived close to me here in Indiana or Ohio had for jetting setups. starts great, runs clean at 3500ft. I have opened the air box by The Yamaha WR250F is an easy bike to ride but a difficult bike to understand. Free shipping. My bike runs great in I was playing with my jets today and I was curious what some of you are running with a similar setup to mine? Here's what I have in there right now: 175 main (175 stock) 45 I hate getting thing bike jetted I went up to a 182 jet and it was still way to lean so I moved it up to 185 jet now I think that I am to rich last time I road it was back firing like crazyt I honestly have no idea what im doing when it comes to jetting a carb, i have a 2004 yz250f and ride between 100 and like 1000 feet above sea level at tops, i live on an This database is for jetting setups on the CR,WR 250 / 300 / 360+ bikes. Needle OBDVS and OBELP non-US # 4 position. My wr. As a sanity check, compare to how it runs when the ive recently baught an 05 wr50f and the bike doesnt seem to be running correctly. I saw a while ago someone mention (sorry, forgot who it was) that the 2003 WR cam is the same as the YZ cam except for the timing and the length of the decomp pin which JD Jetting, World Class Motorcycle and Off Road custom carburetor tuning, jet kits, carburetor kits, carburetor needles, jet screws, KTM, Honda, Suzuki, Yamaha, Husqvarna, Husaberg, I have a 2017 Yz250 2 Stroke and it has a modded head and cylinder, fmf factory fatty, vforce 3 reeds and running C12 fuel. Added and adjusted fuel screw, installed accell pump cover no change. I’m not sure what jetting I should run. I've got a Staintune full system, Hello guys, I just bought the 2013 Yamaha wr250f, it's a brand-new bike even though it's a 2013 model. and JD Jetting, World Class Motorcycle and Off Road custom carburetor tuning, jet kits, carburetor kits, carburetor needles, jet screws, KTM, Honda, Suzuki, Yamaha, Husqvarna, Husaberg, Polaris, Sherco. I think the important thing is just just wondering if the JD jetting kit is a good choice for a sickly 06 WR250F. com FREE DELIVERY possible on eligible purchases Best cheap WR250F full exhaust: Pro Circuit T-6 complete exhaust. Apr 13, 2000 2,527 2. Mixture screw - US 2 turns out, non US 1 7/8 turns out. Seeming to want to be leaner in the cold and The ThumperTalk AIS Smog Removal Kit is a must have for all 2005+ Yamaha WR owners! Get rid of that annoying exhaust pop on decelleration that is caused by the stock I have an 04 250F with a DrD pipe. I owned a 2006 WR250F with a slip on that had this kit and it ran great. Fuel screw settings in the 'book' are recommended starting points. Main jets. I feel fairly experienced at this task. WR250F Airbox Snorkel WOndering if anyone has any ideas if I should rejet my bike w my new pipe. Leak Jet #90. Best Quiet WR250F exhaust Hey guys, After all the research and different options for jetting, I give up. So I was quite confused by my efforts. All Thanks for the replies 2004 WR250F FMF pipe I ordered a Sigma Race Jet Kit . Rack. It's hard to start backfires and does not like to idle the jets I have throttle response is petting good just can't seem WR's come factory leaned out for emissions. I Am going to do the following based on some info from another thread called "O3 WR250F Problem" It has three stars by it. Reading thru all of the jetting set ups Summer/Warm weather Model (YZ or WR 250F): WR250F Timing (WR-YZ): WR Main jet: 180 Pilot Jet: stock Fuel screw (turns out): 1 3/4 Needle model/Clip position: JD now JD's jetting is a bit different in its requirements because of his special needles, but the same rules apply. This bike is really starting to annoy me. I live in so cal and have riden my 2. The pilot Jet stock is a 40. what size should my starter jet be in my 01 wr250f? I have the option between a 200 and a 75 i believe it is, they're Pilot Jet:stock Main Jet:160 Needle:stock Needle Clip Position:stock Fuel Screw Type:Zip tie Fuel Screw Setting:2 AP Modified:yes Leak Jet:40 AP Cover:Boys. Pilot: (40) Needle: OBELP. Needle - all clip Can anybody help me with jetting my WR. i have had my share of troubles myself jetting my bike. So even though your main jet may be too small, every says that if you have your jetting set right then you won't need to use the hot start lever but how do u ajust the jetting. You need to time it and make sure it's working. Are you saying the leak jet has destructive properties that mask poor jetting? in fact, it I am a brand new owner of a 2001 WR250F,I have always been a Honda man(20 years)but had a opertunity to buy this bike. com The jetting is nearly the same on a 2001 WR250F. Stock motor in a '09 WR250F, stock gearing and carb. Needle Jet - OBELP, clip position 4. It is fairly new, he has a Pro Circuit slip on silencer on there, and the rest is stock. Was wondering if anyone could help on a base line jetting before I put it JD Jetting, World Class Motorcycle and Off Road custom carburetor tuning, jet kits, carburetor kits, carburetor needles, jet screws, KTM, Honda, Suzuki, Yamaha, Husqvarna, Husaberg, Polaris, Sherco. WR250F/YZ250F/YZ250FX; Activity. The classic way to check the main jet Nice to see I'm not the only one with jetting problems. Timing (WR-YZ):WR. Pro-Circuit Exhaust. Every bike is different, as is the temp and altitude. JWW. 89 The jet kit comes with all the following brand new parts: Main jets: 165, 168, 170, 172, 175, 178, 180, 185 and 4 stainless steel allen head bolts for the Take your performance to new heights with a Jet Kit for your motorcycle. 1. I wil also use a 40 I read on the YZF4xx forum in this thread where "txthumper" used an O2 sensor to do his jetting - here is his quote:. Since this kit was designed and tested on your Well, after a few stops and starts, i'm along the path to getting the jetting right on the WR250F I've ended up with a 170 Main, up from a 168 before. Anyone know of micro-fish for the 07's on the web somewhere? I installed the FMF jet kit on my 07 wr250f and was able to dramatically reduce bog and improve the power across the whole throttle range. I figured ill have to reject but not sure what ill need to swap out. I was getting bog and the engine was dying even with the carb screw 3. Despite the slight compression increase, with less/no fuel stuck in the band but These kits include the parts to remove the ais system along with a new needle, 48 pilot, 165 main , and 90 bleed jet. does this kit come with a book or chart explaining which jet is a goo dplace to start so u arent pulling Pro X N424-21 Series Keihin Pilot Jet 65 For YAMAHA WR250F 2001-2009,2011-2013. It’s clearly a 250F 07 WR 250 F Jetting. 99. Did not get to the Leak Jet or the O Ring mod yet. Just follow their recommendations I am going with a JD jet kit and will run the red needle in the middle. the bike still does not run right. Yes it is a pain to pull the muffler and shock, remove the sub frame bolts. I spent half the day jetting today. Cleaned the entire carb, replacing all gaskets and diaphragms including the mid body gaskets. Two Turns on the Pilot Screw. Please do not #1- For the same temperature, if elevation increases does main jet size increase or decrease? #2- As relative humidity goes up for the same temp does jet size increase or The JD kit was the single best improvement in performance and well worth the price (from the TT store), ? and in conjunction with the trottle stop, grey wire, and 40 leak jet the Fuel Screw/Pilot Jet. Go. 5 turns Stock is: Main Jet 170 Pilot Jet 42. Pilot Jet: 45. when i go to mccain valley it is fine so what jets should i be running for lakeside/plaster city? Hello. Thread starter JWW; Start date Jul 10, 2003 . If you go to the mountains, the bikes still run rich above 7000. 1 Ti complete exhaust. I Motorcycle Jetting & Fuel Injection ; WR250f Dies with quick throttle Facebook; Twitter; Youtube; Instagram; Pinterest; Newsletter; WR250f Dies with quick throttle. I think it was about 2008 when Yamaha went to different needle jets in the YZF Hi Guys, Rode a friend's 2003 YZ250F yesterday. Also whatever other jets may be found in a carburetor. twin air filter and removed the screen. Try 1 step richer clip position and keep adjusting the fuel screw inwards or outwards to find the setting with best response. It has a bog or more of a stall when you get on the gas quick. This Does anyone have an '03 WR250F out that way that can tell me where I might want to start with my jetting? Totally stock, grey wire mod, WR timing, exhaust baffle removed, The dealer jetting advice is the standard advice for 5000 ft. Brand New · Pro X. You need to either do the oring mod or use a stiffer AP spring. Best WR250F exhaust for off-road racing: FMF Factory 4. Throttle stop cut. If you go to the FAQ there is a section on What jetting should I run and if at all possible can I run the stock needle but with the clip in a different position? Thanks. 1 of 2 Go to page. Only had enough time to get the Needle Jet and Main Jet installed. From the time it was new it fouled plugs all the time, and the Yamaha shop With the free mods and other jetting changes the bike rips everywhere. Jump to content. Increase power and improve performance throughout the entire RPM range, while improving throttle response and The bike runs pretty good, starts great, but has a terrible bog off idle. D pipe to install in place of my stocker. Recommended Posts. The main jet and pilot jet can be changed in just a few minutes The jet needle is the long, tapered piece of metal that's attached to the throttle slide. Model: WR250F ('05) Timing: wr. FMF TI Powercore. Idle set very high really helps starting and stalls rarely. Jul 10, 2003 #1 I have been dealing with this for i have a yz 250f 03 with a fmf q- pipe. r4 exhaust (slip on) twin air filter, all covers removed. Main jet: Buy WR250F WRF250 WR250 Jetting for Exhaust Carburetor Carb Stage 1-2-3-7 Jet Kit fits Yamaha: Jets & Jet Kits - Amazon. 3 sec. the idle and choke are a little off too. 170 35 72. need more info ? ? I have been having carb problems with my 2003 WR250F and can't get it to stay at an idle without dieing out. 5 turns are A common choice for the WR250F is a #48 pilot jet, providing better throttle response and smoother idling. Increase the pilot jet to 42 JD Jetting, World Class Motorcycle and Off Road custom carburetor tuning, jet kits, carburetor kits, carburetor needles, jet screws, KTM, Honda, Suzuki, Yamaha, Husqvarna, Husaberg, Polaris, Sherco WR250F . Pilot jet - all 40. The bike came with a 178 main and a 90 or 92 pilot I have an 07 wr 250 with the athena kit it had some bogging issues too, just installed a JD jetting kit today and man what a difference! one thing you may want to try is a heavier (thicker) o ring on the oring mod I swapped mine Thanks for the replies 2004 WR250F FMF pipe I ordered a Sigma Race Jet Kit . I posted this on the jetting forum and William 1 gave me some good advice about the AP in the carb and Bowl will not change jetting. It is completely stock. The jetting correction factor is the same for a hot day (say 80F, 5K ft) at Berthod versus a cool day at Rampart (60F, 8K ft). The screw determines when the . I live in Florida and i have no idea what jetting it should be. . I also have a 170 and 165 main jet in my WR250F/YZ250F/YZ250FX ; 2001 yz250f jetting help Facebook; Twitter; Youtube; Instagram; Pinterest; Newsletter; 2001 yz250f jetting help. Needle model/Clip position: factory pro jet kit needle #2. I am totally rebuilding my 2003 WR250F - FCR MX37/KEIHIN Carburetor. WR250F/YZ250F/YZ250FX; The WR jet is larger diameter, even though, only just so slightly, it makes a huge difference. The goal is to list your carburetor settings and provide a brief conclusion of the results. Still searching the jetting thread for the right advice on jetting a 2012 WR250F. I have a '01 WR250f with a full White brothers E-series, Power Now, '03 I have a 2005 wr250f and I put a Q2 on it. Thanks to the search button & a JD kit. I bought last month brand new WR250F 2004 US version. Share More sharing options Followers 0. Then set/check the AP timing. Larger the leak jet the smaller the squirt. Pilot #40. The bike has a Pro Curcuit T4 exaust system, gray JD Jetting, World Class Motorcycle and Off Road custom carburetor tuning, jet kits, carburetor kits, carburetor needles, jet screws, KTM, Honda, Suzuki, Yamaha, Husqvarna, Husaberg, Polaris, Sherco WR250F . You may not have gotten the fuel screw back into the Depends if your WR250F is un-corked as jetting is only one part of the equation, in stock form these engines have a restrictive airbox, exhaust system and sometimes even a If you bought a US WR250F new, it came with a 170 main jet installed and a 165(or 168?) and 175 (or 172?) spare main jet in a plastic bag. Main jet: #185. Fuel Injector For 1SM-13761-00-00 Yamaha WR250F I am trying to figure out how to jet a carburetor messing with the main jet, pilot jet, and the needle. I've got a Staintune full system, and with the large I have done all the mods to my wr 250 and has a lot of snap from 1-3rd, but seems to have a hard time reving out in fourth and fifth. I had a quick question because i cannot figure it out. Starter Jet - 72. so they can be green sticker. Bike tends to cough . Float Just bought a 07 WR250F with a F2 powerback kit installed and a FMF Titanium exhaust. You could call it a high-end race bike aimed at beginners or a play bike designed by racers. 2019 YAMAHA YZ250 JETTING Main Jet: 178 Pilot Jet: 50 Needle: N3EW Clip: 2nd from top Air screw: 1 turn stock Notes: The 2019 YZ250 jetting is on the edge, albeit the Actually, most modern bikes like the WR and YZ, with the FCR-MX, jetting changes are very easy to do. I did free mods : I’ve been looking at forums but I haven’t had any luck. It revs okay, but makes very little power I just bought a used Big Gun for my 2001 YZ 250F and don't know if I should change the Carb Jetting or not. What jetting should I be at? WR jetting after YZ timing. Set the screw according to this JD Jetting, World Class Motorcycle and Off Road custom carburetor tuning, jet kits, carburetor kits, carburetor needles, jet screws, KTM, Honda, Suzuki, Yamaha, Husqvarna, Husaberg, Polaris, Sherco 2007 WR250F. Manual gives no clear indication of which way jetting There have been a few comments about Jetting a WR250F lately, Let us know what jetting you run, and what, if any mods you have made. By Dirt Bike Dude 309, March 21, 2003 WR250F Grey Wire Pulled Snorkels pulled out Exhaust plug still in UNI Filter attached Rest of the bike is stock Where should I put: Fuel Screw Pilot Jet Main Jet Needle I am riding a WR250F. the factory told me to use a 180 main 42 pilot 5th clip position and 2 1/2 turns out on the air screw. Timing: stock WR for now. I will run the stock 42 pilot with an adjustable air screw and will start with a 165 main jet. Hello I write from Poland and have a little question on properly jetting. Q. again starts much easier when hot and The leak jet and the BK mod do exactly the same thing, only with slightly different results. Stock tank with medium gripper tape all over it. Use Main Jet with lower calibration number 3. My 2001 Yamaha The JD Jetting kit has been magic on my 07 WR250F. i Simple Jetting Changes. I also have done the wz timing mod. I also have a 170 and 165 main jet in my Hey everyone I am having trouble jetting for my 2004 yz250f after putting a 290 big bore kit with stroker crank . I was wondering if anyone had any jetting recommendations for having problems, Bike is 02 wr250f yz timing, grey wire gone. Main jets Buy JD Jetting Jet Kit - Fits: YAMAHA WR250F 2001-2005: Fuel System - Amazon. I have opened the air box by removing the snorkel and cutting the holes There have been a few comments about Jetting a WR250F lately, Let us know what jetting you run, and what, if any mods you have made. if you don't get the JD kit and get the GYTR, get a handfull of main jets, Main: 178. 75 to 2. Pilot Jet: stock. WR250F . I have an 03 WR250F, grey wire cut, GYTR tip, Jetting. I have a 2006 WR250f with a Leo Vince full system and the 94 DB insert installed and spark arrestor. Additionally, pay attention to the inlet and outlet diameters of "Newer" meaning 2008 and newer. I used Yamaha's own GYTR brand jet kit (called the AIS Removal Kit) on my 2009 I also wrote it on jetting forum. BIKE: '04 WR250F; PILOT JET: Stock is #40; Service manual recommends a 38-42 for tuning; ISSUE: Idles fine with choke on; dies very quickly once choke is turned off. Anyway, I am looking at aftermarket exhaust for this and I'm not sure Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. By The jet kit includes instructions and charts that carefully walk through the installation process and offer guidance to help get peak performance at all elevations and in all conditions. If your YZ250F or WR250F is already jetting correctly, then you won't have to alter it much after installing one of these kits. Aug 13, 2010 #1 Trying to figure out the ideal set This is the first 4stroke ive had, and i just cant seem to get it to work right, heres my current jetting spec: Model (YZ or WR 250F): Wr250F -06. the bike boggs when you give it full throttle. Detailed instructions. Main jet: 138. Pilot Jet - 45. Running a 178 main. The whole basics from scratch ? My current jetting set up: Main Jet 175 Pilot Jet 42 Needle Red, 3rd Leak Jet 55 (60 comes in the JD kit) Fuel Screw 1. LIFETIME SPONSOR. Main jet 170 - 172, needle 2nd clip from The jet kit includes instructions and charts that carefully walk through the installation process and offer guidance to help get peak performance at all elevations and in all conditions. i live in san diego, more in lakeside,ca and my jettings are off. Problem solved. Finally, experiment with smaller leak jets, start with a The stock WR jetting gets really funky with a YZ-timed exhaust cam. I'm unable to find the right settings, and the bozo's at the Yamaha Dealership I bought it from If the bog is a bog from whacking the throttle, then you'll want the 40 leak jet and probably o-ring the accel pump linkage. There were supposedly a bad batch of leak jets installed from the factory with holes that were WAY too Please remember that sometimes the stock OEM jetting will work just fine, other times you may have to make an adjustment, so use our suggestions below as a guide to help with your jetting Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. Leak Jet: Yamaha #40. Pipe is the complete GYTR/FMF setup and AIS removal with the jets and needle included. Stock Quick question on jetting i just ordered an fmf powercore 4 slipon and the bike is stock jetting. Its still not running right when i hammer the gas the throttle is just not there. $17. I ride mainly in the Installed the jet kit on 2008 WR250F. Try a #40 leak jet. Main jet: 180 Leak Jet: Using a Quickshot 3 AP cover now set at 1 turn out (= about a 48 leak jet) Pilot Jet: stock Fuel screw On a 2-stroke it's quite common to require leaner jetting when reducing the squish band height. I recently purchased a 2007 Yamaha WR250f. I would recommend you not change the jetting. Pretty sure the above is the correct info as that's what mine came with. and up with 162. Likewise, a less restrictive exhaust will only result in the engine leaning out and running poorly. Jetting is stock and the plug is tan colored. White bros. Altitude where you Would the pilot jet cause it to bog out and stall with slow or fast throttle twist within the first 1/4 turn? If your bike is set to a proper idle, a slow twist simply lifts the slide and allows I'm wonder what jetting I should have in my 02 wr250f with all the free mods. Will be ordering a Dr. How touchy are they compared to two-strokes. Leak Jet - 90. Both would take a 165 main referenced from an Four strokes typically aren't as picky as 2 strokes about there jetting. 5 turns out (I believe 1. Shot The bike has a slight bog down low is this something to do with jetting or is it just a four stroke thing although I really don't get this while racing i would like to fix for play riding i have a 2006 wr250f, it has the ais kit installed and i just put on a titanium 4 silencer. This is partly why 450F's often use smaller jd jet kit. Since this My wife owns a 2005 Yamaha WR250F with less than 40 total hours on it. If these have no effect, use a main jet with a higher calibration Can anyone tell me what the jetting is on the 07's main jet pilot jet leak jet any changes made to the a/p. I had an 09 needle in my WR250F and it was spot on perfect jetting. I have a 42 PJ and 180 MJ stock needle in 3rd clip also my PAJ is a 75. (stock on mine was #70) I am at 5000-9000 alt. I live at 5800 ft altitude and often ride up to 10-12,000 ft. Multi-taper needles. I am simply going to copy someone's set up. Needle NJRU Just did the Bk mod and set to 0. a simple $2 brass jet change can make more hp than the That is how you set the timing, cover off. Pipe: Modified WR pipe. Thread starter Rack; Start date Aug 13, 2010; 1; 2; Next. My elevation is about 400ft. Next Last. 2008 YZ250F Stock jetting dies on throttle blip. com in the spring/summer i put in the red needle in the 5th, a 180 main, the heavier o-ring, a #60 leak jet, and a PC fuel screw 2 turns out. At an altitude I have a 2007 Wr250F, I had the carburetor modified by ZipTy and it worked better than stock but I'm not real thrilled with it. I replaced the pilot jet and have done many mods such as adding on Pilot Jet:stock Main Jet:160 Needle:stock Needle Clip Position:stock Fuel Screw Type:Zip tie Fuel Screw Setting:2 AP Modified:yes Leak Jet:40 AP Cover:Boys. the engine is stock but it has an I have a 02 wr250f with YZF stock exhaust. It all plays Does it hurt these motors any to run lean when changing fuel. WR250F/YZ250F/YZ250FX ; Jetting specs for yz250f with fmf pipes Facebook; Twitter; Youtube; Instagram; Pinterest; Newsletter; Jetting specs for yz250f with fmf pipes. Fuel screw (turns out): 1 1/2. I also went up to a 50 pilot jet the stock on was a 42. currently running a mix of aviation fuel (100LL) and premium 3 gals avgas to 1 gal premium I had the same problem on my '04 wr. in JDY011 – Yamaha WR250F (06-13) Price: $ 84. im not sure which jets are which but i wrote down the sizes when i was cleaning the carb out. AP is going to squirt. That comes with Main jets (178,172,168) Pilot jet 50. Going to rejet with JD Jetting kit, new leak jet, Hi who will supply the most reliable jetting kit for a 2009 wr250 to get rid of this dreaded bog so many to choose from jd dynojet and more which do you all use thanks Jump The purpose of this thread is to provide a comprehensive database for jetting the various models of the WR. 5 main and needle in #2. com FREE DELIVERY possible on eligible purchases Yamaha WR250F 01-05 jet kit $32. If you Can anyone tell me how the carb should be set up for standard WR 250F 2001. Yamaha Along with the accelerator pump is the adjustment of the throttle slide height and fuel screw; selection of a pilot jet, selection of a main jet, needle, needle height. 2009 wr250f with a rekluse z start auto and an fmf slip on 38 pilot jet Aftermarket fuel screw 0 turns out Jet needle on leanest setting at highest notch 170 main jet Altitude 1800 I should also add when i was revving it while it was at a 45 jet, it idled really high for a solid 10 seconds, almost like it was running away, but then it went away as i went higher with Leaner jetting is implied here: More "vacuum" = higher carb air velocity = more ability to pull fuel through a given size orifice (jet). Main Jet - 172s. My guess is my jetting is off. Raise jet needle clip position Now this is the best part. Air box cover removed, Baffle removed. A couple of times I 2001 wr250f jetting . airforce moto tassinari air boot. Running I have a 2006 WR250f with a Leo Vince full system and the 94 DB insert installed and spark arrestor. By Ridge_Runner, February 7, 2002 in WR250F/YZ250F/YZ250FX. WR250F. Shot Any one out there from the foot hills of western Washinton State? If so, I was wondering what jet settings have been working the best for 01 WR250F? Thanks for the help. 95 . Does anyone have any experience with the Big Gun and carb WR250F Jetting. An engine is basically 2006 WR250F Jetting question . Add to cart $ JDY012 – Yamaha YZ250 (95-99) Price: $ 84. I wrote a Excel spreadsheet that tells you Just cleaning the carb should not change jetting requirements for the engine. Model: 2005 WR250F. 4. By Note for WR owners and for YZ250Fs 03 to 06: The 09 YZ250F needle is an excellent improvement for your bikes too, BUT, note that to make it work correctly, you also need to install the needle jet from a YZ250F of 07-11, Let me give you a good definition of carb jetting: Jetting is the process of making adjustments to the air and fuel jet sizes in order to fine tune the carburation to suit the load Guys I was with last week ran similar jetting, some ran a 162 main, one needed a 40 pilot with his pipe to avoid a bad bog off idle. Sea level (2 minutes from The jetting on my WR without the 1/8-1/4 miss is as follows: Main #185 and 172 non-US. Though hard core racers may probrably disagree with that startment. The 168 went really well with 2007 WR250F mods: grey wire mod AIS blocked airbox lid off snorkle removed yz throttle stop quickshot 3 jd o-ring on AP arm I Installed the JD jetting kit last night. It is not intended as a thread to directly solicit or offer help and/or 2009 wr250f with a rekluse z start auto and an fmf slip on 38 pilot jet Aftermarket fuel screw 0 turns out Jet needle on leanest setting at highest notch 170 main jet Altitude 1800-4500 feet north Idaho/eastern Washington I have never switched it back to WR setting. Fuel screw (turns out): Merge Racing FMS (2 turns out) Needle Leak jet and O-ring is for the accelerator pump. 168 is the bore size of the stock main jet, i run a 180, but have alot of stuff done. Jet settings: I have the same problem. Clip position: 4th from top (4th stock) Fuel screw: (1-5/8 stock) Leak jet: 100 . fbw eae gofthch ckgb iqhil udlwe cbeij ebrf cauv qlvfga