2021 yz125 needle jet specs. I ride anywhere from 300-4000ft usually.

2021 yz125 needle jet specs Add to cart. James Dean purpose-built this jetting kit for riders looking to improve running performance and throttle response throughout the RPM range. Here are our 38mm Mikuni TMX jetting specs: Main jet: 430 Pilot: 40 Needle: 6BFY43-3 Clip: 3rd from top Air screw: 2-1/4 turns out Notes: On our full-race Pro Circuit-built Ryan Villopoto Each two stroke kit typically includes: – two, dyno developed and tested, multi-taper needles. Most of the plugs would foul after I started up the bike On the small bore engines using a #7 slide, I like to use a single taper CCL needle. 5 out Main Jet 310-320 1992 Pilot Jet 15-20 Needle STOCK Clip Position 3RD Air Screw 1. With the many woes KTM 125 owner's seem to have with the Mikuni TMX38, . There isn't really any way to test the needle other than by feel, but it's usually quite obvious when it's right or wrong. Page 8 Table of contents Specifications. On a 125 the main jet is what people mostly change because 125's are mostly riddin on the pipe. Related products. It appears that Kawasaki fattened up the main jet for 2010. For now, should I change the pilot or main, or both, or leave them as is and see how it runs first? Let me see if I understand the concept correctly. Jet Needle Adjustment. YZ Series. Down by 20°F (not shown in the chart), you will need to enrich most metering circuits (pilot, needle, main) by at Page 132 ENGINE Symptom Setting Checking Lean mixture Lower jet needle clip position. Price. YZ250M2 YZ250XM LIT-11626-34-11 BF1-28199-10 Page 2 Operating, servicing and maintaining a passenger vehicle or off The 2021 YZ125 is the first step into serious competition from Yamaha. 2021 Yamaha YZ 125 pictures, prices, information, and specifications. In the OEM parts fiche, a #35 is listed as stock and only richer power jets Pro circuit specs are 165 main with a 62 pilot and a y3 needle. 450 I just received a GYTR jet kit with the Y4 needle and a JD kit and am wondering which way to go on my '23 125X this bike has been a nightmare to jet with the provided stock specs. 5 turns out Needle jet S4 (KTM part #55431021400) stock is S1 Needle 42-75 on the 2nd clip (Yamaha part #284-14116-H5-00) Slide 5. I'm a 800 above sea level and can't get my 2024 yz125x to accelerate properly. YAMAHA YZ125 JETTING RECOMMENDATIONS Here are our jetting suggestions for your YZ125. (1 Leaner *Hard breathing groove down) Lack of speed (Standard) 1. jetting specs per gytr kit is power jet - 70, Y3 needle (3rd clip) 175 main and 62 pilot air screw 1 1/2 We ended up with a 55 pilot, NOZJ needle in the third clip and a 162 main jet. James Dean purpose-built this jetting kit for riders looking to improve running performance and throttle response throughout the RPM range. On our built-out YZ125 the stock settings are: #40 pilot jet , 42-74 needle / 3rd clip, #410 main jet Your 43-74 needle suggest you may have a later model bike (2011-2021) with the long stock silencer. Any help would be appreciated 🙏 Then the fuel metering is richer (less oil / more gas) per same jet sizes/settings, not by much but if the settings are rich to begin with, just compounding it. Post a pic if unsure. 2008 Jetting (USA model) Air Screw: 2-1/4 Turns (out from closed position) Slow Jet: #40 Needle: 6BFY42-74 (3rd clip position, from top) For two-stroke bikes, our jetting specs are for VP Racing C12 Racing Fuel at 0-1500 ft altitude, 70-85 degrees temperature, 32:1 pre-mix oil ratio. Yamaha engineers put considerable thought into developing a motorcycle that would be both dominant on the racetrack and user-friendly for developing riders looking to bridge the gap between recreation riding and competitive motocross. The bikes appear to be tuned from the factory for coastal cities like Seattle, WA. There is a slight bog in clip position 1 but not so noticeable when warmed up. Your 43-74 needle suggest you may have a later model bike (2011-2021) with the long stock View YAMAHA YZ125 2021 specifications and parts and accessories. Like other off-road bikes in the 2021 model lineup, the no-compromises mentality of the YZ125 shows through – main jets, pilot jet – JDJetting custom needles and clip – JDJetting Sticker – Installation charts and instructions. Compare with the YZ125 Build. 15 in. Air screw was at 1. PWK AIRSTRYKER 38mm CARB w/Jet Kit (Long Body) JDKH08 $ 799. Search Carburetor parts using manufacturer microfiche assembly diagrams. ENGINE. Add To Cart Quick View. While it probably helps to avoid fouling, you are sacrificing a lot of ' roll-on torque*' by running such a small #35 pilot jet. 5 (Kawasaki part 16025-0002) About Press Copyright Contact us Creators Advertise Developers Press Copyright Contact us Creators Advertise Developers 12/29/2021 Well, we finally got our hands on a new 2022 yz125 for some initial baseline dyno runs. I ride anywhere from 300-4000ft usually. 2021 YAMAHA YZ125 Service Data (Detail) Basic Information Suspension Page 1 2022 OWNER’S SERVICE MANUAL YZ125 Read this manual carefully before operating this vehicle. There's always mention of pilot jet, needle/clip and main jet experimentation but I don't think anyone has yet mentioned trying a leaner power jet. It has a Inverted Fork Front Suspension while the Rear Suspension consists of The YZ125 represents an important evolution in Yamaha’s two-stroke lineage. MSRP. 7mm +- 1mm, later models is approx 8mm, they stated several times to set to 8mm for my bike. Universal Mikuni Needle Valve and Seat by WSM®. Kudos for helping the guy. and pretty sure that the settings for the 2011-15 models are: #40 pilot jet, 6BFY43-74 needle, #430 main jet. Any two stroke oil will work fine, but stick with 32:1. YZ85 2021 motorcycle pdf manual download. Yamaha Here are the stock YZ125 jetting specs: Main Jet: 410 Pilot Jet: 40 Needle: 6BFY42-74 Clip: Third from top Air screw: 2-1/4 turns out Note: Yamaha delivers every YZ125 with an optional 6BFY43-79 Specs; 2021; Yamaha; Off-Road; 2021 Yamaha YZ 125. 5mm above the bowl's mating surface) using the clear tube method. The 2011-15 stock needle 6BFY43-74 is the 'half clip richer' optional needle from the 2006-2010 models, First thing I would do, as whyz said, is move the clip on the needle up to the 2nd position from the top (3rd is stock). Here are the technical details from the owner’s manual for tuning the carburetor. I could never figure out if it was a lean or rich bog I feel on the bike running 62P, 162M, NYCF-2. Rating. Start with the airscrew at 2 turns out and you will be within ¼ turn + or – from the optimum setting. Page 133: Change Of The Heat Range Of Spark Plugs View and Download Yamaha YZ85 2021 owner's manual online. Skip to main content Upgrade to enjoy this feature! Vital MX fantasy is free to play, but paid users have great benefits. The kit comes with instructions and charts that carefully walk through the installation process and Universal Mikuni Needle Valve and Seat by WSM®. This top-grade product is expertly made in compliance as per the service manual's specs (10mm +/- 0. Plugs choke shaft holes when installing a primer kit. I'm pretty sure they changed the needle number in 2011 and later models and I preferred the '08 needle out here on the west coast. You must be logged in to post a comment. 835mm) minus a 43-75 needle (2. ) Pilot Air Screw Stock Setting – European Models: 1-3/4 Turns Page 1 2021 OWNER’S SERVICE MANUAL YZ125X Read this manual carefully before operating this vehicle. – main jets, pilot jet – JDJetting custom needles and clip – JDJetting Sticker – Installation charts and instructions. We then played with the carb more and had some luck changing out the leak jet and going richer again on the main I put a deposit on a 2021 YZ125 last March, but my dealer never got any more bikes. I have a 2021 YZ125 thats all stock except for a Pro Circuit RV Works pipe and Ti-2 silencer. Sorting. Edited June 13, 2022 by mlatour. 5mm Compression Ratio: 8. Add To Cart. Our test riders had a blast on (High RPM) Air screw tunes the pilot jet. Also for: Yz125. Bike w Original 2021 Yamaha YZ125 Parts. 0 # 1509939409. We set out to learn more about the new generation YZ125 and build a trick bike ready to hit the tracks. Then go from there. We are your #1 source for Yamaha Vintage Motorcycle Parts. Out of stock A good starting point is the 2008 stock jetting for a USA model YZ125. Add Power and Performance. General riding conditions Had the same problem. 38mm H-Series Carburetors for the YZ 125. Specifications DIMENSIONS Overall length 2135 mm / 84,1 in Overall width 827 mm / 32,6 in 825 mm / 32,5 in - 2022+ Overall height. What jetting are you running, needle and clip setting. any 1C3-part number prefix also an indicator of a carry over part from the 2005-2021 YZ125 engine. pilot jet needle main jet but only after setting the carburetor's fuel level, note that the manual specs actual measured fuel level which requires a special tool, not float level (tool can be fabricated with a spare bowl plug) Reason is, albeit a small amount but the pilot circuit is still feeding fuel at high rpm. In a class all about horse power the pre Smarter Shopping, Better Living! Aliexpress. Off-Road . On the Yamaha, you should be right around a 48/50 pilot jet, with a 180 main jet, and the CCL needle in the #3 clip position. I am running the stock main jet, and pilot jet of the 125XC (470/32. I'll have to ask about this "Version 1" of mine. With that size main jet I'm guessing the carb was replaced with a Keihin as the stock Mikuni TMX38 would run a #430 or so main jet. I can’t get the y3 needle yet, but with the air leak fixed I’m at 58 pilot, with a 165 main, the nycf needle in 2nd position and 1 1/4 turns on the air screw it’s The James Dean custom jetting kit is designed to improve throttle response throughout the range by using specially made multi-taper needles. YZ250 (00-23) / YZ250X (16-23) $ 195. This made the bike much better, we noticed the main jet slightly lean on heavy loads so also went to a 165. com On my 2024 YZ125X I’m running the JD trail spec but using a 60 Pilot to get rid of the lean bog (recommended pilot is a 50). My jetting; My jetting closely approximates that of the 2018 KTM 150xcw. $6,599. Bike runs really, really good. Robinson Anyways, IMO, the needle is more of the culprit hereso you need to address that at the same time as the pilot. – four main jets. btw, my bike's factory float height was at 6mm, JD said yup, it comes at 6mm from If the bike sputters or sounds rough when giving it throttle, raise the clip (lowering the needle) until it runs cleanly. 5 AS 1. Last Main Jet – European Models: 380 – All Other Models: 350: Jet Needle – European Models: 6DHY56-75 – All Other Models: 6DHY53-75: Jet Needle Clip Position: Third (3rd) From The Top: Throttle Valve Cutout: 6. View and Download Yamaha YZ125 2021 owner's service manual online. SKU: JDY021 Categories: 2 STROKE PRODUCTS, YAMAHA PRODUCTS Tag: YZ 125X. Log in. 95. It's been trail ridden by a novice girl, so a little bit of spooge is expected, and she is Page 157 ENGINE ADJUSTING THE PILOT JET ADJUSTING THE JET NEEDLE Therefore, the fuel flow is balanced at The richness of air-fuel mixture with On the carburetors used in the each stage of throttle opening by a the 2021 Yamaha YZ125 Carburetor Jets & Needles. 00 inc GST. 1 x Jet Needle; 1 x E-Clip; 1 x Air Screw; 1 x Air Spring; 1 x Main Jet #410; 1 x Slow Jet #40; 1 x O-Ring; 1 x Throttle Screw; Fitment Information. Identification. Edited December 12, 2021 by tekcor I'll probably give JD Jetting a call too, and see if these JDJet Kit needles will work with this particular carb and needle jet. 080mm versus your TX125 : S-7 needle jet (2. I went up to a 440 main with some minor improvement. 1:1 Fuel Delivery: Hitachi Astemo® Keihin PWK38S carburetor Transmission: 2021, through July 25th, 2023 and all MY23 and MY24 snowmobiles. Specs Photos & Videos Compare. Page 1 2021 OWNER’S MANUAL YZ125 Read this manual carefully before operating this vehicle. View YAMAHA YZ125 2021 specifications and parts and accessories. Specifications. Year. Anyway found my answer from JD Jetting for float height, all Mikuni TMX38 is 8. This is my opinion on Yamahas new yz125x and how I feel it performed after 20hours of riding enjoy! View and Download Yamaha YZ125(V) owner's service manual online. 75mm) = 0. Mainjet: 430 (410) Pilot jet: 40 Needle: 6BFY43-3 (6BFY42-3) Clip: 3rd from top Air screw: 2-1/4 turns out Note: The new mainjet and needle were supplied with the bike last year; now they come Took the mikuni tmx carb off of my 2021 yz125x to replace the jet block gasket and needle seat o ring that are known to have problems. I'm trying to help the guy who reads this thread and doesn't have a 400 main jet in his YZ125. Here are my jetting specs in TX: Elevation 500', Temp 80-90deg Main - 330 (350 stock) Needle - 1st slot from top of needle (stock is 2nd from top) Pilot - 50 (stock is 45) 1 turn out Changes to the bike that have affected the jetting: ProCircuit Pipe & Silencer V Force 2 I have ridden the bike in 35-40 deg weather also and each jet went one richer. Page 1 2021 OWNER’S MANUAL YZ250 YZ250X Read this manual carefully before operating this vehicle. 10-1 Identification numbers clean- steam-jet cleaners. If you search my threads I have posted high hour 125 piston pics with various oils. 5 out. You had a great suggestion with the app - I'm going to check that out. Type. Very roughly, here's what the needle's attributes affect relative to the fuel metering: root diameter = 1/8- 1/4 throttle The manual for the 2005 YZ125 indicates that the carburetor float level should be checked using the special Yamaha tool that replaces the float bowl drain with one that has a nipple on it and a piece of clear plastic tubing for observing the level of the fuel with the float bowl in place. 9-1 Consumer information. The more mods you put together that are meant to improve a certain area of the powercurve, the better result you will get. 30:1 fuel ratio The bike is brand new with less than 10 hours on it. Just as our hearts can accumulate blockages over time - a carburetor can gather deposits / wear out / see its settings drift. I am pretty new to jetting by feel, so please forgive my noobie questions. I'd be tempted to start with the very best stock settings Yamaha ever had with the same carb on the 2006-10 YZ125 and fine-tune from there. The owner of the bike also has a previous generation yz134 we built for him which has become his favorite bike in the stable of 250f's, 350f, and 450f. This will lean out the mid a little bit. Yamaha 2R has been the best in my comparisons, but these days I think they all work well. YZ125(V) motorcycle pdf manual download. Make sure that you have the motor up to normal operating temp before adjusting the airscrew in 1/8-turn increments until you find the Read your service manual (it should have been included with the new bike along with an extra needle, main jet and a few tools) as there is a handy jetting chart in it showing the stock settings are intended for a range of about 60°F to 80°F at sea level. This would be for warmer weather +60f, and sea level to 2500'. This is with 40:1 Motorex premix and 50:50 YAMAHA YZ125X (23-24) quantity. (1 groove down) Rich mixture Raise jet needle clip position. Right now I am at the second clip position on the needle. Standard Clip Position. Also for: Yz85n 2021, Yz85lwn 2021. Up Didnt you get a few jets and another needle with the bike wen you bought it?? 165, 162 main 72 pilot The jd jetting kit specs in the kit with thier needle. – a needle clip. These are more highly developed and fine-tuned than stock jetting parts. This leads to inefficient fuel delivery / reduced performance / potential engine damage. MJ 490 PJ 32. 2020 Parent Company. EBC Brakes® HJ™ Hex Main Jets. Offering worldwide shipping from Japan. Save Quote. Here are our 38mm Mikuni TMX jetting specs: Main jet: 430 Pilot: 40 Needle: 6BFY43-3 Clip: 3rd from top Air screw: 2-1/4 turns out Notes: On our full-race Pro Circuit-built Ryan Villopoto replica say my YZ125: S-4 needle jet (2. 2~10. Powered by a 125cc 2-stroke, liquid-cooled single cylinder, the bike is designed by the Japanese manufacturer for everything from weekend motocross to national and world class competition. 5-2. On our built-out YZ125 race bike, Schnikey used a 62 pilot, 165 main jet and a Yamaha Y3 needle, which can be bought through Pro Circuit, in the third clip position. Compare with the 2024 Yamaha YZ 250. 75 out. Sort by. Universal HJ™ Hex Main Jets by EBC Brakes®. But none if it will matter much if you don't learn how to jet your YZ125. Mr. 2024 2023 2022 2021 11/24/2021 10:19am The correction factory from 86F to 32F at sea level is about 0. 185 main, 60 pilot, Red needle in 4th clip. (1 groove up) • 1/4–3/4 throttle Lower jet needle clip position. But we found the bike is jetted a little rich most specifically on the pilot and needle trending. – main jets, pilot jet – JDJetting custom needles and clip – JDJetting Sticker – Installation charts and instructions Be the first to review “JDY021 - Yamaha YZ125X (23-24)” Cancel reply. Everything looked okay but replaced them anyway with jd jetting gasket and o ring. 1 - 30 of 45 results. Japanese Online shop of motorcycle parts and accessories. The kit comes with instructions and charts that carefully walk through the installation process and the stock settings are: #40 pilot jet , 42-74 needle / 3rd clip, #410 main jet. They do say that the kit covers from 2001 to 2021 YZ125, so I guess they fit Version 2 and Version 3 carbs. Discussions. jody’s true story of the pitiful 1992 water-cooled cz 125mx 1992 yamaha wr500: how the “air hammer” became the “maytag” 2025 motocross action 250 shootout: suzuki, triumph Reviews, ratings, specifications, weight, price and more for the 2025 Yamaha YZ125 Bike. Excessive ing, and polishing will also give you a advice on what products 175 main jet 48 pilot jet stock needle 2nd position air screw 1. Pictures. Spoke with JD Jetting, their words, float height check is just as accurate as fuel level/wet check. set the air screw at 1. 06%. Bottom line: Best YZ125 Mods. JDKH47 – Keihin PWK AG Carb Jet Block O-ring $ 16. 2017-2021 Yamaha YZ125 (All markets) 2022+ Yamaha YZ125 (2007~) Yamaha YZ125 (2017~) Yamaha YZ125 (2022+) Models Yamaha YZ125 Monster Energy Yamaha Racing Edition (All markets) Yamaha YZ125 (2005+): specs. Rebuilding your carburetor is like giving your bike a new lease on The 2021 Yamaha YZ125 and all other motorcycles made 1894-2025. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright DetailsThe All Balls Racing Carb Rebuild Kit is the heart surgeon for your motorcycle's fuel system. The needle is OEM stock. 2021 YZ250x fouling plugs with the stock jetting. 8 mm (0. Pilot Screw Opening = 2-1/8 (turns ou JD Jetting jet block gasket kit 2002-2021 Yamaha YZ 125 / o-ring repair rebuild. Make Model Year ; YAMAHA : YZ125 : 2022 : Related products. Now that NorCal is receiving its much needed rain, I am going to be off the bike for a week or two. Up-Sells Products. YZ125M2 LIT-11626-34-28 B0V-28199-12 Page 2 Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause Hey all! A little while back i started a thread looking to make my 125 a bit more trail friendly /topic/967798-2004-yz-125-trailenduro-mods/ So i decided to start playing with my jetting. 74mm) = 0. Rating #1 of 17 Yamaha Off-Road Motorcycles. 0 Fuel 55:1 OR Solid jetting if you're someone that doesn't live on top end. Engine Type: 125cc liquid-cooled 2-stroke; reed-valve inducted Bore x Stroke: 54. Crisp down low out of turns pull. NEEDLE VALVE SET Part Number: JET, PILOT (# 45) Part Number: 4KM-14142-45-00 Required per assembly: 1 Note: AP: Looks like the ktm 300 and my 2021 yz125 use the same #4 slide so I'm having a really hard time not filing it just to While you are at it do the jet block gasket with the JD Hiya mate just curious did you use the same jetting settings and needles ect or did you just do the mods drilling drain plug ect I got a 2007 yz125 thinking The 2021 Yamaha YZ 125X is a Off-Road Style Motorcycle equipped with an 125cc, Liquid Cooled, Single-Cylinder, Reed Valve, 2-Stroke Engine and a 6-Speed Manual Transmission. Put the carb back on and bike barley started then wouldn’t start at all. 820mm) minus a 43-74 needle (2. The problem Im having is a bog anytime the throttle is snapped wide open quickly with a load on the engine. Anyway, I 2021 YZ125, stock pilot and main jets, and stock jet needle at stock position, float height came from factory at 6mm, which should be at 8mm, so I adjusted it to 8mm. YAMAHA YZ125 (01-21)/YZ125X (01-22) I used stock jetting of 410 main, 4th clip position from the top and a 40 pilot jet with the 6CHY5-80 needle for 70 degrees and 0’ elevation. YZ125XM LIT-11626-34-08 B1B-2819U-10 Page 2 EAM20161 Read this manual carefully Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are Buy your Carburetor Kit - YZ125 - 2005-2021 - YZ125X - 2020-2022 - Repair with Jets from Mikes XS. 5: Pilot Jet: 35: Starter Jet: 80: Valve Seat Size: 3. My hope for 2023 is Yamaha will update the YZ125 air boot for the Keihin carb and adjust the baseline jetting accordingly. This top-grade product is expertly made in compliance with stringent industry “Pro Circuit’s R&D technician, Mike “Schnikey” Tomlin, spent hours dialing in the jetting and came up with Pro Circuit’s new OEM-spec YZ125 jet kit. Is Japanese Universal Part: No. Not having that, is there a measurement that can be taken with the bowl removed, 2020 Yamaha YZ 125 pictures, prices, information, and specifications. Though, my 2021 YZ250 was a monster yesterday at Argyll MX. 5), but changed my needle jet from an s-7 to an s-4, and the jet needle from a 43-75 to a 43-74. Title I own a 2010, the stock settings for the 2006-10 (*North American models) are: #40 pilot jet, 6BFY42-74 needle, #410 main jet. For four-stroke bikes, our jetting specs are for premium pump gas at 0-1500 ft altitude at 70-85 degrees temperature. This kit includes the YZ 125 specific carburetor and a throttle cable. – comprehensive detailed instructions with color photos. 085mm meaning my initial thoughts were wrong as your needle circuit is actually a tiny bit richer than mine right off-idle. The 2021 YZ125 motor was more bottom end oriented with a good transition to mid power band but didn’t have the top end needed to be a class leader in horse power performance. Needle jet S4 (KTM part #55431021400) Air screw 1. A big-bore (144cc) quite often responds to leaner settings than a 125 so it may not be jetted too rich for a stock bore. Rating #1 of 15 Yamaha Off-Road Motorcycles. Edited January 21, 2021 by mlatour For two-stroke bikes, our jetting specs are for VP Racing C12 Racing Fuel at 0-1500 ft altitude, 70-85 degrees temperature, 32:1 pre-mix oil ratio. 5 turns out. Frank!MXParts Keihin PWK carbs Keihin FCR parts Keihin FCR rebuild kits Keihin FCR o-rings & gaskets Keihin FCR needles & jets Adapters Yamaha YZ 125 Performance Carburetor Jet Kit Custom Designed to your Exact Specifications at time of order. Log in or register to post comments. Recently started trail riding my YZ125 as well, 30:1 with a #35 pilot, needle in second clip position but, a 2025 YZ125 SPECIFICATIONS. If the bike runs good when your pinning it, (revs out good and holds strong power) don't worry about the main jet. . *Now with the Addition of our Patent Pending XCELERATOR metering rod that gives a significant boost in low RPM torque (up to 20%) Looking to reduce and ideally eliminate a bad spooge issue on a friend's 2002 YZ125 and seeking some advice on a good needle and pilot jet combo. Jet Needle Groove Position Adjustment. Standard Carburetor Settings: . YZ125 2021 motorcycle pdf manual download. bike rips on the top end when revs are high, but the low-mid I bought a 2002 YZ 250 and I wanted to move everything back to stock so I could jet it to my area, the PO moved the needle(N3EJ) clip up to the top position (leanest), so I lowered it to position 2 and the bike would bog between 1/4 and 1/2 open throttle, clip position 3 was even worse. We recommend Maxima Castor 927 High Performance 2-Cycle Oil. Note that I'm using NYCG-2, not NYCF-2that's 4 needles leaner!it's the same taper starting location as for trail riding, especially with inclines, slightly lower than specs may be beneficial. I'm guessing the bike runs pretty crisp on the top (like doesn't miss/sputter) so – main jets, pilot jet – JDJetting custom needles and clip – JDJetting Sticker – Installation charts and instructions Be the first to review “JDY020 - Yamaha YZ125 (22-24)” Cancel reply. 5 turns out to start out. 0mm x 54. (Low RPM) and the needle and clip position is really more halfish throttle. YZ125N2 B4X-2819U-10 LIT-11626-35-29 Page 2 EAM20161 Read this manual carefully Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are View YAMAHA YZ125 2001 specifications and parts and accessories. We’ve spent countless hours of testing to determine which settings work best Main Jet 290 1986 Pilot Jet 45 Needle STOCK Clip Position 3RD Air Screw 1. By the time the main jet sizing comes into play, the needle's clip position is less of a matter but rather it's profile/taper. tzo mbmxn guc pqihalzi erartg jnaamyhw ilpryo lklahhsk rlivi ibug