1/4 throttle would be the transition from pilot jet to needle with some overlap. The screws are only about 1/4" to 3/8" behind the face of the plugs. As a small thank you, wed like to offer you a $30 gift card (valid at GoNift.com). Honda 16016-MBA-980 - SCREW SET | Partzilla.com, K&S Technologies - 56-2001 - Carburetor Air/Fuel Mixture Screw Kit for sale online | eBay, 2006 Honda VT750DCA A CARBURETOR (COMPONENT PARTS) | Ron Ayers. Carb clean or starting fluid (these will remove paint, wipe it up immediately & blow dry with compressed air. In any case, when drilling the plugs go slow, take it easy, and be very careful not to drill too deeply. start leaning out mixture, (turn in fuel screw, turn out air screw. Thanks for your help. Check for vacuum leaks. . If symptoms improve or disappear, you are lean and need more fuel. "A wise man can learn more from a foolish question than a fool can learn from a wise answer" - Lee Jun-fan. Thanks for all of your information i will definitely put it to good use!!! Your videos are so clear and easy to follow Appreciate what you do. hondashadow.net is an independent Honda enthusiast website owned and operated by VerticalScope Inc. They need to seal the port that delivers fuel for cold starts. If the bike has not been previously warmed up, let it idle until it is warmed up. How do I check the air-fuel mixture if my vehicle doesn't have a carburetor? Come in and discuss any Honda Shadow models: VT1100, VT250, VT750 and the VT500. Item: P338799. Do you think going back will solve the issue or going to a bigger main jet? Don't push too hard or it will go through the plug and hit the screw behind it. You will need to pick up the D-shaped bit to remove the stock mix screw! Hovig's knowledge and hard work have contributed to Funk Brothers Auto winning Angie's List Super Service Award for five consecutive years. 2023 GoldwingA1500 said: I have it set about 800 RPM, which I assume is the line on the RPM gauge just below 1,000 RPM. These screws adjust the amount of fuel that the pilot jets (idle jets) squirt into the carbs. Eventually the screw with the plug attached to it will pop out. i cant even find one online that matches. Put in new plugs and do a plug chop at full throttle to see what color they are. Content on hondashadow.net is generated by its users. . Then start the engine and see where the timing is. So its gonna be a week or less until i can start the bike Gonna go thru the carbs again and double check everything. If he is running lean or rich above 2500-3000 RPM, that screw has no effect. How do the plugs look? The real trick to opening the exhaust in ANY way (punching holes in the stock exhaust or adding aftermarket) is to re-balance the air/fuel mixture. Might be a good idea to check compression. Backpressure is not entirely necessary for the engine to run well, but it does affect power over the different ranges of the powerband. Sounds like you are making great progress. 1/4 turn on the throttle between gears and it is starving for something . Carb syncing is easy and can be done at home for less than $10. For this reason I would encourage EVERYONE who has not done so, to pull the caps on their mixture screws and adjust them. Color: Black Verified Purchase. I can't seem to do the idle drop procedure correctly. Research source, Tip: The factory position for most air fuel mixture screws is usually between 1.5 and 2.5 turns out from being screwed all the way in. On the left side of the carb where the throttle wheel is, right below it you will see a silver plug ( mine had a felt tip marker slash on it, that way they can tell if it's the original I guess) about 1/4" in diameter. Hi Matthew, First Let just say that I appreciate your advice! When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Keep in mind that there might be a welch plug installed from the factory to prevent adjustment. 4.1 4.1 out of 5 . My guess is that you simply need to adjust your mixture screws and all will be well. However, after checking for vacuum leaks & reading a few forums, I came to the conclusion that they come lean from the factory. It usually sits on top of the carburetor. I would suggest you wait until you have had the 600 done before you do any of this. I am still have problems with my bike. The sync screw is a synchronizing screw for your carbs. Hovig Manouchekian is an Auto Repair and Design Specialist and the Manager of Funk Brothers Auto, a family-owned business operated since 1925. Start by adjusting your Honda Shadow's air fuel mixture screw or screws, depending on which model and bike you have. The stock pilot jet for this model is a #38. We are quickly expanding our line so keep an eye. 5. how to adjust air/fuel mixture screws on my 1100 Honda - Honda 2004 VT 1100 C2 Shadow Sabre question. Home sync using a Homemade gauge is going to be more accurate than a shop sync and save $50-$100. No problem! The numbered head allows you to easily keep track of your tuning progress! Also, I do re-install the caps, but drill a hole in the cap that a small screwdriver will fit through 1st. Download the service manual, it should give you an idea of tools that you need. unique traits of plants, animals and humans. and turns out i have one missing. Im gonna try and get to it before the weekend. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. If you have a dual carburetor model VLX pulling the carbs is a little bit more difficult and requires a little finesse as it is a tight fit with limited space to operate in between the frame and the engine where the carbs sit. Not just an occasional pop (that's normal), but that machine gun "firecracker" type popping that started us doing this in the first place! And they were. There is a pilot jet, a main jet, a needle, a slide, and a mixture screw. X The Fora platform includes forum software by XenForo. how many turns out should the mixer screw be out? Make sure idle is low. ), and the right side screw is for the front cylinder (look at the intake boot, same as the left side.). This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. Yea its a pain to get to. Would you say that bikes start to need a little more fuel as the miles add up? Adjusting the mixture screw can affect idle speed, thus requiring adjustment of the Idle screw. Use the other allen in your kit to remove these, or a ratchet with a 10 mm socket. Shop online for OEM CARBURETOR (COMPONENT PARTS) parts that fit your 2006 Honda VT750DCA A, search all our OEM Parts or call at 252-758-3084. That's all there is to it! When changing them out, be sure to remove the stock spring, metal O-ring and rubber O-ring and replace them with the new ones supplied with the long handled mix screw. I think he is pointing to the correct screw. Courtesy of VT750DC.com: All CV carbs follow the same theory to operate. For help removing dual carbs from your VLX and rejetting see the Shadowriders.net Kajima Velocity Install & Stock Airbox Removal. Include your email address to get a message when this question is answered. hondashadow.net is not in any way affiliated with Honda Motor Company, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Pulling the carb(s) apart for a rejet, cleaning, or rebuild is something that gets easier the more you do it, and may seem scary or difficult at first but is a necessary task for keeping your VLX tuned properly and sometimes running right. I have an aftermarket rpm gauge so I can easily adjust this. The first step is to determine if you have an AIR screw that meters air, or a FUEL screw that meters fuel. start leaning out mixture, (turn in fuel screw, turn out air screw. NOTE - For dual carbs, when the mix screw on the throttle wheel side of your carbs (left side of bike when you are sitting on it) bottoms out on the throttle wheel, that is your zero point. I have played with these settings, which seems to help at first and then it goes back to the same issue. Maybe keyster or other aftermarket can save you a bit. With the 42, how many turns out on fuel screw? I also show close up detail . Could also be that the carbs are getting a bit dirty as well. Valves being out of adjustment can cause the bike to run poorly in many ways, popping and backfires being one symptom. The rear cylinder plugs are either fouled or not getting fuel. Drag pipes are called that for a reason. fine for parking in handicap spot in ohio. There is an overlap of all of these items in how they affect fuel delivery. Copyright This is how to add a picture to your signature. So I believe that I should clean the carbs, what should I buy to prepare for this? Wait on syncing the carbs, till it is running correctly and ALL other service issues are resolved. You need to run the engine and warm it up before adjusting the air-fuel mixture screws. When making modifications to the stock exhaust such as punching or drilling holes, or after adding an aftermarket exhaust, it may become necessary to make some adjustments to the pilot jet (idle circuit) air mixture screws to eliminate the "Rice Krispies", the crackling and popping you get when decelerating. Part 2 Balancing the Fuel Mixture 1 Turn the screw clockwise until the engine starts to sound rough. So I went to a honda store, and ordered the part I needed. See the picture below to understand the parts and components of all CV Carbs including how fuel is delivered at idle versus at throttle. Turning the screws should also make a difference. And towards the left side of carb there is an D shaped screw that takes a special wrench. My Dynojet instructions say to replace the plug or put a dap of silicone sealant over the Pilot screws. Radiantz Dual Intensity Turn Signal LED Cluster for Harley Deuce, Drag Specialties 12.5 Wide Ape Hanger Handlebar, Chris Products Deuce Style Signal Kit Review, Arlen Ness Speeding Bullet Market Light Review, Scootworks 1.5 Rear Lowering Bracket Review, Vance and Hines Straight Shots Exhaust Review, Radiantz 3 Inch License Plate Light Review, K and N Stock Replacement Air Filter Review, Thunder Charged Part 1 The Rejetting Teardown, Thunder Charged Part 2 The Rejetting Dissasembly, Thunder Charged Part 3 The Rejetting Surgery. Ok, since I have never heard of this adjustment before Is this the same thing as the "pilot screw"? Before cleaning the carbs, I checked the fuel mix screws to see how many turns out they were set at. See the picture below to understand the parts and components of all CV Carbs including how fuel is delivered at idle versus at throttle. Based on throttle position fuel id delivered from different circuits within the carb. Following the procedure above will take into account any other conditions that exist. But it's very rich there. The one on the right is an old pug from the old carb setup You'll only void the warranty on the exhaust. The punching of the stock exhaust does not require this as the adjustment to the idle mixture screws is sufficient to ensure that the engine does not run too lean (too much air, not enough fuel). Some have expressed concerns about damaging the bike by punching the baffles or adjusting the mixture screws. $1349. This Long Handled Air Fuel Mix Screw for the Honda Shadows makes adjustment to your Air/Fuel mixture an absolutely easy and simple process without the use of tools. idle will . www.ebay.com I have also changed the fuel filter. Your float level will be higher w/o a washer. start leaning out mixture, (turn in fuel screw, turn out air screw. You put out some of the best how to presentations that I have seen. Your email address will not be published. ***If you have installed Stage 3 jetting and the larger Aero #42 slow jets, the factory 2 1/4 turns open is sufficient in most cases!***. The power output has also increased. TJ Brutal Customs. I don't remember the A/F screws having a washer and if you were missing one it should leak fuel. No more burning your hands D-Shaped Bit to Remove Air/Fuel Mix Screw - Honda Shadow VT600 VLX - 99 to 07, burning your hands on a hellishly hot motor. The lack of backpressure reduces power and efficiency in the middle and top end, but does not harm to the engine if the jetting is correct to balance air and fuel throughout the powerband. Facebook. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. 1995 Yamaha YZF 600 R air-fuel mixture screw location. Stay tuned . I'm sure you have heard of "drag pipes". Adjusting the Air and Fuel Mixture 1 Locate the air filter and remove it. A proper adjustment would be done with a tachometer fitted to the bike to monitor idle rpm as per the Service Manual, but here's a quick and dirty way that works. To get to the right side carb, you will have to remove the air box. This Long Handled Air Fuel Mix Screw for the Honda Shadows makes adjustment to your Air/Fuel mixture an absolutely easy and simple process without the use of tools. This can be as much as 1 full turn. The D-shaped Bit allows you to remove the stock air/fuel mix screw from your Honda Shadow VT600! fuel screws will be on engine side of carb slide, air screws will be on airbox side of carb slide. Carb idle mixture screw which way for rich or lean Is this screw a fuel screw (adjusts fuel) or air screw - If I screw it in is that making the mixture richer or leaner? There is a pilot jet, a main jet, a needle, a slide, and a mixture screw. Loosen the screw on the band. Plenty of write-ups. There you will see the holy grail, the brass AIR MIXTURE SCREW! At TJ Brutal Customs, you'll find hundreds of unconventional custom motorcycle parts at affordable prices. What's the problem when I have to pull the outboard so many times before it starts? SOME popping and an occasional backfire is normal. Copyright My tools are stored in the back of my Jeep. This will help you understand the parts of your carburetors. 2014 1992 Honda CBR 600 F(2)N. 0 answers. If you have a good popping going, especially combined with a hesitation on opening the throttle, return to your "shop" and give each screw an additional 1/4 turn open. SO DON'T DO THAT, I'M JUST POINTING IT OUT. Come in and discuss any Honda Shadow models: VT1100, VT250, VT750 and the VT500. % of people told us that this article helped them. Turning in (clockwise) the mixture screws isn't dropping the idle, but boosting it! That is why I cannot guarantee your success. [9] You do not want to hit the screws with the tip of the drill bit. This will tell you the number of turns each was open and give you a new starting point for adjustment. That is why I recommend putting the plugs back in place. I have replaced the plugs, CDI boxes and coils. It was the gold screw, got it adjusted, runs great, "It helped my knowledge about carburetor, I can fish out the problems associated with my tuktuk (tricycle's engine).". However, I have heard reports of people adjusting their mixture screws, and having them subsequently fall out. Finally I checked the intake valves tgey were way off I put them to factory spec and its running 90 times better. Research source, Sign up for wikiHow's weekly email newsletter. Air screw, or fuel screw, they are technically the same thing. The Honda VT600 parts collection are specifically compatible with the Honda VT600 Shadow aka the VLX 600, dual and single carb models. what should i do to fix this? TJ Brutal Customs. Stop the engine. 2. You are basically looking for a metric aluminum sealing washer. All you need is a 7mm nut driver or 7mm socket and you can use this bit to easily remove the stock mixture screw. I also synchronized the carbs. Tinkering with bikes can be a downright disease and its so great to be able to share info. P.s. We use cookies to make wikiHow great. I did the exhaust mod to mine and didn't have to adjust my a/f screw just had to play with the idle some. They have found them set to all kinds of different openings from the factory. Welcome to Honda Shadow Forum. I drilled mine out to accept the blade of my "adjustment" screwdriver and put them back. Follow the beginning of the procedure pull the caps and carefully close the screws until they lightly seat, counting the number of turns in (clockwise) until they lightly seat. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Basically, make sure the. Plus one shim on eAch slide needle It takes off with more power than before but if Im going uphill and go through the gears it is hesitant between gears. How to remove the emission cap-welch plug covering the air/fuel mixture screw with ease so you can fully service the carburetor. It's a 2 hour job and the bike must be left for a couple of days as the engine must be cold when the valves are adjusted. The Honda Shadow service manual states that the fuel screw should be turned out 3 turns initially. It sets up, hold the screw, and comes out easy if you want to "fiddle" later on. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. Im pulling the motor now to do a good repair on the oil leak. Posted September 15, 2005. in is lean,clockwise,out is rich,counter clockwise. amzn_assoc_ad_mode = "manual"; yeah, soon as i get done with the carb clean/sync im going to put them back in and a little silicon just thought it was weird for them to be left in the kit and not put back.. Thanks in advance!! Andrew, the best way to contact me is through email. 1. It also greatly improved the throttle response as it was starving for fuel. The Fora platform includes forum software by XenForo. I rode it about 20 miles today . wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. hondatwins.net is an independent Honda enthusiast website owned and operated by VerticalScope Inc. The heads are about 1/2". I have learned a few things about the ACE 750 that I would like to update everyone with. The fuel evaporates and this causes the engine to not start when compression is achieved. The Fora platform includes forum software by XenForo. Here's how it's done. To use it you'll need to hook up a vacuum meter or synchronization meter to the vacuum ports on each cylinder. "Yes, I really didn't know how to adjust the carb fuel mixture. You probably don't need them adjusted, but there is a slight chance that you have one that got out of the factory out of tolerance and they DO need adjusting. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Example: M4 x 10 (10 mm shaft length) They have no effect on mixture above 1/4 throttle. I would say that carbs tend to get dirty over the years and will cause bike to run leaner. ALPHA MOTO Motorcycle Carburetor Carb Pilot Jet Screw Air Fuel Mixture Screw 110 Degree Adjusting Tool works for Honda Yamaha Kawasaki Suzuki CB KZ GS XS 350 450 550 650 750 850. JavaScript is disabled. 2. My engine and idle are working fine. Read more. Read full answer. It's somewhat complicated and I don't understand all of the details, but some backpressure is need to keep the powerband smooth and powerful throughout it's entire range. Come in and discuss any Honda Shadow models: VT1100, VT250, VT750 and the VT500. Unfortunately, I think they only come with new seats and needles which can run 30-40ea. Forward of it is a brass screw that is the drain screw for that carb. The slip ons will require additional jetting. In most cases they do not need adjusting. Based on throttle position fuel id delivered from different circuits within the carb. Are there any modifications like air cleaner or exhaust? Reinstall the air box and take it for a spin. Free shipping for many products! When installing, turn the screw 'til it stops, but be gentle Don't crank on thescrew real hard because all you'll do at that point is deform the screw and it will be useless. The Air/Fuel screw is for idle mixture only. 250's, 350's and 360's (CB,CL,CJ,SL) - 1968-1976, http://www.hondatwins.net/forums/1-t-restore-running-now-e-advance-ignition.html. Remove the AF adjuster screw, solder the .17HMR shell to the AF screw and then the cable into the end of the shell and epoxy of solder the 45 shell to the other end. I have stock air box on it. Search Fixya . It just turns out that most dealers don't adjust the valves until around 8000 miles. With over 30 years of experience in the automotive industry, Hovig specializes in the process of auto repair and maintenance. First, it is apparent that not all the 750's come from the factory with the mixture screws turned out to 2 1/4 turns open as the Service Manual indicates they should be. Go one size up on your pilot jet and see if that fixes the problem. Enjoy! Order 48s in case, they are pretty cheap. screws. CARB BOWL SCREW - Sold each, modify cart for desired quantity * . Make sure float level is in spec and float needles in good shape. There are many points throughout the Exhaust Mod that you can get popping on decel when you had none before. start leaning out mixture, (turn in fuel screw, turn out air screw. Should you effectively be able to shut down that one cylinder via the mixture screw like on a twin or are fours just less sensitive since each cylinder is only carrying a quarter of the load? This adjustment will trim the mixture so that you can have a smooth running engine. Performance Tuning Kits - Honda Shadow VT600 VLX & VT750, Velocity Stacks - Honda Shadow VLX VT600 VT750 - Dual Carb, Complete Performance Carb Rebuild Kit - Honda Shadow VT600 & VT750 - Dual Carb, Vacuum Plugs for Single and Dual Carburetor Honda Shadows, Shorty Choke Knob - Honda Shadow VT600, VLX & VT750 VT500, Long-Handled Air-Fuel Mix Screw - Honda Shadow, Velocity Stacks - Honda Shadow VLX VT600 VT750 and Kawasaki VN800 - Single Carb, D-Shaped Bit to Remove Air/Fuel Mix Screw - Honda Shadow VT600 VLX - 99 to 07, Stainless Carb Bolt Kit Honda Shadow VT600 87-08 and VT750 98-08, Exhaust Gaskets - Honda Shadow VT600, VT750, and VT1100, Backdraft Exhaust - Honda Shadow VT600 VLX600 88-07, Backdraft Exhaust - Honda VT750 Spirit, ACE, RS, Backdraft Exhaust - Honda VT750 - 2004 & Up Aero Phantom Spirit, Backdraft Exhaust for Honda Shadow VT1100, Magnus V Upsweep Exhaust (Chrome) - Fits Honda Shadow VT600 VLX600, Tracker Exhaust Pipes - Honda Shadow VT600 VLX 600, Builders Exhaust Boss Kit - Honda Shadow VT600 VLX 1988 - 2007, The Acerus - Single Cable Throttle Assembly For Honda Shadow, Malleus Machined Motorcycle Grips - Throttle Sleeve & Clutch Grip For 1" Bars, Curved Bobber Fender - Honda Shadow - Fits Rear Tires 160-170, Holey Shifter Pegs & Brake Pegs - Honda Shadow, 50% Weld-On Hardtail Kit - Honda Shadow VT600 VLX - 88-07, Curved Short Round Bobber Fender - Honda Shadow VT600 & VT750, Dual Carb Slide Breather Filtration Vents VT600 and VT750, Tersus TSG - Motorcycle Throttle & Grip Kit for Honda Shadows, Complete Hardtail Kit for Honda Shadow VLX VT600 1988 - 2007, HI-LO Drag Pipes for Honda Shadow VT600 VLX Steed All Years, Complete Hardtail Kit for Honda Shadow VT750 ACE 1998 - 2003, Libritor Mark I - Universal Solo Seat - Black Leather Padded - Diamond Stitch, Complete Mono Strut Kit for Honda Shadow VT600 VLX 1988 - 2007, Custom Peanut Gas Tank for Honda Shadow VT600 VLX 88-07, Petcock Fuel Valve Plumbing Kit for TJBC Gas Tanks, Custom Peanut Gas Tank for Honda Shadow VT750DCA Spirit 2001 - 2007, Custom Peanut Gas Tank for Honda Shadow VT750 ACE 1998 - 2003, Custom Peanut Gas Tank for Honda Shadow EFI Models - VT750 Phantom, AERO, Spirit, Sullivan Gloves - 80th Anniversary Heritage Shorty, Leather Key Holster - Brass Key Chain with Leather Key Cover, The Spade Leather Belt Sheath for Kershaw Leek, Gerber Paraframe Folding Pocket Knife and other similar-sized Clip Knives, Handmade Made Beaver Back Hat - Limited Collection Custom, Anteris Bolt-On Rear Fender and Sissy Bar Kit - Honda Shadow VT600 VLX, Anteris Bolt-On Rear Mohawk Fender and Sissy Bar Kit - Honda Shadow VT600 VLX, Bolt On Battery Box - Honda Shadow VT600 VLX - Fits 8 Cell Antigravity Battery, Bolt On Battery Box - VT750 ACE - Fits 8 Cell Antigravity Battery AG801, Bolt On Solo Seat Hinge - Stainless Steel, Box Chopper Tail light Weld-On Bracket w/ License Plate Mount, Builders Exhaust Boss Kit - Honda Shadow VT1100 1985 - 2007. The Idle screw adjusts the throttle plate (s) to increase or decrease engine speed at Idle. Another jetting change I made is needle position. This Long Handled Air Fuel Mix Screw for the Honda Shadows makes adjustment to your Air/Fuel mixture an absolutely easy and simple Long-Handled Air-Fuel Mix Screw - Honda Shadow. I have to say that 80-90% of problems I come across are carb related. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Priming an engine is necessary if it has been sitting in storage for any length of time. Coupled with a larger pilot jet, the throttle response has greatly improved. The baffles in our pipes do this. Copyright When it gets tight, get a pair of pliers and grab hold of the screw (vice-grips would work good here) and carefully tug on the screw. The basic process for adjusting an air fuel mixture screw is the same for all small engines, whether its on a car, motorcycle, or other type of engine. idle . The mixture screws are. I bet the timming is slow and the idle speed has to be turned up so much it's running on the transfer slots. Cb350, after purchasing the bike and fixing the carbs I noticed that one air fuel mixture screw is shorter than the other. They are used for drag racing where the major power is needed in the low end of the powerband getting off the line FAST and running for a short distance at top power and top speed. I agree with Texas. However, the consensus amongst the dealers and their mechanics that we have gathered in the forum indicates that very few even CONSIDER touching the valves during the 600 as most say they have rarely seen a 750 that needs the valves adjusted on the 600. Then drove another day then started to run lean so I turned out to 4.5 turns ran great. You could find your engines exact AFR using a special meter, but this isnt really necessary unless you want to be ultra-precise, such as if youre. Repeat the steps above on the right side carb. Start backing out the screw from there. Another method is to place a small dab of silicone sealant or caulk in the hole on top of the screws. (I was intimidated by this task for some reason!) Guys, I have exhausted about every source I can think of trying to find the "D" shaped tool it takes to adjust the pilot screw on newer 400EX/400X carbs. There was water in the tank i got all of it out . For a better experience, please enable JavaScript in your browser before proceeding. Ein verschmutzter Luftfilter verringert den Wirkungsgrad (Leistung) des Motors deutlich und steigert den Benzinverbrauch.Wir empfehlen. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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