Below are other options. 7. ) I also found the way the. And the engine. Carb Jetting. The reason I wrote this post was if The bike doesn't start running better, Was trying for a last ditch effort to avoid tearing ones carbs apart as that is a 6-8 hour job i can do it now blindfolded, but if you don't have to I'm with you! I know what your saying though about rust/condensation and corrosion. The fuel line is a over flow from the carbs for just this cause. Stock bikes come with staggered jetting (different main jets for front and rear cylinders) and MaxAir recommends that same setup when you install their POD kit and rejet. Then, adjust to factory specs. Assuming you have a Mikuni carburetor, here are the steps to clean it: Posted by LauriekiliangmC; Latest reply from Mige; LauriekiliangmC # I've got a 2001 V Star Classic with 3900 miles. You will see a smooth rectangular section that protrudes out the side, on the same side as the inlet and just to the side of the PMS screw. Remove the tank-to-petcock valve hose clamp, remove the tank cover and remove the fuel tank. 5. ) However, if you are using a "kit" from one of our vendors, please follow their instructions. Take tank and top center air box off. Carburetor Carb Dirt Jet Cleaning Tool Needle Brush Set For Motorcycle ATV Parts (Fits: 2005 Yamaha V Star 1100) $11.69 Was: $12.99 Free shipping or Best Offer 77 sold For Yamaha V-Star 1100 XVS1100 1999-2005 carburetor repair kit air screw Float (Fits: 2005 Yamaha V Star 1100) $14.33 Free shipping or Best Offer . If the spark plugs look good, the next thing to check is the air filter. Boot connection to air-box (front cycl. 4.1 out of 5 stars 6 ratings | 7 . Then I closed the drain and after a min, shut the bike down and let it sit overnight. New New New. The bike is is running like a top now. Was it a good idea? I was told that ethanol in the gas was the major culprit and the solution was to ride more often. Assuming you are referring to the 1999 Yamaha V Star 1100 Classic: It seems that stock pilots (17.5) are working well in most 1100 applications with a pod set up. Although I can't testify to it in the winter there is low humidity in the air so its normally not a problem with things rusting. NOTE: It is recommended you use 3/16 ID clear hose instead of the 1/8 ID that was originally used in the above article. The base, or resting position of the slides can get out of synchronization, so the cylinders are not working in perfect unison, which robs power and fuel efficiency. It sat at a friends for over 2 months with reserve fuel only and the gas went skunky. 4 Repairs 5 Modifications. Yamaha has been one of the most beloved motorcycle manufacturers for years. Sick Mick*: "I just put together some "SSD" (Shutoff Solenoid Delete) kits for 2006 - up V Star 1100's. Assuming you have a Mikuni carburetor, here are the steps to clean it: 1. Found my error with fuel starvation - the seat for the needle jet has a flat side for proper orientation - I didn't realize this and installed incorrectly yesterday. Personally I put Sta-bil in everything that is going to sit for more than a couple weeks. 1. Soak all of the parts in carburetor cleaner for a few hours. That's my $.02 anyway. -- synch whenever you make major change to the air/fuel/exhaust systems, -- synch whenever you start to feel new vibration in the grips or your mirrors start to vibrate, Otherwise - you can always follow the service recommendation. Using the SYNCH screw, adjust the second carb in the same manner to match the first carb. If its too rich or too lean, it can cause backfiring. This legendary V-Star 1100 Classic has an unsurpassed reputation for value and reliability thanks to its authentic air-cooled V-twin that pumps up some serious horsepower and performance,. Remove the four diaphragm screws, being very careful not to strip them. LV-10 CARBON FIBER. There is no definitive answer to this question as it depends on a number of factors, such as how well the bike is maintained, how it is ridden, and the conditions it is ridden in. . hope this helps, good luck! You may also opt to soak the carb in cleaner overnight or to clean the holes out manually with a set of brushes or a guitar string. This will get you very close to synched. The bold note below will tell you which way to turn the screw. 2. ) All made in Taiwan. They cost between $60-$90 and you will end up throwing away $50-$80 of the stuff they contain. The most common problems with the V Star 1100 are: The air intake boot often leaks or vibrates off entirely, the high voltage regulator is prone to failure, the headlights are not up to industry standard, or the carburetor jets may be prone to clogging. Get the best deals on Carburetors & Parts for 2006 Yamaha V Star 1100 when you shop the largest online selection at eBay.com. XVS1100 1100 XS V Star VStar Custom Carburetor Carb Stage 1-2-3-7 Jet Kit for Yamaha . Other than that, it's about what I do if and when I have a problem. Visit the 6 Sigma Store. I would never do a final cleaning with canned air. Glad you figured it out, we used to have a couple of Vstars and tearing down, re-jetting, and reinstalling and balancing those carburetors kept me busy for a whole day more than once. 3. For occasional riding at higher altitudes, most riders have no major issues with the standard jetting, however you may need to adjust idle speed slightly. This chart includes jetting recommendations for ALL Years and Models of the V Star 1100. Was: $9.99. Anybody familiar with this? Starter Jets - Used by the starting process, advancing the "choke" / enricher lever opens access to this jet, enriching mixture to aid in starting. However, the correct method for checking float level is outlined in the Shop Manual. 7. Copyright 2023 Leaf Group Ltd. / Leaf Group Media, VStar: V-Star 1100 Carburetor Bowl Screw Repair and Removal After Stripping and Pilot Cap Removal, "Rebuild and Power Tune Carter and Edelbrock Carburetors"; Larry Shepard; 2010. 3. ) Free LeoVince T-Shirt with LeoVince & Muc-Off Cleaning Kit. ( Slip-ons, or Full Systems). Plastic 3/16" connector to connect to vacuum tube from the carb. The least time in it the better! Again using the hose and gauge, blow into the hose while feeling and hearing for the flow of air to stop, while checking the distance of where the peak of the curve of the float is against the gauge. 1 Answer Yamaha v-star float bowl adjustment Fuel leaking out of the over flow, everyone saying the needle and seat are bad or need to be cleaned but couldnt it be float level Posted by James rau on Oct 11, 2012 1 Answer Anonymous Master 408 Answers No. AND the bike must be level, side to side, and NOT leaning on the stand. And the engine idle speed should be set to its correct range. It is also good practice to check the synch at least once a year. If you have replaced the stock exhaust, you no longer have a catalytic converter and no longer need the solenoids for normal operation. This can be frustrating, but there are ways to fix the issue. Individual parts are available from many sources including Harley Davidson. Google Sites. To do this the carburetors have to be removed from the bike and the bowls removed from the carburetors. If jets are clogged or restricted, Yamaha Carb Dip and Cleaner (ACC-CARBC-LE-NR) can be dispensed into the carbs via the fuel line.Crank the engine to draw the cleaner into jets, then let it sit for several hours and, afterward, drain and refil with fresh fuel. Once you get the bowl mechanism back together, test for movement before you install the float bowl covers. Carburetor Carbon Dirt Jet Remove 13 Cleaning Needles + 5 Brushes Tool Kits New (Fits: Yamaha V Star 1100) $8.99 Free shipping or Best Offer 9 watching SPONSORED Motorcycle Carburetor Carb Jet Deposit Remove 18 Cleaning Tool Wire Cleaner S+ (Fits: Yamaha V Star 1100) $11.89 Free shipping or Best Offer SPONSORED 11. Haven't had to tear them carbs apart yet,,,, but that may happen some day. Soak all of the parts in carburetor cleaner for a few hours. How Do You Clean a Vstar 1100 Carb? Was it a good idea? (see picture below). With a stock of more than 250,000 used motorcycle parts, Baboon Motorcycle Parts is About This Topic. Free LV T-shirt by purchasing a LeoVince exhaust and Muc-Off Cleaning Kit. This is not really a big deal as it can be solved doing a comprehensive maintenance, something I do anyway on this 2001 Silverado edition. Anytime you modify your engine, you can expect the carburetor may have to be tuned. 833 94K views 4 years ago Yamaha VSTAR 1100 - XVS1100 Maintenance and Repair This is the first in a two part series on the complete disassembly, cleaning and reassembly of my dual Mikuni CV. There is no need to remove it from the bike, but it must be loose to access the Speedometer lead connector. The difference between the two gauges should not be more then: 1.33kPa (10 mmHg). Ok. Reinstalled them and as soon as I open the petcock, get a gasoline leak. 8 Library. Clean as necessary. Make a new harness to eliminate the fuel cut off solenoids . Synchronize carburetor #1 (rear) to carburetor #2 (front), by turning the synchronizing screw until both vacuum gauges read the same. Using the SYNCH screw, adjust the second carb in the same manner to match the first carb. . I have thoroughly tested these and they have performed flawlessly. Pull the float pivot pin out and gently pull the float out of the carb. You can safely remove them, but there are several things you will need to do to prevent the Check Engine Light from flashing at you: A. Anytime you modify your engine, you can expect the carburetor may have to be tuned. the bench synch is merely to get you close to get the bike running. Starting with a 20 pilot and 2.5 turns out, try to clean this up by opening the screws 1/4 turn at a time. 5. Fuel Shut Off Solenoid Wires - They Break Easy - How to Fix. All carburetors need maintenance from time to time. LV-10 CARBON FIBER. Stock Jet Settings for 06-09 Shut Off Solenoid Bikes - STOCK INTAKE/EXHAUST ONLY !!!-. 4. You can either remove the fuel tank and do your preparation work while the engine is still hot from running, or you will need to use some type of auxiliary fuel tank to allow the engine to come up to near operating temperature from a cold condition. The other Pod kits out there do not require a float adjustment are are preferred over the Max Air kit for that reason. One of the carbs has a stuck float or needle is stuck. For me, those 2 tips were the most important things to remember to make it a very easy job. Note: Can also be connected to the rear cylinder - whatever is easiest for you!). There are hundreds of different jetting and needle set ups.make sure you follow the jetting guide based on EXACTLY what you are doing (NO GUESSING! Where the floats have not been previously adjusted, there will be a gap between where the float closes the valve and where the gauge lines up with the crown of the float (more below). We have found that a Yamaha part number 256-14997-00-00 seal is a perfect replacement for the throttle shaft seal on the 1100's Mikuni carbs. The canned air is only a prop.Leak testing is important, you will notice the jig. You do not have to remove the AIS to eliminate backfire. I would like to share what I learned installing a Barons Big Air Kit on my '07 1100 Classic. (right rear seam & left front seam). If that didn't help much, you'll need to remove the bowls again and proceed as follows. This will help prevent sucking the gunk into the jets. The first thing to check is your spark plugs. . A dental mirror may be of help. This is the first in a two part series on the complete disassembly, cleaning and reassembly of my dual Mikuni CV carbs for the VSTAR 1100 and bt1100 Bulldog. The carburetor vacuum ports are on the ducts which leads from each carburetor into the cylinder head. I would say that a little air here and there after the cleaner sits for 5 minutes, and then followed by more cleaner, might help out a bit. Seat Bracket (not necessary on Classic. Clean or replace them and see if that solves the problem. Carb Carburetor Rebuild Kit Yamaha XVS1100 V-Star VStar 99-06 Ref.18-5192 This item is made with High quality materials. Why did Ford use two-piece spark plugs? -----------------------------------------------------------------------------------------------------------------------------------------------------------------------, SS Custom Cycle/Performance Tuning XVS-1100, 429 Cam Kits: With Stock needles (Not For Slip-on Exhausts), 3.25 to 3.75 turns out on stock PMS with stock float level & 20 pilots (Start at 3.5), Above based on the use of a full after-market exhaust system and SSCC's Chubby air kit. Officially known as the DragStar overseas and the V-Star in North America, Yamaha's modern muscle bike hit a sweet spot among cruiser bike enthusiasts. That should take care of any residue in the carbs. If so, where does the hose go? -- and if you do NOT have such a gap, you will have to pry up on the tab. Note that after spending the same day on the Delorean AC I said a part was an 'orifice tube' and not emulsion tube. He studied economics, art and writing at Portland State University and the Pacific Northwest College of Art. It'll take it a while for it to really clean . You have just modified the distance that the float will close. Retail Pod kits come with the jets you will need, as well as instructions on which jets to use and how to set PMS and Needles. Altitude Impact - The jet recommendations in the above table are for altitudes up to around 4000'. Like I believe skydoc_17 said it's maybe a 50/50 thing. 3. For a better experience, please enable JavaScript in your browser before proceeding. Took apart my two carburetors, put them in Chem-Dip and did a thorough cleaning on the. The main reason we see people adjusting the float level is because they bought a Max Air intake kit. Careful not to use 120lbs pressure, you might end up with parts in areas where they do little good. Drain carbs, open 4 drain screws then close. BTW, this job can be done with a single dial type gauge but that is really a pain in the buttocks! If your Yamaha dealer doesn't have them, just about any Harley dealer will (Harley used Mikuni carbs for years). "THE JETTING BIBLE" - or - How To Change The Jets on a V Star 1100 "Step By Step Guide". And the reading at idle should approximate: 34.7 37.3 kPa (260 280mmHg), 5.) JavaScript is disabled. Two bolts, on both the Custom and the Classic. Skooter Bum, I ready what you said. The NADA Guide value is $3,090 for Low retail and $3,675 for Average retail. 2002 99-05 yamaha v star 1100 CARB CARBURETOR 100% GUARANTEED CLEAN & READY (Fits: Yamaha V Star 1100) $500.00 $20.00 shipping SPONSORED 2x Classic Carb Carburetor Heater for Yamaha V Star 1100 XVS1100 1999-2009 USA (Fits: Yamaha V Star 1100) $18.20 Free shipping or Best Offer SPONSORED Look inside the holes for junk in the carburetor. Spray carb cleaner into hole at the "T" sections of your carbs will be your overflows. Free shipping for many products! If you've done the "POD" modifications or gone to aftermarket pipes, you know those solenoids in the float bowls aren't doing much of anything except hanging there with an ugly wire coming out. Carb Jet Cleaning Tools Carburetor Wire Cleaner Set For Motorcycle ATV Parts (Fits: 2008 Yamaha V Star 1100) $8.99. Making More Power - Comparisons. The problem with removal is that the check engine light will flash a trouble code (57 and 58) if it can not find them hooked up in the system. Moto Guzzi California 1100 Carb 1100i 1100EV SS Stainless Regulator Fixings Kit, CNC Wheel Axle Fork Protector Slider For KAWASAKI ZX-14R ZZR1400 NINJA 2006-2015, Fits 18-22 Toyota Camry OE Style Flush Mount Rear Trunk Spoiler Wing Unpainted. Repeat this numerous times until you get a good feel for how the float functions and how and where the air starts and stops. (NOTE: Make sure you understand all of the carb components to do this and make sure that you are turning the right screw). ", Contact Sick Mick at xsickmickx@gmail.com - Paypal accepted, Forum Thread http://forums.delphiforums.com/yamaha1100/messages?msg=55529.1. Do a few sprays every few minutes to let any dirt and grime become loose. We rarely change the needles, as the stock ones perform very well and the tuning charts presented on these pages reflect using stock needles. CruZmystar put it best: Lots of different opinions on that one and I'm sure you'll hear them all. Then opening the screws 1/4 turn at a time until the issue is corrected. I just prefer the stock needles. Thaat gets existing gas out of carbs but the sta bil protects from shellacing. 6. Adjust the mixture and see if that takes care of the problem. You'll also need a carb sync. If the stumble starts to return then drop to a 17.5 and start with 3 turns out. Blow some carb cleaner through it or soak it as you did the first. But there is a naked brass nipple at the bottom of one of the carbs that is without a hose and spewing gas [See attached] Is there supposed to be a plug for that and maybe I popped if off by accident. Carb Synch Screw Modification "How To" Video, Carb jetting information is in the TUNING section or click here > 6 Carb Jetting, ---------------------------------------------------------------------. Read the reviews. For pods, add the specified shim below the plastic spacer. Get a Kit From MaxAir - $49 plus shipping. Between the float lobes is a shinny brass tab. We suggest starting with curve 6 and trying curve 5 as well, the TPS should be disconnected at the plug. Obviously you'll need 2 of these. The seafoam with fuel stabalizer won't hurt. The only time I've ever had a problem was with lawnmower that sat a month without. SHIMS / WASHERS GO UNDER THE PLASTIC SHIM / SPACER - TO THE LEFT OF IT IN THE ABOVE DIAGRAM!! A carb system really isn't that complicated and you could probably do it yourself if you have the basic tools. Jets are SMALL MIKUNI. There are numbers in parentheses in the chart below (1). Can anyone add or correct any assumptions I have just made? Nighthawk005: I know how you feel but after I was talked through it the first time it all made sense. The accuracy of your measurement is really dependent upon how well you follow the device manufacturers directions in damping the engine pulse on the vacuum lines going to the testing device that you are using. Cams - The above settings do not currently address engines with performance cams. The 6' length gives me plenty of room to connect to the bike. Be very careful not to strip the screw heads. Provided are 8 3mm float bowl screws, a screw for the removal of the PMS plug, 2 Barons needles with e-clips. Identify the jets; they're in the recess where the float needle went in. I will send picture tonight of rule I have it on computer somewhere. 9. ) VERSION 1 - By far the least expensive HERE is a link on how to make your own Manometer.DON'T USE WATER IN THIS! Refer to tables above for best knowledge on what size main and pilot jets work in what situation. Motorcycle Repair, Building, and Restoration. Stock Needles - How They go Together: (Thanks to DSWANZ). A manometer is a device used to measure vacuum pressure. (leave open). Follow all of the instructions below, including the use of jetting . I keep mine right in the middle of the 950 to 1050 rpm suggested by Yamaha. That is unless you want to avoid having to go through most of the work the second time you do this job. 1st of 4 tear down videos: https://youtu.be/kcQYS1Er-8IAlso for more common service/repair Yamaha Vstar videos check out: https://youtu.be/-zw_I5M2pCAhttps://youtu.be/77YLmhXN790https://youtu.be/7lfI9f8OScIPatreon https://www.patreon.com/midnebraskamotorsportsInstagram https://www.instagram.com/midnebraskamotorsports Check out my eBay store at stores.ebay.com/midnebraskamotorsportsShop for parts at: midnebraskamotorsports.comWe Disassemble: Clutch Head Cover Cylinder Piston Stator Points Rotor Magneto Generator Alternator Coil Camshaft Cam Chain Tensioner Rocker Electrical Cases Bottom End Case Set Transmission Shift Drum Fork Gear Shaft Flywheel Starter Idler Clutches Bearings U Joint Yoke Driveshaft Shaft Float Main Jet Bowl Slide Needle Seat Intake and more Assembly Passenger Seat Single Allen head bolt. Remember, this is a very simple process. 473 Answers There is no shortcut for maintenance of the carbs. The bracket that holds the small chrome cover on the left side of the carbs can be clamped into a vise, freeing both your hands for the next steps. Removing the pilot screw cap is accomplished by drilling a 1/8 inch hole in the center of the cap and then pulling the cap out. Otherwise, Yamaha recommends you tune them every 4,000 miles. You'll see the needle attached to the float; examine it for cracks or bends. . -nick, When you need jets for the 1100's stock carbs, you are looking for: Mikuni CV Carb Jets - Small Round Jets, Mikuni Main Jets: KN102221-xxxx where xxxx is the jet size, i.e. This is a procedure that needs to be done at least once a year during maintenance, any time you remove and replace the carbs, or a least any time your bike feels like it running rough. Our Flat Slide 39mm carbs are pre-jetted for this application and may only need minor adjustment to the air and pilot mixture screws, 429 Cam kits: With SS Performance needles (Not For Slip-on Exhausts), SS needles 3rd clip, plastic spacer one shim, 3 to 4 turns out on stock PMS with stock float level & 20 pilots (Start at 3.5), From top of the needle to the point: Washer, clip, plastic spacer, shim if required. It should be your pilot jet? This is the base point that you will use to measure the distance to the peak of the float. Idle Mixture mod, Slide Spring Mod (with CV carb), Carb Schematic, Specifications, Carb Sync Tool build, Carb Cleaning Procedure, Proper Tuning Techniques, and step by step instructions with photos TUONO V4 1100/FACTORY. Received my rebuild kit and installed this morning. Follow the manufacturers instructions!!! No hesitation and idles nice and smooth. Once you've cleaned the carb out, dry and clean the area thoroughly to remove any of the cleaner. On the left side of carbs is the bracket Turn the carbs 90 degrees so that bracket is facing DOWN and set it on level surface. Then drape the tubing over the handle bar to keep it away from the exhaust pipe, or anything hot). The information below is for reference only. Put your tools in your tool box and have a cold one. Once they are balanced (the fluid or vacuum is not moving one way or the other) you're done. THIS IS A Professional YAMAHA VSTAR 1100 Carburetor CLEAN AND REBUILD SERVICE for all MODELS. Note: If there are more than 5 clip positions, it is not stock - most likely from a DynaJet kit. Now this is an issue for you to consider, and a choice for you to make. Ok, You will need to remove the Seats and Fuel Tank in this order: 1. ) Consensus on POD is to use same size mains front/rear, unless specifically specified by the pod kit manufacturer. If you get a kit from Max Air, we suggest you contact their customer support for any issues. 5. So if you set it at 12mm..you should double check the setting. I had a bad gas issue before I put the bike away for winter. In that rare instance, please use table "B". Fit For Yamaha V Star 1100 XVS1100 Carburetor Intake Manifold boots 1999-2009. Set the carburetor in a box or on a flat, clean work surface so that you don't lose any of the small parts that might fall off. Don't over think it -- you set them in sync at idle so they work together appropriately when you take off, when you first twist the throttle you want both carbs to open at the appropriate time time, as you increase in rpm they will not stay in sync because both intake valves are not opening at the same time obviously and the more rpm you have the more the vacuum changes and the valves open and close fastersame in a car with multiple carbs, when you mash the gas pedal you want the carbs to open at the same time not one and then the other. Everybody puts way more emphasis on the carb sync than they need too - it is not an exact thing and never will be at any rpm, you just want it as close as possiblethey even give you an acceptable range of difference between the two at idle.. don't over think it. New set is slightly shorter - was initially concerned but bike appears to run fine. Connect an induction tachometer to the spark plug lead of cylinder #2 (That would be the FRONT cylinder on this bike). Part #: 15248C; Parts Unlimited Part #: 1811-4253; . JavaScript is disabled. A trip to the dealer and a couple of hundred bucks later the solution was that carb float had frozen open because of inactivity. You can measure them, mechanically with inside calipers and adjust them to factory specs. Remove bowls. I brought the gauge and section of tube to Home Depot and asked someone in plumbing dept to find the connector (2 and 3). Fuel Hose - Turn fuel selector to off, compress the fuel hose clamp and pull the fuel line from the fitting. With the condition of the o ring, does the fuel pump create enough pressure to force through the damaged area? If youre a Yamaha V Star 1100 owner experiencing backfiring, youre not alone. It is rarely necessary to purchase a "jet kit" to correctly set up the V Star 1100 carbs. Comparison of stock and and the Pilot Air Bleeds supplied in the Kuryakyn Hypercharger Kit. 2. The new design was How to Clean Carburetors in John Deere D130 Tractors, How to Clean Carburetor in John Deere D130 Tractors. B - Alternatively (and for the less technical minded) there is a great product called Sea Foam. I made a wire harness by cutting the wires about 6'' from the solenoids. Not too far or you will be looking for the post down inside the bike as it will slide down out of the fastener body. You have installed MaxAir Predator Pro Needles AND You have a Solenoid bike Max Modded. Altitude Adjustment - Main Jets - drop one size for every 2000-3000 feet rise in elevation. More info available in the link to the forum thread. Mains - Stock bikes come with staggered main.s. Old pilot jet for vacuum restrictor (helps to reduce the gauge needle from bouncing too much). Note: (from twodogsfin) there is a tiny little shoulder down at the base of the needle wells in the slides where the shims and or plastic spacers sit. --------------------------------------------------------. Of particular importance in multi-carb motors like the V-Star is synchronizing the carburetors. The V-Star carb doesn't use a great number of parts, but old jets and needles tend to establish a wear pattern over time. Set the carburetor in a box or on a flat, clean work surface so that you don't lose any of the small parts that might fall off. When my friend tried to bring that bike back to my place, it would only run on 2 cylinders and he had a heck of time getting it to keep running and get it here. Yamaha XVS1100 carburetor rebuild cleaning or jet kit DO IT LIKE PRO! Do it yourself Motorcycle repairs 14.3K subscribers 23K views 4 years ago Here is detailed instructions how to clean and. Boot connection to air-box (rear cycl. Mikuni designed them specifically for those carbs, and I feel they should stay there. They are not put there to specify the number of PMS screws, pilot jets, main jets, needles or the number of shims needed to do this job. Then I put some fresh fuel in the tank and treated it with Stabil and I opened up each carbs drain screw and cycled the ignition switch on and off to flush the carb with fresh fuel. Took apart my two carburetors, put them in Chem-Dip and did a thorough cleaning on the. ), 4. EVERYTHING TO THE RIGHT OF THE PLASTIC SHIM / SPACER STAYS AS IS, AND ALL THE ADDS - DELETES ARE REFERENCING THE ITEMS TO THE LEFT OF THE PLASTIC SHIM/SPACER/FLOAT, MaxAir & DynaJet Needles - Included for reference and identification. YOU GOT LUCKY! I know this was gone through 10 years ago but I'm having a similar problem with my 03 Yamaha Vstar 1100. 2. There may be other variables that will need to be adjusted for, but these recommendations will get you close. They cost between $60-$90 and you will end up throwing away $50-$80 of the stuff they contain. Why did Ford use two-piece spark plugs? Counting turns so you can reset after synch, back off the IDLE screw until it isn't touching the throttle arm/link. Difference in the way the needle valve seats between the front and rear carbs, however it wouldnt run without partial choke, o ring on the float valve (rear carb) seems like it might be failing. Backfire on decel usually means that it is too lean at idle. Your V-Star's carburetors have a venturi that air flows through. 3/16" ID clear tubing (one end is darker due to staining from oil), 5. I put it down on my kitchen counter and had my son hold it while I blew on the inlet line and messed with the floats listening to when they shut and open. An important tip..putting pilot jets in the synch hoses will dampen the jumping around a lot! Others make there own. The length of tubing is up to you. The factory installs a metal (brass) cap or plug over this screw. Clean or replace it and see if that does the trick. LV-10 CARBON FIBER para APRILIA TUONO V4 1100/FACTORY 2021 - 2023. 06-09 years only. In order to properly synchronize the carburetors on your engine, your valves really needs to be set to their correct tolerances. About 1/4-turn past snug should suffice. link to Why did Ford use two-piece spark plugs? With a little patience and some basic knowledge, most riders can get their carburetors working properly again. I'm also not sure it's a good idea to mix chemicals. Jump to Latest Follow REVIEWS SPECS NEWS CLASSIFIEDS VIDEOS . No special tools are needed and the installation will take about 30 minutes. Going up 1 more size on the mains made all the difference in the world on the top end. Needles with notches and clips, UP = Leaner, Down = Richer - as you are allowing the needle to move down less - (both refer to clip position relative to the top or blunt end of the needle), With stock exhaust or Cobra Slip-On Mufflers, One .020 shim added to raise each needle, 122.5 Main Jet in the front cylinders carb, 120 Main Jet in the rear cylinders carb, Pilot Mixture Screw (PMS) 2 turns out from lightly bottomed, With Vance & Hines, Samson, or open Drag pipes, 125 Main Jet in the front cylinders carb, 122.5 Main Jet in the rear cylinders carb.