2. LV-10 CARBON FIBER. LV-10 CARBON FIBER for APRILIA TUONO V4 1100/FACTORY 2021 - 2023. All directions will differ slightly but the goal here is to restrict the flow of air in the test lines to the point where the relative vacuum can stabilize, but the flow is so restricted that it will negate the violent pulsing of the indicator. For a better experience, please enable JavaScript in your browser before proceeding. Hope this helps some of you that are close but, just can't get it. John Willis founded a publishing company in 1993, co-writing and publishing guidebooks in Portland, OR. No hesitation and idles nice and smooth. The thing that still won't be entirely clean doing it that way will be the carb diaphram and slide but if it's running good don't mess with it. This tab has a spring the holds the valve that opens and closes the inlet port to the bowls. Carb Jetting. A dirty air filter can also cause backfiring. Assuming you have a Mikuni carburetor, here are the steps to clean it: 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. (Note: Resistors from Radio Shack - in the Drawers $1 or less each). New New New. 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. You will need is a hose that you will attach to the fuel inlet port; try to keep this hose no longer than 12 inches as the closer to the carburetors the easier it is to use. I have thoroughly tested these and they have performed flawlessly. With a strong light shining into the back of the throat, adjust the IDLE screw until you can just see light on the "arc" you made in the front of the throat of the first carb. 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. Repeat with the brass screw in the top of the bowl to expose the needle inside your carb body. 9. ) Wiggle the float bowl covers loose and remove them. That's my $.02 anyway. 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 Going up 1 more size on the mains made all the difference in the world on the top end. Follow all of the instructions below, including the use of jetting chart and simply purchase the jets listed. My setup is: '07 Classic Cobra Slash Cut Slip-ons Comet BAK Altitude : 1058 feet, The Barons air kit arrives with a jet kit for the 1100 Mikuni carbs. Individual parts are available from many sources including Harley Davidson. 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. --------------------------------------------------------. Was: $9.99. 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. Keep in mind you still need to vacuum synch the carbs once they are back on the bike. 2. Once you have the carburetors assembled and installed on the bike you will find that adjusting the PMS screws and idle speed has greater sensitivity and dont forget to sync the carburetors to each other. This will work the same if you are using dial gauges, a mercury tube type gauge or a Morgan Carbtune. Remove the two float bowl covers by unscrewing the corner screws with a hex-head driver. 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. Yamahah VStar 1100--sudden problems appear. I always re-check the synch once the carbs are in the bike with a manometer but doing it like that while the carbs are out will keep it from being way off when you first fire it up.". Remove the Fuel Tank. With a little patience and some elbow grease, you can get your V Star 1100 running like new again. If you have a V Star 1100, you may have experienced carburetor problems. With expertise in marketing, publishing, advertising and public relations, John has founded four writing-related ventures. Armed with the knowledge that the main jet only effects the 3/4-WOT range, which was the flat spot in the throttle range, I put the stock needles back with 2 total shims, and upped the main jet size to 117.5 front & 115 rear. Why the difference? If theyre old or dirty, they could be the cause of the backfiring. will cause less "bounce" when measuring/synching - larger ID means more fluid / weight to move therefore less "bounce". Remove the two vacuum plugs. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Was it a good idea? Its a done deal! You can do all of this if you want, but the easiest method is listed above. 3. 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. Anytime you modify your engine, you can expect the carburetor may have to be tuned. Reset the IDLE screw to original position. (Other kits are less expensive too). XVS1100 1100 XS V Star VStar Custom Carburetor Carb Stage 1-2-3-7 Jet Kit for Yamaha . 8 Library. NOTE: This is a "How To" guide for jetting the Mikuni carbs on the V Star 1100. There was still one cyclinder not firing, so I opened the drain screw on it while the bike was running and sucking cleaner still and that forced cleaner into that carb as well. So if you set it at 12mm..you should double check the setting. The bottom of the float is shaped with a curve and we want to find the peak or the highest part of this curve. Riders Seat Single Allen head bolt on a Classic, the Customs seat was held on by the seat bracket. 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. Carb Jet Cleaning Tools Carburetor Wire Cleaner Set For Motorcycle ATV Parts (Fits: 2008 Yamaha V Star 1100) $8.99. Avoid having this issue by reading into properly STORING YOUR BIKE. I too had the same thot, especially after i spent $600 on full tune up just 3 days before the leak startedIt is your over flow valve that is leaking and since you gave your carbs a bath in solvent i'm assuming , a piece of debris has probably found its way into the seat and allowing to much fuel to pour in, that was my problem thankfully, however new needles and seats aren't very expensive and since you have no problem taking those carbs off do it again break-um down to the bowl and replace the neccesary parts. However --I've taken individual pipe AFR ratios with a pod kit and aftermarket pipes (which still used the cast elbow) and found them to be dead even. It goes into much much much detail. 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. Drain carbs, open 4 drain screws then close. The information below is for reference only. I filed down the ring shank to make removing it off the bike tube easier. Ok. Look inside the holes for junk in the carburetor. 1. You need to be a member in order to leave a comment. While the V-Star has never quite reached the cult status of its competitors from Milwaukee, it's certainly developed a strong following among those who chose to forgo the orange-and-black. Keep a wipe rag under the line as some fuel will run out. A good picture of how/where to measure - and the popsicle tool - thanks to oldfrank. The only purpose of these shut off solenoids is to prevent excess fuel from dumping into the catalytic converter in the stock exhaust during normal riding. In This video we are removing and rebuilding the duel carburetors on a 2004 Yamaha Vstar 1100 Motorcycle. Yamaha XVS1100 carburetor rebuild cleaning or jet kit DO IT LIKE PRO! Driving Passing Signals Light Bar For Yamaha V-Star Vstar V Star XVS 1100 Custom. 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. Cold pipe is how I found which one wasn't. Try raping each carb on its bowl to unstick it. Make a new harness to eliminate the fuel cut off solenoids . YOU GOT LUCKY! I installed the recommended main jets of 115 front & 112.5 rear, with Barons needles on the 4th notch and PMS set at 4 turns out. When both gauges read the same, LIGHTLY rev the engine two or three times and measure the levels again. Making More Power - Comparisons. clean everything as necessary as you put the carb back together. 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. 17.5. Careful not to use 120lbs pressure, you might end up with parts in areas where they do little good. I think the ethanol is screwing the pooch here, as I've never had the problems I'm having with small engines over the winter! Carb Jetting. This is not optional.it is mandatory to insure proper tuning. (right rear seam & left front seam). Refer to Table A for ALL other recommendations!!! They serve no other purpose and are only on bikes manufactured from 2005 (california only), 2006 (federal) - 2009. Reassemble the diaphragm mechanism in the reverse order or removal. Clean or replace it and see if that does the trick. Provided are 8 3mm float bowl screws, a screw for the removal of the PMS plug, 2 Barons needles with e-clips. 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. The main reason we see people adjusting the float level is because they bought a Max Air intake kit. 2. It is rarely necessary to purchase a "jet kit" to correctly set up the V Star 1100 carbs. Basically a exhaust that creates more vacuum will use up the fuel creating a lean transition from needle to idle on deceleration. Pipe is How i found which one was n't double check the setting -. California only ), 2006 ( federal ) - 2009 tested these and they have performed flawlessly other and! Exhaust that creates more vacuum will use up the fuel creating a lean transition from needle to idle deceleration... 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