endstream endobj 75 0 obj <><><>]/OFF[]/Order[]/RBGroups[]>>/OCGs[110 0 R]>>/Pages 72 0 R/Type/Catalog>> endobj 76 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Type/Page>> endobj 77 0 obj <>stream Bolt down to the desired position. Click here for racing performance variator kits. Copyright 2007 - 2023 Scooter Dynasty, LLC. Increasing air flow through an engine is the goal. Turn the Air/Fuel Mixture CLOCKWISE 1/4 turn and wait about 30 seconds to allow the engine to respond to the new setting. But flat or round slide carbs tend to be less complicated than CVK style carbs so they are easy to work on and tune. Click here for high performance ignition coils. Somewhere around 10-12 grams would probably be a good starter experiment for heavier go karts. you can only adjust the idle and air/fuel screw on these carbs. To lower the float level: Carefully bend the tab downwards slightly. Anything not listed can be left hanging. Once you find the setting where the RPMs begin to drop, turn the Air/Fuel mixture screw about 1/8 turn COUNTER CLOCKWISE and that should be close to the ideal Air/Fuel Mixture setting. Note: this will probably be. Close the jet by turning it clockwise slightly, and then ride-test. If you don't, you want to set the speed to a low idle. Unfortunately, cleaning our carb didnt help. YOU WANT THE HIGHEST IDLE OUT OF THE FUEL RATIO SCREW YOU CAN GET. Also, too high of an RPM can be annoying while cruising with low engine loads. Specifically, the Mikuni TM24 is the carb a lot of people use on their GY6 swaps. In addition to the front driver pulley, the rear driver pulley can also be recalibrated with different clutch shoe springs to vary clutch engagement RPM, and also the main driven compression spring can be changed to a stiffer spring which also effectively boosts engine RPM under driving conditions. There are a number of ways that this can be done. Oil Cooler - Extend the life of your GY6 motor and add on this simple to install. Also, it reduces fuel consumption by increasing the burning efficiency! you will need to upgrade your belt to a Kevlar belt to accomodate the extra torque from the rollers weights and torque spring. Use in addition to coil, racing spark plug, magneto, and other items for maximum electrical performance. On the spiderbox 150, is there a picture somewhere on here for the layout of the many hoses that need to be connected to the carb? If you find your top-end RPM's have fallen off a bit, or if you experience lagging or surging, it is probably time to re-adjust the carb jets. CONCLUSION:Because of the popularity of the GY6 engine in the scooter world, there are many mod kits for gas scooters and go karts to boost GY6 engine performance. I have change stator, 3 infact. The downside to these carbs are they require more tuning and are more susceptible to weather changes. Note:This kit does require machine work for proper fit.Click here for high performance cylinder kits. Back roads and highway shoulders are great for this. GY6 150cc Ignition Troubleshooting Guide: No Spark? Tuning by color is the more simple way to tune although in many cases, more risky. Carburetor Gy6 150cc http://amzn.to/2y7tqBc Donate to Virberello for Parts https://rb.gy/gzrtitChinese Scooter Service Manual https://amzn.to/2LBfWb8Hell. Many we talk to attribute this to ethanol content in the gasoline. 3) IDLE SPEED ADJUSTMENT: The basic idea of adjusting the CVK carb is to set the air/fuel mixture screw to provide the highest idle setting possible. 49ccScoot.Com Scoot F.A.Q. I tested the auto choke and it works fine. between high, higher and even higher pitches. In total a 150cc scooter will go between 50 and 60 mph depending on the model. Turn the high needle so that you know it is running rich. All rights reserved. How Fast Can a 150cc Scooter Go - Conquerall Electrical Ltd You should see light coming from the end of each one. All trademarks on the site are the property of their respective owners. The adjustment for the carb is also blocked..is there a way around that? Current Stabilizer - It connects to the positive and negative terminals of the battery. Introducing RC Scale Crawler Parts and Accessories - SFTRC, Howto: Build a Custom 1/10 Scale RC Crawler, Howto: Honda Ruckus GY6 Stretch Kit Install. This is the Small Fast Things definitive guide to GY6 150cc carburetors both stock and aftermarket. Instagram FeedPlease check your feed, the data was entered incorrectly. Turn out number of turns 2 3/4 - 2 1/4 Step two: Adjust the throttle by adjusting the screw to the prescribed idle rpm. Click here for LED lights. If in doubt, err on the rich side with extra fuel to help avoid engine damage. http://www.buggydepot.com/buggy-tech-center/read/150cc/0/9/howhit-150cc-gy6-vacuum-line-diagram.html, Thanks Travis. %%EOF Scooter gy6 150 not charging and it boggs down, the shops are trying to drain my pockits. Turn the Fuel Ratio Screw Counter Clockwise 1/4 and wait 10-15 seconds to allow the engine to catch up with the new setting. It is surprising how well of a job a small 150cc engine can do at moving an adult around on a scooter or even a heavy go kart. Ignition timing is when the spark plug fires relative to the position of the piston (and crankshaft/flywheel). . High Performance Intake Manifold - Polished aluminum and a must if upgrading from a stock 24mm to a high performance 30mm carburetor. Yerf Dog, Crossfire, etc) dont have to worry about this. Click here for high performance exhausts. The filter was crappy and let dirt by. In order to post comments, please make sure JavaScript and Cookies are enabled, and reload the page. We bought out all of Tomberlins inventory, and have nearly all parts available on our main site. When you start adjusting the carb, the air fuel mix could be too rich, or too lean. The fuel also has to be atomized as much as possible (i.e. Thanks for this layout Travis, appreciate it sir. Click here for belt size specifications. The idle screw controls the engine speed when idling, while the low speed and high speed screws control fuel mixture at those speeds. 1. :%p_OnT;^ Airbox side of carb-air. Remove the two screws holding the choke/throttle control on the gas tank. The pilot screw adjusts the fuel mixture when starting up from cold. Your email address will not be published. Can you help me with info. There's a small spring loaded screw which adjusts the idle speed. If you have a tachometer, setting the speed is easy. Time stamps to each adjustment in the description.Further reading about carburetor jetting and mixture adjustmenthttps://www.thejunkmanadv.com/motorcycle-carburetor-jetting.htmlBUY MERCH! Lastly, it has an auto fuel enricher for easy starting. Record your top speed, hum to yourself or otherwise document how fast you went. It stabilizes the current allowing for quicker firing during high RPM's. Its a 07 Tank urban racer 150. Try these two things if your Buddy is not running or hard to start.Parts Used: www.scooterwest.comBattery Part # YTX7A-BShttps://www.scooterwest.com/yuasa-ytx7a-bs-battery-buddy-people-150-ytx7a-bs.htmlFuel Line \u0026 Filter: GP65212010004https://www.scooterwest.com/buddy-125-150-with-iron-tank-fuel-filter-assembly-out-of-stock-with-genuine-08-30-17-01-59-13-jpc.htmlFuel Tap (Petcock): GP6523000000https://www.scooterwest.com/buddy-50-125-150-fuel-tap.html also make sure all 3 (50cc) 4 (150cc) bowl screws are tight. The first is the adjustment of the idle speed. Check the wires behind the fuse holder and the charging jack. The only small carbs I have ever seen that used an air-adjustment low-speed circuit, were Hitachi's. They were used on some Yamaha models for about 10 years. These may be included in some mod kits for gas scooters and go karts, or you can often buy one by itself. This guide to tuning a carburetor will explain how to correctly adjust the gas/air mixture. GY6 Air Mixture Adjustment While dialing in the air/fuel mixture, you will most likely have to adjust your idle speed down a bit. There's a small spring loaded screw which adjusts the idle speed. Take a 5 or 10 minute ride first. Depending on elevation, a 125, 128, or 130 might work well with a high flow air filter and exhaust near ground level. The ATV sounds good when running it but gas leaks from the bottom of the carb, so we are now getting a new carb and hope this solves the problem. If it starts to go down, turn it back to get the maximum idle speed. It can feel like driving your 5-speed car in 3rd gear on the freeway. This is done on most scooters using a screw adjustment on the other side of the carburetor as shown below. My scooter will not start Make sure you have fuel getting to the carburetor. b. Home| PageSpeed score of Adjusting Air/Fuel Mixture page. If you are thinking about upgrading your GY6 150cc carb, the only real aftermarket solution is a Flat or Round Style Slide Carb. Click here for high performance spark plugs. How To Replace Carburetor On 150Cc Scooter - YouTube This will empty the carburetor, without the mess or hassle of draining the entire fuel system. Most importantly, it is always better to err on the rich side since no damage will be done to the engine. Racing Clutch & Bell - If you are going to upgrade the springs (available in 1000 lbs, 1500 lbs, and 2000 lbs), torque spring (1500 lbs), and roller weights, We have limited expensive using it, but hope to have more exposure to it on an upcoming build. You may have to go through this process a few times to get the optimal level and riding performance. Before taking anything apart, be sure to drain the fuel from both the gas tank and the carburetors float bowl. Because carburetors have a number of overlapping systems, each with its own adjustment range, tuning them to give the desired mixture over the engine's operating rpm is a step-by-step process. SCOOTER TROUBLESHOOTING AND MAINTENANCE - SuperiorPowersports.com The small pilot jet inside of these small carburetors tends to clog if you leave gas in the carburetor without riding for 2-3 weeks. If the engine RPMs drop on the FIRST 1/4 turn from the starting point, turn the screw back to the starting position and wait 30 seconds until the engine responds, then go to #2. If it does go out of adjustment lots of things can happen. Just remember, that too lean of an air/fuel mixture can increase engine temperatures and cause engine damage. Locate the low and high RPM jets on the side of the carb - they are usually marked with a L and a H. Turn both jets completely clockwise ( to the fully closed position). HT65C: Baja Heat Mini Bike - CARB. This would be considered a clone or knock off carb. It would probably be best for you to bring in your stock jet so it can be visually matched with the a new one that is the right style. If the idle changes after you spray the WD-40, there is an air leak. In some cases it may be necessary to let it soak overnight in carburetor dip. Replacing a Carburetor - Jacks Small Engines I cant really get in to it because of where I live. Check your spark plugs to see if you are running lean or rich under wide open throttle conditions. They said my cdi was bad, then after that they said my coil was bad and spark plug.I paid $200. Use a pointed tool to push out the . Pulley or MRP. So, what exactly are we adjusting, and why are we adjusting it? To raise the float level: Carefully bend the tab upwards slightly. Guide to GY6 150cc Carbs - smallfastthings It's right next to the throttle control which is connected to the twist grip on the right handlebar. ***If you enjoy watching my videos, please show your support by SUBSCRIBING, posting links to my videos on other websites \u0026 blogs, rating a \"THUMBS UP\", and watching my video playlists. Set the idle around 1,000-1,400 RPM if you have a tachometer. The other one is a smaller hose that comes off the plastic body at the bottom, where you actually connect the carburetor to the housing with the hose clamp. The valves must be adjusted properly (.004 intake, .005 exhaust) and you must have a strong spark. When tuned to the level of the highest performance, a two stroke engine will be running in a slightly lean(too much air and too little gas) condition. The air/ fuel screw probably has a solid brass plug that needs to be drilled out to adjust. Heavier roller weights decrease engine RPM. There are measurements you can also use but that is the "seat of the pants . Post by motomech onAug 18, 2008 at 11:33am. The instant you twist the throttle, the valve opens and starts letting fuel into the motor. If the valves are way out of adjustment or there isweak (or no) spark, no amount of carb tuning will make the engine run well. 2. Adjusting the CVK carburetor found on most GY6 engines is pretty easy, but you have to have a couple things sorted out before you start or its a waste of time. Most mod kits for gas scooters will also come with new parts for the CVT. Click here for high performance intake manifolds. This can cause bogging over bumpy terrain and dying out when coming to a stop. None of these things are good. Proper performance gains can only be achieved with proper carb jetting and adjustment and is not a "one size fits all" solution. If your engine idles but then slowly stops running, your low needle "L" is too far open. 138 0 obj <>stream endstream endobj startxref How To Tune Carburetors, Step By Step | Cycle World This features is great because it offers excellent throttle response and power control. It comes standard with a CVK style carburetor usually in a 24mm or 26mm intake size. Im not sure if you guys sell these. BuggyDepot.com Articles and Guides to the GY6 150cc. The scooter is running very poorly im on a fix income. Youll find the drain tube hanging off of the very bottom (drivers side) of the carburetor. Support us! For very dusty and dirty off road conditions on go kart applications, an oiled Uni foam filter is probably the best way to go. How to Adjust a Roketa Carburetor - Gone Outdoors Taking a look at your spark plug can give you a pretty good idea which it is, but its simple enough to just try adjusting in both directions that its probably not worth the time and effort. Click here for high performance spark plugs. Click here for instructions on how to enable JavaScript in your browser. How Do You Adjust a Carburetor? - MotorBiscuit.com If the RPMs go up, repeat step 1 in turn increments until the RPMs begin to drop. If you want to advance your ignition timing, then make sure the unit you get actually has the advance programmed into it! Carburetor description: PD24J Manual choke So you'll remember how it goes back together. Adjusting Air/Fuel Mixture - ChuckusLife LED Lights - By using these LED lights, you are conserving battery usage. IM going to try some testing and get back to you. We had to hold the throttle wide open to get it to start. That will give us a place to start. Required fields are marked *. Click here for high performance camshafts. 23 CARBURETOR IDLING ADJUSTMENT AIR ADJUSTING SCREW ADJUSTMENT Step one: Turn on the air adjusting screw in the turn out by the prescribed number of turns. I believe that would be a fuel adjustment screw. On most cars, you'll need to remove the air filter to expose the carburetor and adjust it. remember on the bottom of all theses carbs is a drain, ether screw or nipple coverif the screw is not tight or the nipple cracks you will get a leek. I hope this help. The same if there is a leak in one of the valves. You will need to drain the bowl, disconnect the fuel hose, throttle cable, vacuum hoses if equipped, unhook the choke or enricher/bystarter, disconnect the oil injection hose if equipped (2T), and remove the carburetor from the air box or filter and the intake. Weigh your stock weights using a precision scale and select new rollers weights either lighter or heavier - depending how you want to change your engine RPM range. Mixture, Jetting adjustments and how the. Your email address will not be published. Adjust the screw until you reach the maximum idle speed with the engine running smoothly. This is true of just about any mass produced engine which have compromises that are driven because of manufacturing restraints like time and cost. There are four screws on the carburetor that need to be adjusted: the idle screw, the low speed screw, the high speed screw, and the pilot screw. GY6 Carburetor Float Level Adjustment Guide - Buggy Depot Now I cant shut it off. Fast enough so that the engine doesn't stumble or stall, but slow enough that the clutch doesn't engage and try to move the scooter forward. Look for hole connectors on handlebars. Now connect the choke's electrical leads to a 12v power source. Explanation of the air screws VS fuel screws regarding the idle mixture. Baja Motor Sports | Owner's Manuals - Arctic Cove Lift the front of the ATV and attach the two front tires. 150cc 3-wire Ignition Switch Pinout (Crossfire 150 and 150R), BDX Heavy Duty GY6 Mount for Ruckus Installation Guide, GY6 Carburetor Float Level Adjustment Guide. In all, it is a great carb to use if you want a low maintenance carb that has a few auto features for ease of use. One method is to reposition the ignition pickup that is located next to the flywheel. It is a more expensive carb and has the same great throttle response but is a little more fickle when it comes to tuning and the jetting only comes in Mikuni specific sizes. Regardless of what machine you own, performance upgrades can help increase the power output (and fun factor) of your go kart or scooter! If off, bend the little tab that pushes on the bottom of the float needle valve until the float is level. Most 125cc 150cc GY6 carburetors have a valve immediately next to the drain tube that can be opened with a flat-blade screwdriver. Can You Put a 150Cc Carburetor on a 50Cc Scooter?
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