Look for hole connectors on handlebars. Mixture, Jetting adjustments and how the. If the scooter idles well and runs fine at low speed, but has problems at high speed, the problem may lie inside the carburetor with the main jet. The scooter shown in this video is a 150CC/157QMJ/Long Ca. 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. Got it fixed. During adjustments, the float should be oriented the same way as it came out of the carburetor. It's located on the side of the carb and adjust either air- or fuel-flow, depending on its position. If the float is level/parallel with the chamber top, the adjustment os OK. If you don't, you want to set the speed to a low idle. GY6 Swapping The Honda Ruckus: What To Expect From Your Swap, How to use an American-made BDX wiring harness on your 150cc Chinese engine. All rights reserved. 2008 ScooterFocus.com | One method is to reposition the ignition pickup that is located next to the flywheel. Some are more powerful than others, while some are not. The only test I did was battery, and its reading 12.99 v. Since I p/u my scooter I dont trust it. Want big power? Click here for high performance CDIs. Not Recommended: Carburetor Adjustment Routine Checkups: My scooter is not charging Make sure the fuse in the scooter is good. I have a Tomberlin 150 Crossfire with a Howhit engine. We were not shutting off the stop cock for the gas when we were not running it (we did not know this that this should be done, lesson learned). Lift the front of the ATV and attach the two front tires. Notify me of follow-up comments by email. Here are 5 ways to find the answers you need: Check out our Repair FAQs below Scan the questions/answers on this page Scan the older repair questions/answers in our archives Search our question/answer database: Ask your unique question using the form below Common Questions About Scooter Repair & Maintenance Take note of how float internals are arranged. Sometimes they come loose. Power drop during transition Recalibrate your CVT (Continuously Variable Transmission). You can hide this element from the settings. Depending on elevation, a 125, 128, or 130 might work well with a high flow air filter and exhaust near ground level. Specifically, the Mikuni TM24 is the carb a lot of people use on their GY6 swaps. Before taking anything apart, be sure to drain the fuel from both the gas tank and the carburetors float bowl. We hope you enjoyed this guide to GY6 carbs. Click here for instructions on how to enable JavaScript in your browser. Anything not listed can be left hanging. YOU WANT THE HIGHEST IDLE OUT OF THE FUEL RATIO SCREW YOU CAN GET. Support us! Home| Click here for high performance spark plugs. This should take around 2 minutes at idle. Method 1 Adjusting the Air and Fuel Mixture 1 Locate the air filter and remove it. Visit my affiliate linkshttp://www.thejunkmanadv.com/current-sponsors.html0:00 - Intro0:22 - Carburetor function and theory of operation2:51 - Carburetor demonstration3:29 - Idle mixture adjustment explained3:59 - Pilot jet adjustment explained4:19 - Pilot jet, Jet needle and Main jet operation explained4:22 - Jet needle and Main jet operation explained4:43 - Main jet operation explained5:08 - Enrichment or Choke for cold starting explained5:52 - Keihin FCR carburetor explained6:51 - Keihin FCR accelerator pump operation explained7:48 - Keihin FCR hot start operation explained Extra diameter and aggressive ramp design for top performance. They come in a raw finish and a more sporty looking black in many different sizes from 24mm all the way up to 30mm. Repeat steps 2-4 until you feel the bog of a lean condition, stop going faster or start going slower. Check that the brake fluid reservoir is horizontal and that the fluid level is: Front brake above the LOWER level mark. What have the shops done so far on the scooter? 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. Your email address will not be published. Explanation of the air screws VS fuel screws regarding the idle mixture. Open the needle by turning it counter-clockwise, and then gradually close the jet until performance is as desired. If the carburetor is so far out of adjustment that the scooter wont start, turn the air/fuel mixture screw all the way in until it stops, then turn it back out about 2 turns as a baseline setting. Use in addition to coil, racing spark plug, magneto, and other items for maximum electrical performance. Then you will have to attach some parts : Install Mirrors Without signal light Take out mirrors out of packaging. 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 most common float-related problem is that the float level is set too high from the factory. Most mod kits for gas scooters will also come with new parts for the CVT. Plug and Play! Stuttering at full throttle The GY6 engine with CVT (continuously variable transmission) has decent performance for it's small 150cc engine displacement. Thanks man, Your email address will not be published. Adjust the high jet until you get maximum RPMs (the highest pitch noise). So you'll remember how it goes back together. Also, it reduces fuel consumption by increasing the burning efficiency! Can you help me with info. I cant really get in to it because of where I live. Is your ride bogging out over bumps, or dying when coming to a stop? The GY6 engine has a magnet embedded in the outside surface which passes by a pickup sensor that acts as the trigger for initiating the ignition spark. The fuel also has to be atomized as much as possible (i.e. i have a crossfire 150r and i got the carb upgrade and now i neex to cut off some of the throttle cable or does anyone know where i can get the right part. Click here for racing performance clutch and bell kits. Regardless of what machine you own, performance upgrades can help increase the power output (and fun factor) of your go kart or scooter! LED Lights - By using these LED lights, you are conserving battery usage. You should see light coming from the end of each one. Another way that people try to increase performance of a scooter engine is to increase ignition advance. So the basic procedure is to set the fuel/air mixture to give you the fastest idle, then use the idle speed adjustment to set the speed to the lowest rpm that gives you smooth running. Remove the air filter and the four bolts holding the air filter base on. Some modules might simply have a higher RPM rev limit. If you are thinking about upgrading your GY6 150cc carb, the only real aftermarket solution is a Flat or Round Style Slide Carb. a. Using a flat-blade screwdriver, remove both of the jets circled in the center. Open the hood and make sure the engine is off before locating the air filter and removing the assembly. Take a 5 or 10 minute ride first. It helps on some models if you have weak lights during idle. The popular GY6 150cc motor that is swapped into Honda Ruckuses and found in many common Chinese scooters is a carburetor operated engine. This is done on most scooters using a screw adjustment on the other side of the carburetor as shown below. We will not be held liable for the outcomes of your mod projects. To be frank, this article is all about making adjustments to your idle mixture and speed. Polished port interior for maximum fuel delivery. I hope this help. this only controls idle to 1/4 throttle Click here to add your own comments Join in and write your own page! 3. Check your spark plugs to see if you are running lean or rich under wide open throttle conditions. 108 0 obj <>/Filter/FlateDecode/ID[]/Index[74 65]/Info 73 0 R/Length 148/Prev 744157/Root 75 0 R/Size 139/Type/XRef/W[1 3 1]>>stream Unfortunately, cleaning our carb didnt help. Twist the pin with pliers to secure the bolt on the tire. Here are the right links: Parts for grey Crossfire 150R: Note: A little gas may spill out of the carburetors overflow tube when you flip it over to get to the float bowl. 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. Racing Performance Variator Kit - We recommend the 115mm diameter inner variator, spacer, and ramp cover either from Dr. Manage all your favorite fandoms in one place! This page is solely intended to be used for information only. HT65C: Baja Heat Mini Bike - CARB. 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. %%EOF 7H<0DJv0H >D0 &`w"j3YH\) V$oE I&E.@< #G710?' Y Stainless and aluminum exhaust has an awesome fit & finish! Click here for high performance carburetors. The first is the adjustment of the idle speed. With that idea in mind, let's look at some ways that the performance of scooter engines can be increased. All trademarks on the site are the property of their respective owners. It was hard to start and would die when coming to a stop after warmed up. You may need to go back to the idle speed screw to lower the idle speed if it's now too fast. If it goes down, turn it back to where you started since you didn't need any adjustment! If it still wont start after that, its time to clean or replace the carb. 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). Click here for high performance cylinder kits. The GY6 based engine found in these scooters and go karts is like most any other internal combustion engine - in that it can benefit from some well directed modifications. GY6 150cc Ignition Troubleshooting Guide: No Spark? If you hear a suction noise, your tank cap is plugged and needs to be cleaned. Scooter gy6 150 not charging and it boggs down, the shops are trying to drain my pockits. Heres my write-up and diagram that will help with line routing. If the carburetor is so far out of adjustment that the scooter won't start, turn the air/fuel mixture screw all the way in until it stops, then turn it back out about 2 turns as a baseline setting. Would appreciate any information. A Skinny GY6 Ruckus Swap featuring the SFT Skinny GY6 Mount with correct stock CVK carb orientation. I hope not to much. These may be included in some mod kits for gas scooters and go karts, or you can often buy one by itself. Tuning by ear is a learned skill since you will have to differentiate. 3) IDLE SPEED ADJUSTMENT: The CDI is sort of the brain of the whole ignition system and changing modules is as simple as unplugging the old and plugging in the new. I am fabricating and going to install a K&N filter. Here's a freebiewe personally run a 30mm OKO carb with 120 main jet and a 38 pilot on a shop built 171cc GY6 motor. If your carburetor is aftermarket came from a lower-price source, you might not have a valve or tube at all. Hey Anders, NGK Iridium Spark Plug - Iridium is a precious metal that is 6 times harder and 8 times stronger than platinum. perhaps your Chinese scooter! To raise the float level: Carefully bend the tab upwards slightly. Try these two things if your Buddy is not running or hard to start.Parts Used: . This can be a big one! 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 First, remove the cardboard box. This will ensure that the engine is protected and properly lubricated while giving us the best performance possible. PageSpeed score of Adjusting Air/Fuel Mixture page. 3) ENGINE UPGRADES for 150cc GY6 ENGINES: 62mm Cylinder Kit - This big bore kit will give your motor that extra CC's that you are looking for. Click here for high performance ignition coils. We do offer a manual inline Fuel Petcock: http://www.buggydepot.com/product/365/fuel-petcock-inline.html, My adult jeep buggy leaks gas ,it leaks out from inside the carburetor and floods out what can I do help. Using a flat-blade screwdriver, remove both of the jets circled in the center. Turn the Air/Fuel Mixture COUNTER CLOCKWISE 1/4 turn and wait about 30 seconds to allow the engine to respond to the new setting. a. Common areas for leaks are between the manifold and the cylinder, and between the carburetor and the intake manifold. "Maikuni" Carb. These carburetors require regular adjustment to ensure peak performance, and also to avoid an unsafe lean condition, which can prematurely damage your engine. The idle screw controls the engine speed when idling, while the low speed and high speed screws control fuel mixture at those speeds. Remove the float pin, push it through using a pointed tool. Make a speed run where you let the engine climb as high as it can in the RPM range. If your Kart has a 2-wire or 3-wire switches (e.g. First remove the two screws holding the top of the air filter on. I tested the auto choke and it works fine. Assuming the engine was completely warmed up and the auto-choke circuit is working properly, its time to remove the carb and give it a thorough cleaning or replace it with a new one. The needle should be clearly visible. Sitemap| Close the low needle by turning it clockwise until a stable idle is achieved. Heavier roller weights decrease engine RPM. This screw changes the air to fuel ratio at low speeds. b. This is probably also not the most straight forward way of doing this. 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. When tuning, make sure that you start overly rich in order to ensure no damage will be done to the engine before the best tune is discovered. 25\ ms<1CI#_ b*wPAPd` Pgg between high, higher and even higher pitches. 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. The stock GY6 can be tuned by changing the main or pilot jets and also via adjustment of the air/fuel screw. After that it would not start and driving lights, come on but go out. The information was collected from many skilled and experienced mechanics and technicians. See the troubleshooting section for more info about lean conditions. Note: this will probably be. Also, too high of an RPM can be annoying while cruising with low engine loads. Where can you get parts for the Tomberlin 150cc. It affects both the user experience and SEO rankings. https://www.buggydepot.com/model/15/1/tomberlin-crossfire-150r-parts.html, https://www.buggydepot.com/model/14/1/crossfire-150-parts.html. http://www.buggydepot.com/buggy-tech-center/read/150cc/0/9/howhit-150cc-gy6-vacuum-line-diagram.html, Thanks Travis. There are even big bore kits that boost engine displacement up to 180cc -- stroker cranks, larger carbs, different intake manifolds, even aftermarket 4-valve heads. Important! The basic idea of adjusting the CVK carb is to set the air/fuel mixture screw to provide the highest idle setting possible. have yerf m#34911. 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. After dialing in the air/fuel mixture, turn the idle speed screw until the engine runs smooth and doesnt try to take off on its own. Inspect the manifold, carburetor gasket, and intake gasket for cracks or other signs of damage, and replace if necessary. Recalibrating your CVT modification will not increase the actual power output, but it has a high performance-to-cost ratio. In that case, use a single strand of copper from an electrical wire to clean out the blockage. Now connect the choke's electrical leads to a 12v power source. The buzzing of the RPM at all times can be annoying to some people. Though they may work the same and borrow many features as brand name carbs, we have found quality to be lacking in some of them and have actually ran into a few duds that just couldn't be tuned or used. Yerf Dog, Crossfire, etc) dont have to worry about this. Camshaft - For better climbing power, use low-end torque. Thats a great idea. We highly recommend you consult with certified or skilled mechanics or technicians before proceeding. This GY6 carburetor inspection video should help you tremendously. BuggyDepot.com Articles and Guides to the GY6 150cc. Small changes in the tab angle will equal out to big changes in the overall float level once reassembled. 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. The scooter is running very poorly im on a fix income. Honda sold four significantly different versions of the Elite 125/150 scooter over its short four year run: Elite 125, Elite 150, Elite 150D and the all new1987 Elite 150. Warm Up the SCOOT for at least 5 minutes. Copyright 2007 - 2023 Scooter Dynasty, LLC. Do Not Sell or Share My Personal Information, 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. The spray should dissolve and remove any blockages caused by old gasoline. 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 you have any questions or comments, use the form below this article to let us know! Many of the GY6 scooter engines seem to use a Keihin style CV carburetor (24mm), so check with a motorcycle shop or motorcycle supply source that sells carb jets. Once you have found a workable setting, open the jet approx 1/8 of a turn to ensure sufficient fuel/air mix. Close the jet by turning it clockwise slightly, and then ride-test. PageSpeed score is an essential attribute to your websites performance. ), it's the carburetor. The carburetor controls all these functions and generally does it quite well. It is a great carb that is inexpensive, easy to maintain, and very forgiving in a variety of different climate conditions. Thanks for the help. I put new coil and spark plug, with the cdi, I thougt that was the problem but i had the old parts, now what had happen i road it to the Scooter shop to buy a stator, shut the scooter off thats when my problem stated. You can get a new one for $50-$60, so if you can't make your scooter run smoothly and you don't like the idea of taking the carburetor apart, you can always replace it! There are measurements you can also use but that is the "seat of the pants . Click here for high performance spark plugs. 2. If you have a 5-wire ignition switch (Blade, Kinroad, Twister Hammerhead, Carter Bros., etc), be sure to come back to the kart to turn your key back to the off position, or your battery could drain. Find the correct side of the mirror connector. This also translates to 80 to 100 kmh. It can make the scooter hard to start, it can make the scooter slow to accelerate, it can cause the scooter to idle badly and stall or it can make the scooter idle fast so that it's trying to go all the time and needs the brake to hold it stationary. Scooter Wiki is a FANDOM Lifestyle Community. If there's any one component that's more likely to go out of adjustment on your scooter (especially 2. Be careful opening the float bowl on one of those, as gas will spill if youre not holding it upright. ADJUST YOUR FUEL RATIO: 1. New carburetor: https://amzn.to/2I6HrIpJets kit: https://amzn.to/2jnt1WEAir/fuel gauge: https://amzn.to/2HM4Tr2Please support my channel by using the affilia. As mentioned above, the stock CVK carb has a diaphragm needle valve slide that meters or lets fuel into the motor based on engine vacuum at different RPMs or operating loads. 0 Remove the carburetor from the engine by loosening the clamp on the intake inlet manifold. Even so, mod kits for gas scooters and go karts are available, and other modifications can be made to increase performance further. If I touch wires together it shuts off but not from switch. If you can put a couple blocks under the engine to raise the rear wheel slightly off the ground, you can just adjust the idle speed until the engine is running smoothly, but the rear wheel doesnt turn until you give it a little bit of throttle. Most 125cc 150cc GY6 carburetors have a valve immediately next to the drain tube that can be opened with a flat-blade screwdriver. Lighter roller weights will increase overall engine RPM. b. Click here for LED lights. In order to perform the check we should follow the following steps: Ride the scooter warm. This does not serve as a howto nor is it a replacement for testing and tuning. https://www.buggydepot.com/model/14/1/crossfire-150-parts.html. BARrOJ_ng %'|NF^t@w Best to error on the rich side (larger jet), because too small of a jet and you could run too lean and damage your engine. hb```e``D@(q ,00p/Sd@OeI(NO|:CKtz+!s 1) TO MAKE THE AIR/FUEL MIXTURE RICHER: Seeing as our 2 strokes rev so high, it only takes a few cycles of bad tuning to seize or render your rings useless. It is a self regulating system which is what makes the stock CVK so dependable and flexible. One is coming from the very back of the motor and has a fairly long hose on it, about .5 in thickness.