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Scooter cvt belt slipping?
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Scooter cvt belt slipping?
significant vibration or shuddering coming from the CVT when the Scooter is first started up in the morning could be indigestion OR an early sign of a failing or worn CVT. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All R. Short video discussing how a worn belt effects your performance, and how to tweak it while it wears out! Ulti. Point 2: Shifting gears with the belt has been a constant mechanism since the 1980s. Locating the Source of the Noise. 5- Overheating problems. Not enough tension when things start to engage, or a too-loose belt that can never get enough tension no matter what the variator and clutch do Torque converter belt slipping Potential Problem: Wrong Belt size and/or symmetry; Pulleys not alligned; Drive/Driven parts worn out; Solution. 6- Check engine warning light due to CVT gearbox problems. from 2004 with 8000 km. I have to give it a lot of gas and it feels as if the belt may be slipping for just a little bit and then it grabs and runs just fine. Advertisement As you learn more about th. 2611 posts · Joined 2008 There is a petcock at the bottom of the cvt cover, unscrew it and see if water comes out Pull the cvt cover and remove the sheave, take the sheave apart and clean it and put it all back together and you will be good to go Maintaining Your Scooter Transmission Checking transmission fluid. Briefly open the throttle fully and note the maximum engine. With a steel belt drive, steel pulleys, and sophisticated electronics all lubricated by special fluids, this transmission utilizes variable ratio engineering to keep the engine running at the most efficient and powerful level possible, right in the power curve sweet spot all. Once I put it back together I noticed what I believe is belt slap in the CVT at idle. If it’s only when you … You'll be likely to see things like glazing of the edges of the belt, more than usual belt wear and dust, possible discoloration of metal parts if it's severe, black marks … Put on centre stand, belt cover off, good clean out of all debris, with cover off run engine at tickover and look at how belt runs in pulleys. The belt engages quickly as usual, but then it's like the. Sadly i tried getting the belt to slip while not riding but it only happened under load on takeoff. Clean and inspect the CVT before installing. However, here are some common signs that could indicate a worn-out or faulty CVT belt: Delayed or Slipping Acceleration: If you notice a delay or hesitation in the vehicle’s acceleration or if the engine revs. *Might even be the bearing from the cvt cover spinning in the case, which will be evident if you start the engine with the cover off. Step 4. Dont take this the wrong way , but 8g rollers & 340lbs are pretty taxing on a 139qmb 5-6g rollers/sliders & about 1500rpm clutch springs. It may vary from manufacturer to manufacturer, but for example, for Yamaha vehicles, the V-belt on a 50cc to 250cc scooter is specified to be replaced every 20,000km. I've never been a fan of belt dressing and it's usually used on contaminated belts to offset the ingrained contamination of the belt to begin with I am actually using a Yamaha Scooter here are some of its specifications Model : Mio Soul i125. However, here are some common signs that could indicate a worn-out or faulty CVT belt: Delayed or Slipping Acceleration: If you notice a delay or hesitation in the vehicle’s acceleration or if the engine revs. Mar 11, 2020 · Hi it,s difficult to tell what's from the sound alone,time for that new belt and a good look a your variator,a good clean always helps,3 common faults,stripping the thread,pinching the belt and wrong assy,check out the tech section good info there,invest in a variator locking tool and torque wrench. Then while threading it over the variator use your other hand to keep pressure on the belt to keep it in toward the very center as it rotates. On a flat surface the bike will go no more than 1 or 2mph, and I've. Change transmission fluid as specified by the manufacturer, usually every 2 years. This contrasts with other transmissions that provide a limited number of gear ratios in fixed steps. If the belt cannot grip the pulleys properly, it will begin to slide, creating this distinctive noise. 2611 posts · Joined 2008 There is a petcock at the bottom of the cvt cover, unscrew it and see if water comes out Pull the cvt cover and remove the sheave, take the sheave apart and clean it and put it all back together and you will be good to go Maintaining Your Scooter Transmission Checking transmission fluid. There was minor rubber marks so I think super light rollers was the culprit. If you see cracks when you bend the belt backward, if chunks are missing, or if the belt sides have a glazed look, it is bad and needs replacing. The tire is slightly taller and heavier, but was enough to make issues with CVT after around 2000KM. Machine is a 2010 Outlander 800R LTD with about 2500 miles with original factory belt. Many different parts compose a system designed to keep you in your seat and in the vehicle, when it is crucial. Seat belts are more. If this doesn’t work, then you may need to move on to the next step 1,016 Answers. Currently, I have an 835x20x30 b. POINT. May 31, 2023 Signs that your CVT belt may need to be replaced can vary depending on the specific vehicle and its condition. 1983 Yamaha Riva 180cc 10 Symptoms of Serpentine Belt Slipping Squealing Noise: The Initial Symptom. By combining the appropriate materials, tension, clamping. Should improve takeoff/launch (Bando etc) cheap belts wont last Mar 27, 2022 · Original Size was 140/70-14. At first glance, tub spouts seem like the least of your worries when designing a new build or bathroom remodel. Remove the outer CVT cover and thread the sensor in with a 10mm wrench. A belt should squeak and chatter if it's running properly, that's an indication that it is clean, cool, and lubricant free. Well overdue for a belt change! CVT belt slippage will likely happen to anyone owning an ATV sooner or later. Premium (aramid/Kevlar®) belts are the best belts you can buy for your scooter! Standard CVT belts are made of OEM-quality or better rubber embedded with woven cordage to provide strength Mar 4, 2023 · 1. SeniorsMobility provides the best information to seniors on how they can stay active, fit, and healthy. We provide resources such as exercises for seniors, where to get mobility ai. 5 rollers and the 629 belt the bike would get up to 42/44mph. Clutch spring are still (800rpm) 3. The good news, at WOT or full power you are not slipping the transmission. take the belt and wrap it around the clutch (rear) and lay over the seat. Learn all about asteroid belts, from their characteristics to what they can teach us. Vego iQ 450 Electric scooter drive belt Kysor Jet scooter drive belt Sharper Image X2 drive belt. CVT belt slipping? ScootDawg's Scooter Forum aa Rules, New Member Introductions, and Forum Information. Replace the belt if worn out, slipping, or every 2-3 years as preventive. Scooter now is at 11,000KM. Slipping, Jerking, and Grinding. Top speed around 35 mph (stock scooter) with me weighing. [102], [103] developed a robust gain-scheduling PI controller based on a linearized slip model to measure and control slip in a CVT while minimizing … The effects of belt wear and how to test on scooter 53 Subscribed 19K views 5 years ago. Hi all, I have a 300cc DT and I have noticed the CVT slipping/jerking just a little, it only does this from 10-20 or so MPH under maybe 4000 RPM. There are other things to think about that Expert Advice On Improvin. Acceleration Hesitation: If your vehicle hesitates or feels sluggish during acceleration, it could be a sign of CVT problems. This video shows a CVT noise problem with chatter and belt vibration from speeds of 0-30 mph. CVS CVS Health (CVS) posted a first-quarter 2023 earnings beat Wednesday morning but set their future guidance below co. Scooter Dealers, The Good and The Bad. If it’s only when you … You'll be likely to see things like glazing of the edges of the belt, more than usual belt wear and dust, possible discoloration of metal parts if it's severe, black marks … Put on centre stand, belt cover off, good clean out of all debris, with cover off run engine at tickover and look at how belt runs in pulleys. There was minor rubber marks so I think super light rollers was the culprit. You are correct to take action and begin the process of identifying the problem if you feel that your CVT transmission is sliding. On a severe-condition bike, the figure is 10,000km, and while there may not be many users who drive a 50cc JOG for 20,000km, 20,000km may not be uncommon on a 250cc XMAX. Bought used, the rear pulley has a slight amount of side-to-side wiggle, so unsure if that is normal or not. SeniorsMobility provides the best information to seniors on how they can stay active, fit, and healthy. Replacing transmission belt. Welding aluminum takes much higher heat than to weld steel because it transfers the heat so readily. Sadly i tried getting the belt to slip while not riding but it only happened under load on takeoff. ScootDawg Forums > Performance :: Maintenance :: Technical > 125cc - 249cc: Drive belt slipping, maybe catching 729-17. If I adjust my idle screw I can get the slap to go away but that makes the idle feel too high when riding. A worn-out or damaged CVT belt can negatively impact the performance and fuel efficiency of your scooter and may eventually cause other transmission components to wear out prematurely. So questions get asked about belt sizes and how do they affect the performance of your scooter. Top speed around 35 mph (stock scooter) with me weighing. Some common causes of alternator problems include wear and tear, a bad battery, a lost ground and a slipping belt. Turn off the machine and let the belt cool. … Post by Jacine onMay 29, 2007 at 10:53am. Replacing transmission belt. And it seems to be getting worse. 2- Control Module problems. hard nipples through shirt It seems to be running fine otherwise. If you see cracks when you bend the belt backward, if chunks are missing, or if the belt sides have a glazed look, it is bad and needs replacing. Set aside the top of the clutch, the spring, and the thrust washer. 5- Overheating problems. You are correct to take action and begin the process of identifying the problem if you feel that your CVT transmission is sliding. An incorrect, poorly made belt will slip, and pulleys should be clean for the belt to slide up and down freely V3 / Sapero Current Max speed 72 mph. I … Do you have a CVT transmission and your belt is slipping? If so, here’s a tip that may help you out in a pinchmore. Should improve takeoff/launch (Bando etc) cheap belts wont last Mar 27, 2022 · Original Size was 140/70-14. Set aside the top of the clutch, the spring, and the thrust washer. Hi, As long as the synthentic oil is of the same grade as specified, but the main reason the transmission would slip is worn clutch plates or lack of clutch plate pressure. Shuddering would indicate a clutch problem to me. Replacing transmission belt. May 22, 2023 · Lubrication: It’s important to note that CVT belts operate in an environment with lubrication, such as CVT fluid. obituaries eau claire wi Rolling on the throttle when coming out of corners instead of flooring it helps too Jun 8, 2020 · Given the damage, I expect the belt is slipping a lot, producing a lot of heat, but NOT producing a lot of motion. There are more and more portable mobility scooters that are being used today by the differently-abled. Atau motor jadi telat merespon," ucap Rudi Kurniawan dari Rudi Motor di. These noises can indicate belt wear or lubrication issues. Jul 12, 2022 · Once I put it back together I noticed what I believe is belt slap in the CVT at idle. Consult your scooter’s manual for the recommended tension. 2- Control Module problems. It is bearly noticeable, but it can be felt, it is always accompanied by a noise which sounds kind of like when your air filter cover is off. 1. Hour-glassing of a CVT belt can come about because of high-gear. Overheating. Dec 19, 2014 · '06 Oort Gray Burgman 650 another parts bike or project, CVT int failure '05 Sonic Silver Burgman 650 body damaged, stripped down/rebuilding back up on hold '03 Space Blue Burgman 650, rebuilt/upgraded CVT with Polish adapter '03 Space Blue Burgman 650 parts bike, failed CVT splines/brg wwwnet Always check and adjust with engine temperature lower than 35·c {95″F) Remove cylinder head cover. May 31, 2023 · May 31, 2023 Signs that your CVT belt may need to be replaced can vary depending on the specific vehicle and its condition. Rotate cooling fan to camshaft. A deposit slip is important for both the depositor and the financial institution in which the funds are deposited. If your belt is slipping you may see a shiny part on the belt as the pulleys polish it. The Bird scooter is selling a scooter for kids called Birdie. And it seems many internet (and shade tree) mechanics assume any Subaru after 2010 has a CVT, and that the 3 They're also convinced the CVT is junk. Shared micromobility company Spin and ride-hailing company Lyft are partnering to bring Spin electric scooters to the Lyft app in 60 U markets by the end of the year Seat belts are more than just a belt and latch. Remove … The most common symptom of a bad or failing drive belt tensioner is noise from the belts or tensioner. Slipping transmission. Check the clutch faces for built-up rubber and sand it off if required. This might be due to issues with the transmission belt or pulley system. listclawer. It is no coincidence that the advent of “extreme-duty” belts appeared at about the same time high-horsepower UTVs did. Replace the belt if worn out, slipping, or every 2-3 years as preventive. Loss of performance can be a sign of a bad ATV belt. a slight shudder or hesitation could indicate belt slippage or belt wrapping (improperly climbing of the pulley system). with the engine off, the variator end has the belt down on the inside low. Dirt Wheels spends a lot of hours and miles in CVT (continuously variable transmission)-powered vehicles every year. The stiffer springs stress out the belt too much and causes them to snap prematurely. If the rear pulley will not open sufficiently the belt can heat from the pressure of the roller weights squeezing on the belt at or near top speed. The idea is to keep the engine speed constant at all times. Scooter transmission tuning and cvt explained. The belt engages quickly as usual, but then it's like the. Well overdue for a belt change! CVT belt slippage will likely happen to anyone owning an ATV sooner or later. I started to slow down to pull over and it quit. Taotao ATM150-A Evo Chinese scooter 150cc GY6.
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This video shows a CVT noise problem with chatter and belt vibration from speeds of 0-30 mph. Locating the Source of the Noise. Nov 3, 2021 · Installing your aftermarket CVT belt. This video shows a CVT noise problem with chatter and belt vibration from speeds of 0-30 mph. The drive belt (especially on a little slower rides) makes a little higher, slipping sound. Gentle acceleration to view … I was running to work today and at about 50mph the belt gave out on my cvt. Sep 6, 2008 · The cvt belt broke on my 150cc scooter (chinese brand eagle 150gsr ), so I purchased a new belt. do not use poet tool in there. An incorrect, poorly made belt will slip, and pulleys should be clean for the belt to slide up and down freely V3 / Sapero Current Max speed 72 mph. Machine is a 2010 Outlander 800R LTD with about 2500 miles with original factory belt. Damaged pulleys will not grip the belt properly and may cause the belt to slip and squeal. Installing your aftermarket CVT belt. kril tsuroth rs3 The transmission may be experiencing severe structural problems or fluid concerns if it is slipping excessively. 49ccScootA Scoot FQ Which contra spring should I use? First off, let's look at the duties a contra spring (aa. Scooter safety is important, but you have to wonder if this is the best use of resources. For my scooter here are some of the things I've done as a troubleshooting process Replace Contra Springs (from 800rpm to 1000rpm). The scooter drives for the rest perfect, but I wunder if this sound on the 650 is normal? Really tremendously loud isn't the sound, but maybe. If your belt is slipping you may see a shiny part on the belt as the pulleys polish it. By combining the appropriate materials, tension, clamping. Due to the way, CVT systems operate with two pulleys offering a countless number of gear ratios, and there is a high risk of overheating. Once I put it back together I noticed what I believe is belt slap in the CVT at idle. As a result, using a scooter drive belt size chart to identify what you're looking for makes sense. Do this for about 15 minutes. Learn about this scenic drive. Learn more about Van Allen Radiation Belts Even though you buckle and unbuckle them several times per flight, you might not have given much thought to your passenger seat belt. As a result, using a scooter drive belt size chart to identify what you're looking for makes sense. Description of all the cvt components, what they do, how they work, and how to diagnose and tune Damaged CVT pulleys can trigger squealing noises, too. There are tell-tell signs that you should change it before you are left str. Oct 11, 2020 · So questions get asked about belt sizes and how do they affect the performance of your scooter. Jan 12, 2024 · These noises can indicate belt wear or lubrication issues. Van Allen Radiation Belts are zones encircling the earth that have relatively large numbers of high-energy particles. I put it on last night - but probably neglected a step. Use both hands to pull and work the belt all the way to the center of the groove. Nov 18, 2016 · On Nov 18, 2016. Aggressive riding during the break-in period. Typically used on a variety of 4-stroke, GY6 engine scooter brands. craigslist pet adoption Atau motor jadi telat merespon," ucap Rudi Kurniawan dari Rudi Motor di. Jun 27, 2016 · Welding aluminum takes much higher heat than to weld steel because it transfers the heat so readily. The Kuiper Belt is a ring around the sun that's home to millions of comets, moons, dwarf planets and other celestial objects. Then see if it still happens afterward. something slipping in cvt The Lobby. VIP 50mm ebay bbk, 26mm polini flat slide, naraku 30mm intake -rip valve spring failure. Acceleration Hesitation: If your vehicle hesitates or feels sluggish during acceleration, it could be a sign of CVT problems. Slipping, Jerking, and Grinding. With a steel belt drive, steel pulleys, and sophisticated electronics all lubricated by special fluids, this transmission utilizes variable ratio engineering to keep the engine running at the most efficient and powerful level possible, right in the power curve sweet spot all. 5- Overheating problems. This issue can be caused by the deterioration of various CVT parts, such as the rubber belt or metal chain that links two pulleys inside a CVT Grinding noise from the transmission Continuously variable transmission. Sometimes CVT setups will rev higher on … A trace of oil or grease can contaminate your belt and cause it to slip. Lots of belt slip will lead to a glazed or worn belt and often put black streaks of belt onto the pulleys. One of the more common CVT transmission problem symptoms is a burning smell in the car. Displacement : 125cc Stock Clutch Spring : 800 RPM. Premium (aramid/Kevlar®) belts are the best belts you can buy for your scooter! Standard CVT belts are made of OEM-quality or better rubber embedded with woven cordage to provide strength 1. A deposit slip is important for both the depositor and the financial institution in which the funds are deposited. You may even see discoloration of the pulley faces. my results lifelabs And you may or may not. Even though you buc. 2- Control Module problems. VIP 50mm ebay bbk, 26mm polini flat slide, naraku 30mm intake -rip valve spring failure. Use both hands to pull and work the belt all the way to the center of the groove. Do this for about 15 minutes. The contra spring keeps tension on the belt and pressure to prevent belt slip. The idea is to keep the engine speed constant at all times. Mar 11, 2020 · Hi it,s difficult to tell what's from the sound alone,time for that new belt and a good look a your variator,a good clean always helps,3 common faults,stripping the thread,pinching the belt and wrong assy,check out the tech section good info there,invest in a variator locking tool and torque wrench. A faulty cooling system can also cause overheating. Sure, ATVs do need replacement belts, but not at the rate that UTVs do when pushed hard. Learn about this scenic drive. I upgraded from rollers to sliders Feb 1, 2024 · To ensure your scooter’s belt is at correct tension, use the following steps: Locate the belt on your scooter. Description of all the cvt components, what they do, how they work, and how to diagnose and tune Damaged CVT pulleys can trigger squealing noises, too. A continuously variable transmission ( CVT) is an automated transmission that can change through a continuous range of gear ratios. Scooter safety is important, but you have to wonder if this is the best use of resources. Aggressive riding during the break-in period. The transmission may be experiencing severe structural problems or fluid concerns if it is slipping excessively. 5K subscribers in the scooter community. … Post by Jacine onMay 29, 2007 at 10:53am. Two reasons for slippage. The cvt belt broke on my 150cc scooter (chinese brand eagle 150gsr ), so I purchased a new belt.
Perform this inspection to determine if the clutch is engaging fully and not slipping Apply the front and rear brakes as firm as possible. I'm comparing this to when I first bought the scooter. Quartz is a guide to the new global economy for people in business who are excited by change. The spring was too soft and belt was just pushing through and slipping. Atau motor jadi telat merespon," ucap Rudi Kurniawan dari Rudi Motor di. If you're new to stargazing, we'll show you how to find it. The pads looked shiny and new. The belt engages quickly as usual, but then it's like the. uniden phones troubleshooting Try replacing any worn bearings, and check how this affects your car’s performance. Nov 9, 2016 · That said, it can only maintain tension for a limited about of stretch, at some point, the belt will get too stretched to maintain sufficient tension, allowing the belt to squeal/slip. Due to the way, CVT systems operate with two pulleys offering a countless number of gear ratios, and there is a high risk of overheating. The most typical form of CVT belt damage is called hour-glassing, which happens when using a high gear when your engine is under particular stress. If I adjust my idle screw I can get the slap to go away but that makes the idle feel too high when riding. For my scooter here are some of the things I've done as a troubleshooting process Replace Contra Springs (from 800rpm to 1000rpm). Basic Maintenance of your CVT. qbcore premade server Slipping transmission. Replace the belt if worn out, slipping, or every 2-3 years as preventive. torque spring, main spring) has. with the engine off, the variator end has the belt down on the inside low. The best way to prevent the dreaded CVT belt squeal is to regularly check the tension of the belt and keep. *Might even be the bearing from the cvt cover spinning in the case, which will be evident if you start the engine with the cover off. Step 4. On the clutch end, the belt is all the way out to the outer edge of the pulley. brahmin purse Dont take this the wrong way , but 8g rollers & 340lbs are pretty taxing on a 139qmb 5-6g rollers/sliders & about 1500rpm clutch springs. This contrasts with other transmissions that provide a limited number of gear ratios in fixed steps. Lucky nothing caught on fire the metal cvt case is burned black around the variator. Check the clutch faces for built-up rubber and sand it off if required. torque spring, main spring) has.
We provide resources such as exercises for seniors, where to get mobility ai. Lots of belt slip will lead to a glazed or worn belt and often put black streaks of belt onto the pulleys. Aggressive riding during the break-in period. Rotate cooling fan to camshaft. May 22, 2023 · Lubrication: It’s important to note that CVT belts operate in an environment with lubrication, such as CVT fluid. The cvt belt broke on my 150cc scooter (chinese brand eagle 150gsr ), so I purchased a new belt. It is not the belt and clutch making the heat, it is the engine and the holes should help. Dott has raised a new $85 million Series B funding round — this round is a mix of equity and asset-backed debt financing. Welding aluminum takes much higher heat than to weld steel because it transfers the heat so readily. Aggressive riding during the break-in period. But with the stock 5. It may vary from manufacturer to manufacturer, but for example, for Yamaha vehicles, the V-belt on a 50cc to 250cc scooter is specified to be replaced every 20,000km. Winter is the perfect time to look for Orion's Belt in the Northern Hemisphere. Consult your scooter’s manual for the recommended tension. Well overdue for a belt change! CVT belt slippage will likely happen to anyone owning an ATV sooner or later. If I adjust my idle screw I can get the slap to go away but that makes the idle feel too high when riding. You may even see discoloration of the pulley faces. Locate mark at center top, aligning magneto fly wheel mark with that on crankcase. Check to make sure there isn't something digging into the belt, or that the clutch or variator faces have a burr on them. This video shows a CVT noise problem with chatter and belt vibration from speeds of 0-30 mph. decoding words worksheets pdf One of these pulleys is connected to the engine, while the other is connected to the scooter’s driven wheel. How to make a belt from an Altoids tin is explained in this article from HowStuffWorks. "Slip ini kan bisa bikin tidak nyaman, seperti kalau kita mau bejek gas terasa telat. You may not see any of that though. Oct 2, 2020 · It may vary from manufacturer to manufacturer, but for example, for Yamaha vehicles, the V-belt on a 50cc to 250cc scooter is specified to be replaced every 20,000km. I upgraded from rollers to sliders To ensure your scooter’s belt is at correct tension, use the following steps: Locate the belt on your scooter. The contra spring keeps tension on the belt and pressure to prevent belt slip. You can then measure the height of the spring and compare it to the manufacturer’s specification. slipping or a stretched belt would give reduced MPG and a lower top speed. 2611 posts · Joined 2008 There is a petcock at the bottom of the cvt cover, unscrew it and see if water comes out Pull the cvt cover and remove the sheave, take the sheave apart and clean it and put it all back together and you will be good to go Jan 7, 2021 · Maintaining Your Scooter Transmission Checking transmission fluid. On the clutch end, the belt is all the way out to the outer edge of the pulley. Learn about this scenic drive. fox 13 news utah live CVS Stock Slips After Earnings -- But Is This a Bad Thing?. 09900-26006: Tachometer. Hour-glassing of a CVT belt can come about because of high-gear. Overheating. Once I put it back together I noticed what I believe is belt slap in the CVT at idle. Look for blueing of the bell. There was minor rubber marks so I think super light rollers was the culprit. So questions get asked about belt sizes and how do they affect the performance of your scooter. As CVT-powered ATVs and UTVs have proliferated, knowledge of the system has grown exponentially as well. I'd not be spraying anything on one other than compressed air. So for this reason we are going to cover the most important aspect of them and that is the gearing of these scooters which is a CVT or Continuously Variable Transmission. ⚠ WARNING California Residents: Proposition 65 Warning. Scooter safety is important, but you have to wonder if this is the best use of resources. take the belt and wrap it around the clutch (rear) and lay over the seat. Scooter safety is important, but you have to wonder if this is the best use of resources. Scooter transmission tuning and cvt explained. Jul 31, 2015 · Replace everything , 5-6 g rollers/sliders will help takeoff. We provide resources such as exercises for seniors, where to get mobility ai. ScootDawg Forums > Performance :: Maintenance :: Technical > 125cc - 249cc: Drive belt slipping, maybe catching 729-17. If the tensioner is loose the belts may squeak or squeal, … Being an issue largely on takeoff, it makes me suspect clutch springs, but it could be rollers too light or the contra too stiff. My belt had snapped on me twice on 2 different scooters.