Picking up this sane model tomorrow and am glad I checked out your video... definition doing both these easy upgrades

Probably one of the best detailed video on you tube. Many Thanks.

Best video i've seen in a while. Straight to the point. Nice tutorial. You gor yourself a new subscriber😁

Excellent teaching, description and helpful tips 🙂👍

Very good presentation skills. I learned a lot. Thanks for taking the time to create this video.

Excellent very comprehensive and can be applied to other scooters Thanks

Brilliant vlog, Thank you very much.

Thanks! Just inherited a 2002 and got it running. Hard to believe they put a restrictor in place that is so easy to remove. Already knew most of this except the clutch workings so that was very helpful. Runs fast in mid rpm but takeoff is weak. Thanks Brent

So clear and well explained, thank you!

Nice Video. Greetings from Scooter Community Germany 👍🏻

Mint, no bull. Just straight forward, good information. Thanks.

Great job! Well presented.

Great instructional video. I did this mod years ago without the benefit of this excellent video. Clear and to the point. I also removed the restrictor from the pipe that made a huge difference! I've got a 45 mph little monster. Question: Do you have recommend any mods for airbox/filter and or different (hotter) plug as a result of these two mods? Seems like with both mods I may need to adjust airflow and/or jetting. Thanks for the great video!!

Fantastic thanks man. Watched a ton of these but yours is the only one that works 🙂 I've a Yamaha BWS 100 and I'm fixing it tomorrow on your good advice!

Thanks, very nice and descriptive video. Love, Edward

This is such a good video. So much great information provided. Thank you!

Very, very comprehensive, Thank you so much!

Love your videos

Thanks for the video, really interesting

Great Video, Thank You.

Thanks- good video!

Awesome! Thank you! 🫵🏼👊🏼👍🏼

THANK YOU

Amazing Video. You do an excellent job of giving the perfect amount of detail and background information to help a novice complete the job. One question. What is the name of the tool that you use to hold the variator in place at 7:05 into the video? Thank you for all your help!

@49ccScoot thanks for actually reply to comments unlike other KZfaqrs. I also have a Derbi runner 50 and its just like the aprilia sr50. I ran into one day that it is slow at start when getting up to speed and the rpm dropped from 7000 to 6000. I changed the belt and removed the 6g rollers and put in 5g. Since the exhaust is the original i checked it for restrictors and used a blow torch on it until i had smoke and flames coming out from the exhaust on idle. So i burned the catalysator clean i think but there is a air inlet on the exhaust that.draws air from the airbox and in to the exhaust. Also there is two blocked tubes running out from it also. I tried burning everything. Can i cut of the blocked pipes and the.air.inlet to the exhaust, and also cut open the last shiny part that i think is the catalysator and weld it back togheter? Maybe that will give it more performance? Anyway after burning the exhaust and 5g rollers i made it back to steadily 7500 rpm all the time even uphill and on the flats BUT its not as fast uphill as it was before. This is my fiances bike and you know i always gets complaints about the lack of performance. And of course i need to fix this with the things i have and not spend any money. The scooter is lacking will to start in a uphill and it feels like it slips or like it won't grip and get going. My own scooter is a a different league and its like im on a motorcycle compared to the derbi. I am to open it up again, check reeds, check airbox, maybe rejet from i think 85 back to 75.main.jet and of course look at cvt and see if the belt is to wide in the front or to low in the back. Tried be very spesific.. Can you maybe give me some ideas? I know two stroke so using a wrench is easy for me. Also it has downhill when releasing the throttle and after few seconds give it wot again hesitate for a loooong time before kicking back..thats why i was thinking reeds. You have any ideas about that also? I was thinking about fitting a red torque spring i have laying here but im not sure what it does..thats why I have been spending 5 hours now looking on utube about springs. Still not sure. The clutch engages about at 5000rpm.and it has red clutch springs. Also wanted to mention that. No restritor on variator of course. Thank you!! Ps just subbed as well. :) U wanna see freedive visit me

Nice tutorial !!!

Very helpful ❤

Excellent tutorial. Thank you.

great job

Thank You!

People, doing this, you will lose acceleration in "first gear" but gain top speed (provided that the spacer lets your belt sit closer to the shaft). It can be quite dramatic, like 10 km/h. Go ahead and experiment and see what you prefer. BUT, before you experiment or do anything, READ THIS and do not throw this spacer away! I'm only talking about the small spacers here. The big one is an obvious restriction and should be removed without issue. When reassembling, the conical washer that is used with the nut (also make sure to install conical washer the right way), should NOT touch the splines of the shaft. The conical washer should sit against the "whatever you call it other part". If that conical washer even slightly touches the splines, it will eat the splines away when you torque it, especially with an impact gun (which most people use). Have fun disassembling and repairing your splines and other damaged parts after that (if at all possible). This is applicable to Yamaha BWS of all years and probably most other brands of scooter. When checking if the spacer is required in the assembly (and given the tight tolerance of the assembly, I'm sure it's required 95% of times), make sure to give your belt some slack so that you see the real final assembly position, or even better check without a belt. If you can see the splines, or if it looks like that washer might touch the splines, or if in doubt, you need to put that spacer back, or another spacer of the appropriate thickness to protect the splines. The spacer should be over the splines if you go for this mod. You can put the spacer either completely at the back or at the front. Now you may think, but I've already done this and removed the spacer completely and everything is fine. Think again! This is a conical washer. It will sit slightly differently against the splines everytime you torque it. The first 15 times might be fine, but the 16th time it might completely destroy your splines away. You will potentially be screwed and very sad. Removing the spacer will also slightly affect the kick start mechanism. It automatically becomes "looser" if you completely remove the spacer (the mechanism has to go farther to engage). I'm not aware if this can lead to issues, but it's definitely not impossible. To recap: If you can see the splines when you're about to put the conical washer, you have a problem! You need a spacer. Put it completely at the back or at the front so that the splines are protected from that conical washer. Edit: after careful analysis, I believe it's better to put the spacer completely at the back of the variator (if you do the mod). This keeps the belt in a more natural enlignment to facilitate reaching the highest speed possible. If you completely remove the spacer or put it in front, the belt is angled in a way that doesn't help pushing the torque drive to it's "highest gear" position. P.S. If looking for top speed, have a look at your contra spring. Ensure that it is completely seated and free to rotate in it's location in your clutch. If it isn't completely seated even by 1 mm, it could affect your top speed quite a bit. Grind it (both the face or outside diameter, as required) until it's completely seated. Also look at the compressed length of your contra spring versus your torque drive. In the absolute "highest gear" position, my clutch leaves exactly 3cm for a compressed contra spring. The blue and red contra springs I have here, when I compressed them, are both exactly 3cm. This means that the torque drive has to COMPLETELY crush the spring for you to reach top speed. For the blue one, that means 65 pounds of pressure (measured on a body scale). For the red one, that's approx 100 pounds. That's a whole lot of force required on your spring for you to reach absolute top speed. Hence why you shouldn't use the stiffest contra springs unless you absolutely have to. You're most welcome. Remember to share your knowledge! Further reading: www.pedparts.co.uk/blog/variator-fitting-crankshaft-pulley-spline-damage benelliquattronove.wordpress.com/2018/06/05/scooter-cvt-variator-tuning-tip/

great video mate. thanks for posting and you are a wealth of knowledge. i have a vino 125, would this be the same kinda process?

holy sh... poop :))) this actualy explains alot clearly ! its so simple .. no more scooter mecanics with alot of $$ dumped ... u can do it at home , its simple !

What’s up !this happens to be my scooter motor but rear drum lol

Loved the video 👍👍 so detailed. What else can I do to upgrade my 50cc engine?

fascinating...

Hey there, first and foremost your my #1 scooter parts expert when it comes to 50cc's. Keep up the good work buddy. I have a gy6 50cc that I'm reassembling from scratch due to blowing the engine compartment due to lack of oil, thats my luck I guess. I'm keeping all working parts and swapping the bad parts. I've gotten lucky as not to replace too many parts but, I did manage to damage a main component. I believe it's the gearbox breather, a white plastic valve that sits 2 bolts from the left of the gearbox drain bolt. So my questions are, what is the correct name of the part and, where can I find it if possible? Thanks a lot

Nice detailed straight to the point . I have a 01 vertical minarelli will my trans be the same as this?

Finally working on that Tao Tao engine swap 👍

Very informative video. Is this a similar set up to a 2013 Honda Metropolitan?

Good video!

great video like the details I have a 2021 super 50cc scooter that will not go over 22mph and it doesn't have a restrictor washer on it just check a hr ago . so is it the rollers? cuz I'm at a loss

Awesome

i actually got one of these little scooters for like 10 bucks once, it was missing all the plastic ferrings and alot of the wiring was ruined including it had no spark. i looked up a service manual on line and found the blue and green wire need hooked to like the ground and the red wire and the brown wire are the kill switch and they need connected for it to run. once i fixed the spark i cut the muffler off hoping it would run better. turns out the carb is so small it needs that much back pressure to even run well at all. i got a much less restrictive muffler and took a torch tip cleaner and filed the jet out a little bigger and it runs solid now. does a solid 25 miles an hour. removing the restrictor will probably make it go 30 top speed. the motor revs up pretty solid so i think if it had more gear it would go faster. it revs only so high and then it starts four stroking

You're a natural teacher! Fantastic video!! Subscribed. Is it possible the conical washer went in backwards?

This looks so similar to a 2005 Zuma, I have the parts to replace the transmission with an NCY Kit. You sold me on getting an impact now. To Harbor Freight I go.

Hello, have you tried to remove a baffle in the exhaust header? if there is one of course. Thanks

Hi I have a tgb 202 classic would this work on that, great video well explained and clear 👍

Thanx again for the info..I had big bikes my whole life but was in a bad wreck a few years back..now I'm back on a bike but started with a scooter ..looks Luke a grom and it's fun as hell but I'd like to have enough speed to get to doctor appointments without bothering g trafic..limit is 40mph so I jst need 10 mph.. great for me tho I've missed riding so damn much

Hey do you know were you can get a replacement crankcase gasket

Hey mate is this the same for the 1991 Yamaha jog (cg50)?

Man you could not have presented this any more clearly!, I don't have all the tools, so I think I will just expand the hole from exhaust to manifold, and try that first, even though my instinct for measure was to do this first. Thank you for preventing me damage or mistake to this, and I hope to do this as well. 10/10

Wondering if you can help, I've got my 50 cc 2005 Vino running after sitting for 5 years, but will not throttle up to the max, even after carb is extremely clean, new plug, air filter etc. any ideas what it could be? TIA

Hello I have a yamaha cr90 target from the factory has 788 15,5 28 belt I have the same problem the belt sitting low on back plates, how we can do the belt to sit in upper position in back plates? Longer belt?

I know this is an old video but, can this work on a 2019 metropolitan? It currently hits 37 - 38 mph. What else can help it go fast? My kid weigh like 65lbs and I 205lbs still same top speed.

Will this work for gilera runner 50cc 2-stroke 2017 model?

Hey do you know the size of the vino/jog cvt cover bearing?

I'm trying to restore a scooter(yamaha jog aprio 1996 model) with the same exact engine here in Japan, genuine parts are quite expensive, used or unused.

This was extremely detailed and educational. Do you have one for removing the airbag and carb on the Vino 50? Mine won't start this year. Also, does the restrictor information apply to the Zuma 50 as well? Thank you. Liked and subscribed.

The small shim is needed to correct for belt thickness. Thicker shims are needed to compensate for thicker belts

Wee, new vid :D Is this a short block minarelli ?

Awesome video dude I’ve subscribed to your channel but no notifications are showing?? I taped the bell icon not sure if it’s just KZfaqs fault?

hey my friend do you think my tao tao has that same restriction on it too

I just took my clutches apart yesterday and notice that the small washer was behind the primary clutch, engine side. I just bout this from someone with 4k miles, and I can tell someone already did the mod, but left that shim behind the clutch?? What does that do? I took it out completely, put in a new belt, cleaned the clutches, and didn't notice any boost taking that shim out. Feels like I lost low end torque if anything. As for the big washer, it was not in there.

does 2003 Honda Metropolitan have restrictor? I google but no luck.

5:22 so do I just order a belt size up? Mine runs something like 18 30 69 (obviously in the wrong order but you get what I'm saying) I also put an aftermarket air filter and staggered 5 6 and 7 gram rollers in the front varietal hitting 40 pretty quickly. I know a decent amount about mopeds since I've worked with them and on mine a lot but there's always more to learn. That's the way I like to think anyway. Someone please let me know! Thank you!

Does a 2 stroke vino ( same engine as in video) have a restricted cdi? If so where can I get a derestriced one?

Why was there not a new gasket placed on the cvt cover? Thank you for such an informative video

What’s the name of the gold thing that holds the thing in place

Is this the same on the 4 stroke?

First, thank you! Second, do you have a video on how to reassemble the kickstarter? Getting the spring back in place is really kicking my trash!

But I'll ask anyway. If the back wheels not turning then this could very well be the problem? And it makes sense.

Hey, is there a chance of the belt slipping out because of this? Nice video.

I own a kymco like 50 4t will this work?

Does this apply to the zuma 50 t?

What do you run for 2T oil?

Is this the same for the 03 zuma?

Are u ridung again after the deer incident ?

Will this work for a yamaha jog rr

How much did the motor cost? I bought a crf50 motor off eBay years ago and it was junk. $400 down the drain

do you have a shop open to the public? I'm getting tired of working on scooters. I've noticed you're local to me as you seem to be in Md.

I just got a 2006 Yamaha vino 50cc 4t does it also have a restrictor? I can only go 35 tops if that. If anyone could help I’d appreciate it.

Can i put a 70 cc kit in my scooter, its 4 T.

How much ft lbs does that torque stick have?

I own a 2006 Yamaha Vino 50. Experiencing trouble. From cold start motor runs 45 mph easily. Once the motor warms drops down to about 15 and does not get better miss badly. I am thinking stator or coil. Recommendations?

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How much speed would you gain?

Gained almost 10 mph..about 38 now..with small shim still installed..you think I should remove that one as well..?

I had weird thing happen. I lost all my sub channels. Could i ask your advise on some things ? Yes i know the forums are full of what i seek. But i think you are the person i can ask. Simple stuff, just a confirmation of what i have come up with - for ideas ? A bounce off so to speak. Ok with that - pick your brain a bit.

Woud this mod work on a 2006 yamaha bws 50 2t ?

Use an impact driver with a Phillips head on it number 3

How old do you need to be in america for riding a scooter. And does the scooter need to be restricted to be legal?

Can a scooter cvt lock up the back wheel if something goes wrong like a bearing/ clutch goes or something comes loose or it will it just free wheel normally ?

Hello, i love your videos and win 1 more sub, i´m Johne form Portugal, i have one yamaha neos 50cc engine stock and she dont pass of 70km/h, what can i do without install a 70cc kit to make it run a little more fast? Thanks

Ive seen that if you do this it wears down the belt quciker

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God good good

The china 50cc scooters have these? To restrict

Has anyone ever had a starter gear that will not come off the spline/crank shaft? Mine is really stuck on and will not let go on a Yamaha Zuma 2002 50cc

This is maybe the only, and certainly the easiest, "derestriction" that you can make to the later Vino years, with the 4-stroke engines. On the 4 stroke you should get 4mph improvement without a noticeable detriment to acceleration, as long as you weigh under 180 or so. The heavier you are, the more the speed will be at the expense of acceleration. Truly, I think 50cc is a machine for riders under 160 lbs. . Can any owner of 4-stroke Vino 50s confirm my experience ?