How To Replace The Stator On Chinese Pit Bike, Moped, & ATV Four-Stroke 49cc 110cc 125cc 150cc 160cc

[@Josemanc]

Hey Brent videos 2 days in a row. Cool. I love your content

[@robertpierce1981]

Two videos in one week. One of those is definitely easier to change than the other. I’ll guess which one is more common.

[@JAMTOAM]

i need to know if i need a battery or stator if i boost the battery it start stay on then i can turn it on after that but after awhile dies then when i hit start button it make a hight pitch noise is it the stator or the cdi

[@SlimParzival]

I have a 2010 Gio beast. 200cc. When replacing the stator (thanks for the help) I noticed there was oil in this area. Is this normal for these types of engines?

[@49ccscoot]

You shouldn't have oil where the stator is. It could be something like a bad seal though.

[@SlimParzival]

@@49ccscoot thanks. I’ll look into the seals. Thank you very much!

[@NickShootsStuff]

I have a SSR 125 Auto, it needed a jump start before to get it going. So I got a new battery and still doesn't start. Is the stator a likely culprit? thanks!

[@49ccscoot]

Check for spark first. If you have no spark, then stator, coil, CDI are likely suspects.

[@NickShootsStuff]

@@49ccscoot thanks dude!

[@NickShootsStuff]

@@49ccscoot semi-related question, how hard is it to swap engines on these SSR bikes? Is it just unplug battery, then all connections, chain, then 3 bolts?

[@alan8049]

Hey great video!! You seem knowledgeable of these small engines. I'm having trouble getting spark on a 125 semi auto. Just wondering if you know what values a stator should read.

[@49ccscoot]

You'd have to check a service manual for resistance values. I usually do cranking tests with the harness disconnected as shown in this link. The vid is a 139QMB, but I'm doing it the same for the pit bikes. kzbin.info/www/bejne/p2qQnqVtd718ntE

[@alan8049]

@@49ccscoot thank you very much!! Exactly what I was looking for! Much appreciated

[@cajunman7389]

Is it possible to run a wire from the stator to a rectifier then to a small light bar to add a headlight to a syx moto 50cc pull start dirt bike? If not would happen to know what aftermarket stator i would need to make that set up work? Thanks

[@49ccscoot]

I don't know that bike, but just googling a pic looks like it's a small two-stroke. Some of those just have a magneto to make spark and nothing for charging. They're often more of the offroad market, where lights and accessories are not required and there is no provision for them. It may be easier to get a good battery to power a light and just recharge it after use. A friend of mine uses SLA batteries like power supplies use and has no charging on a street scooter. He can ride for hours before swapping out a battery when running low watt LEDs and a water pump.

[@Therealslimstig]

I'm having serious trouble finind out what engine I have. None seem to match. Is there a way to identify it? It's a Chinese one on a buggy. Seems pretty old. Flywheel doesn't have a pickup raised bit on it.

[@49ccscoot]

Check the engine for numbers and try googling those. Usually there's a tab on the left side or it may be engraved on the lower part of the engine.

[@Therealslimstig]

@@49ccscoot I can't see any on there. Maybe time to take it off the frame.

[@Random.Adventures.]

I'm guessing stators are not interchangeable example if i have a 2 pole and i get a wiring kit with a 6pole stator

[@49ccscoot]

You can't just swap the stator. You would have to make sure the wiring was the same and swap the regulator/rectifier at least.

[@Random.Adventures.]

@@49ccscoot ok thanks

[@s.f.morris7331]

what if the bolt to remove the magneto is beyond stripped and you can't get to the stator? the bolt on mine is shredded and I can not get the magnet off dont know what to do. even if I get it off the threads on the stem will never allow me to put a new bolt on. am I screwed?

[@49ccscoot]

So you have the flywheel that covers the stator. Are you saying the threads where a puller goes are stripped so you can't pull the flywheel or the nut is stripped and you can't get a socket to hold to take it off and the threads on the crank are bad too?

[@s.f.morris7331]

@@49ccscoot I got the black plastic cover off fine then the 4 screws to take the white plastic fan off fine. the next step is that bolt you need to take off with impact wrench is stripped so bad the impact couldn't even get it off. I tried lubricant, I tried to chisel it off, I bought a bolt removal kit that couldn't do it either. and in all this I think its so shredded that its not even a bolt/nut anymore and the threaded crank stem threads arent looking to good now that even if I managed to get that bolt off in pieces I dont think another bolt/nut will be able to go on it now. so I cant even get that magneto off to get to the stator to change that out. was that a better description? I have another engine from another scooter I was just gonna use but this one that I screwed up was the newer one of the two which is what sucks. thoughts? or ideas? if you understood what I wrote.

[@49ccscoot]

@@s.f.morris7331 I gotcha. That's a tough one. Try heat, if you haven't already. Sounds like you'd probably need to try heat and another method to grab the bolt now. Look up heating a nut to remove or something like that on KZbin. If the threads are damaged, you may be able to rethread to a smaller size and use a new matching nut. I have ground the diameter enough to work with a different thread size/pitch before on scoot cranks. Don't worry about metric or standard in that case, just find whatever is a good fit. Don't take it down too small either, because you want it to be able to handle the force on the flywheel nut. If all else fails, you can probably get a small 1/8" or so carbide burr in there to cut through the nut. Prob won't be a fast process, but could possibly be done carefully and not damage the flywheel or crank.

[@Gdad-20]

Such clear and simple description. Loved it and have subbed. Take care buddy.

[@datguyzofficial6233]

You did everything but show us how to undo the flywheel without the impact drill because I'm having trouble and feel I am doing something wrong I really wish you would have added that in because I feel you covered everything else sooooo well now I have to stop everything as I don't know how take that bolt off by it's self 😞

[@bikersoncall]

I have a 140cc YX engine, flywheel is off the bike, it's about an 11hp motor, do you have a ballpark torque spec for that Flywheel retaining nut? Then jut is 14mm.

[@49ccscoot]

Most are around 40Nm / 30ft-lb.

[@bikersoncall]

@@49ccscoot Thanks much!

[@bikersoncall]

@@49ccscoot ..by the way, I finally heard back from the US dealer, he said 30 lbs. The two plate-bolts on mine are phillips acckkk!!, I went ahead and bought the manual impact to be sure I didn't create a much bigger project, it worked like a charm.

[@ALMIGHTYGARAGE]

Hey didnt you have a link to this wiring kit ? I've watched alot of videos but mine the stator didn't come with any connections just the wires on the end? What do I do

[@49ccscoot]

I usually use sites like Corsa-Technic if I need connectors. They carry a lot of stuff. You may just have to browse to find a match. You could swap out the connector(s) on the bike and use whatever style of connector you like.

[@ShahrozSher-p1l]

Hey! I’m learning about pit bike engines and have a 8yr old that i’ve replaced everything from carb, clutch lever, throttle lever and cable etc but after finally adjusting the clutch. When i kick down it’ s not smooth and feels like one stiff pressurized motion, I’m thinking its the crankshaft but could it be the stator?

[@49ccscoot]

Unless there's contact, it shouldn't be the stator. Maybe a cylinder/piston issue.

[@ShahrozSher-p1l]

@@49ccscoot Thank you!

[@allkindsvideos837]

Thank u brother for being awesome for doing this for me now i know how to change it

[@ColinBoath]

Will it make any difference if the stator is 180 degrees out, and I got a replacement, and will fit either way. Still no spark tho

[@49ccscoot]

It may or may not. If the pickup is not attached to the stator in an assembly, then how you move the stator relative to the pickup may have some effect. I've never had trouble with it just doing replacements or moving pickups to change timing a little, but a friend doing something custom found that when they move too much in relation to each other it can cause some sort of phase issues. Try to replicate however the original was and otherwise you'll need to look at other components. You can check for power coming from the exciter coil and pickup coil to make sure each is at least putting out power/signal.

[@charliegarcia3267]

Best channel of all KZbin.

[@voithy8351]

hey what is that chain called mine is snapped and im having a hard time finding it

[@49ccscoot]

The chain that you can see behind the stator plate is the cam chain or may be called timing chain.

[@voithy8351]

@@49ccscoot oh okay so I definitely need to replace it. I did some more research and just thought it was for the electric start only. Thanks for the help

[@Polypheides]

thank you for being awesome !

[@d.devries4807]

is it possible to get your engine running high due to an air leak at the stator? when i start my pitbike with the choke it looks like its running good. but at the moment i turn of the choke it starts climbing in rpms.. so at first i thougt it should be an air leak at the intake or head gasket. after replacing them and cheking for leaks with brake cleaner. nothing happend, so these should be good. now when i spay brake clean thru the flywheel the engine dies. now i dont know wheter this is coming from an air leak, or just because im wetting the stator. hope somebody can help!! thanks

[@49ccscoot]

If it's a four-stroke like the one's shown in this vid, that shouldn't be from a change in mixture. In a two-stroke, the air/fuel mixture goes through the crankcase so a bad seal can do that. In a four-stroke, you're just sealing in oil and crankcase pressure so spraying something on it should not affect it that way. If anything that could possibly suck in some of that spray is close enough, maybe that's why?

[@d.devries4807]

@@49ccscoot thanks for your fast response ! I thought it was like that with four stroke but nice to be sure ! However if i spray on the flywheel i definitely notice a change in the engine. Could this be because its sprayed on the spools ? Or is the chance bigger that some of the damps are flowing to the air filter on the carb

[@49ccscoot]

@@d.devries4807 I wouldn't think it would increase RPM because the stator had parts cleaner on it. Not unless it was lubricating something, and contact there would be bad.

[@d.devries4807]

@@49ccscoot Thanks ! I found the problem, at first there was no insulator why it was running high. After that still but no more false air, so i put a bigger jet and changed the needle up. Runs 👌

[@dementinum]

Wherr do you get this exact stator?

[@49ccscoot]

Both stators shown in this video are originals from the engine, but try TBoltUSA. They have multiple stators so you should be able to match up what you need and they carry Piranha motors (where I got mine).

[@wandajames6234]

Best video I've seen. But I (and others) could not get those 2 m6 bolts out of the pick up mounting. Tried impact drill, hand impact tool, chisel and soaking for days, not moving. Wish videos would cover worst case scenarios instead of when things are easy-peasy. Screw extractor won't work if they are so tight, drilling them out with left hand drill bit? Will the holes be destroyed cause it is aluminum? Bloody hell what a pain.

[@49ccscoot]

If you can drill them on center, you can drill them out. That's really the tough part of drilling out bolts in anything though. You can try heat.

[@jamest.5001]

What's your opinion on adding A oilcooler to gy6 engines? I ordered the parts, figured I'd install with me next oil change! I have noticed my engine runs a bit hotter than I'd like, after the big bore kit was installed, I'd much rather have a oil cooler than not, I noticed the head doesn't have much cooling find, I did buy new covers, and thinking about getting a aftermarket fan, although I do have a new stock fan, great video;!!

[@49ccscoot]

DO IT! That's my opinion. lol I added one to my GY6 155 and it made a significant difference in oil temp and CHT. My setup and before and after results are all here : 49ccscoot.proboards.com/thread/16180/139qmb-cooler-information-installation-help

[@bikersoncall]

My stator plate is stuck after removing the two bolts, it will spin side to side with a hammer about 1/4'' but doesn't seem to want to be removed.

[@49ccscoot]

You could see if it can be pried out, but you would have to be gentle and use caution. The plate or case could be damaged pretty easily.

[@bikersoncall]

@@49ccscoot Thanks, I did get it out, kinda' pried here and there, someone said don't worry about it if you're replacing it, lol. I'd rather figure out what went wrong with it and fix it for a spare if salvageable. THanks man..

[@bikersoncall]

@@49ccscoot Aside from 6 wire harness, mine is 5 wire, but I know what I need out of it to just run, a second harnesss looks to be 1 wire to some kind of round thing with a 1/4 square copper plate, I assume some type of sensor, rpm maybe .. :Shrugs:

[@michaelwright9891]

Upgrading the stator on my gy6 150cc engine, what is really the best benefits to be expected; in your opinion? I am wanting more spark. Thank You for your helpful videos. BIG FAN!

[@49ccscoot]

Most stator upgrades aren't going to give you more spark. Usually it's about charging/lighting.

[@Acelife135]

Should oil be in there?

[@49ccscoot]

Behind the stator plate. You can usually tilt the engine so oil would run to the other side and get away with it.

[@KarlOuellet]

Bonjour j'ai un tornado utility 250cc injection 2015.J'aimerai savoir si vous aviez déjà entendu parler d'un problème qui suit. La machine part très bien . elle roule numéro un pour 20-25 minute puis elle s'éteint. J'attend 1 ou 2 minute et elle repart très bien pour un autre 20-25 minute. Elle a 865 kilo alors comme neuve. Ne prend pas d'huile , ne chauffe pas et tout les filtre changer .On parle sur les forum de la bougie quand elle vient chaude elle coupe l'étincelle ou du tuyau et bouchon a gaz pour que le réservoir prenne son air. Tout ca a été vérifier et cest ok . l'injecteur fonctionne bien car il va tres bien avant qu'il n'arrête . il me reste a vérifier si il y a du feu aussitôt qu'il éteint a chaude. J'attend votre avis svp . Merci

[@49ccscoot]

Definitely check spark in case there's a heat related ignition issue. Also check valve adjustment.

[@progaragechinskiemotorki]

Boty masz na kanale musisz je zgłaszać bo ci konto ukradną z instagram później e-mail i KZbin. Rok temu to przerabialem 😣

[@49ccscoot]

I've been reporting them as spam. Doesn't seem to change anything.

[@paulbudford]

Another great tutorial. 👍

[@singingshelf834]

hank hill?

[@49ccscoot]

I may or may not sell propane and propane accessories.

[@mdsoto3893]

Thanks you bud great 😊 video

[@MrSandRune]

I forgot.Wrong regulator burns everything on black\white wire.Wrong stator burned everything on yellow wire.

[@BugsWisely]

Great tips.

[@linusyliaho2672]

Where's the tpr?

[@49ccscoot]

I just ordered a piston from Europe today. It has been on backorder since January and I really wanted to go with ScooterTuning, but they've had no luck sourcing it and I guess TPR is out of stock of stuff so I went with a place that had it rather than sitting around with an unknown timeline.

[@jacklarson6281]

it never fails.., all the screws and bolts come out easily except for that one that is frozen... 😱

[@superspecialty5169]

My apology for insinuating “that you may not own a torque wrench, either” as my comment in your first video because in this video you mrntioned “use a torque wrench, if you have a torque spec” as we’re dealing with a Chinese scooter, not a nuclear submarine! 😞🥺

[@49ccscoot]

There are some spots where torque values are rare. I prefer bikes that tell you a torque spec for the steering stem, like in the video that you commented on, but they don't exist for that scooter.