Highly Detailed GY6 Valve Adjustment Procedure(Step By Step)

[@survivalmacguyver]

Just a tip for everyone else. It is definitely easier to hold the center with needle nose pliers and lock the nut with a open end wrench, especially if you've never done this before. Great video!

[@qu4980]

True. I use a .004 as a shim while socket tightening. When I yank out the 4 only 3 will fit. Good stuff

[@elobiretv]

Just buy the special took they make for doing this, I think you can get them quite cheap now.

[@edwardjames6070]

@@elobiretv I'm as cheap as anybody, and that tool is a MUST. search 'Valve Adjusting Tool For Scooters' it's a two-piece tool with one piece having 3mm, 3.5mm, and 4mm and the other piece having 9mm and 10mm sockets. great tool. way less than ten bucks.

[@p2g1949]

absolutely the best vids on GY6 150cc scooters around. your explanations & actual camera work are at the top. keep up your great work.

[@electronicsNmore]

Thank You! I try to be very clear/concise. Please share my channel with others, and rate Thumbs Up.

[@francescosisto7131]

Thank you for the video, my scooter seemd not having power anymore, despite new belt and Variator it was the valves, i adjusted the spacing and now the scooter seems like a jet! (Had a little problem with the gasket of the valve cover, so it was leaking a little oil, but rearranged the gasket, repositioned the cover, and now is perfect!)

[@electronicsNmore]

Glad it helped Francesco!

[@John-zt3lv]

Man, if anyone can't follow those instructions, they need to throw their tools away and admit to themselves, I am so dumb, I need to get into acting. This tutorial is perfect! Makes me want to subscribe, which I have, of course. I will learn from this guy.

[@electronicsNmore]

Thanks John!

[@kennethknight7195]

thank you for your scooter valve adjustment tutorial, I know nothing about engines and I adjusted them with no problems whatsoever many thanks

[@chrisbeck5577]

top mount Scooter engine

[@timbozarth144]

hi, you are the man, thanks for making all the scooter videos you have taken time to make, i got a renke gy6 150cc scooter a few months ago and have never been "mechanically inclined" but after a few issues arose and i had no money for a mechanic, i have been referencing your videos and it has helped me save a lot of time and money. Thank you so much i'll keep watching.

[@electronicsNmore]

+Tim Bozarth Glad to hear you like my videos! Please be sure to share with others and rate thumbs up. Thanks.

[@sweetleef7044]

Thank you so much for this video! Scooter was running very poorly last Friday and Saturday it wouldn't start at all. Couldn't get to it until yesterday and it started right up, drove like shit. Talked to a guy at my local scooter shop and he suggested I adjust the valves. I watched the video and made it happen. Scoot is running like a champ at.005-.005! Thanks electronicsNmore!

[@electronicsNmore]

Good to hear! Please share my channel/videos with others, and rate Thumbs Up. Thank You!

[@gregoabbott5644]

0.005 WHAT ??? inches ,mm , yards, km

[@brennenervin8321]

I

[@Michael-kd2ny]

Hey everyone, I have a 150cc Velocity scooter, and it slowly started to get harder and harder to crank. I would run the battery down turning it over until it would finally fire at the almost end of the battery life. I changed out everything that I could, since the symptoms of valve problems is basically no fire. This took my about 45 minutes, I used the sealant that he said, and BAM, my bike fires as soon as I hit the starter. This is not a hard job to do, and I hope you all get the help that I did from this man. Thank you for the video.

[@electronicsNmore]

+Michael Currin Hi Michael. You're welcome. Glad my video helped you. Please be sure to share my channel with others, check out my other videos, and rate thumbs up. Thanks!

[@Michael-kd2ny]

Hey its me again, I am now again having top end problems, as my scooter does not want rev all the way up going down the road, I used your video and did a .004 intake, and .005 exhaust config. I cleaned my carb and it will rev all the way up on the kick stand. any ideas? thanks, i can give you my number.

[@Michael-kd2ny]

Hey once again, I went from a year ago and i am now doing the valves, thank you for this video. great one bro.

[@catherineirkalla1717]

Excellent video that taught me how to adjust the valves on my TaoTao Powermax 150. Only differences: the shroud is removed a little bit differently and my valves, I have learned, need to be about 0.002-0.003 for this bike.

[@electronicsNmore]

Catherine Irkalla Be sure to check out my gy6 video playlist, rate thumbs up, and share. Thanks!

[@catherineirkalla1717]

I do! I moderate reddit.com/r/taotao and participate in /r/scooters and frequently post links to your videos

[@electronicsNmore]

Catherine Irkalla Thanks!

[@trapp7763]

I had to hold my hand over carb. or shoot starting fluid in carb. to get it to start. This did the trick. Thanks a million!!!!!

[@electronicsNmore]

Great to hear! Be sure to check out all my other videos, rate thumbs up, and share.

[@123abc8632]

Thank you my bike been Doing that

[@b-rent4733]

Same issue here. Will try this in the morning to see if it is the compression

[@cdmterra]

You are the man. One of the best instructional video I have every seen anywhere. Dude You Rock.

[@electronicsNmore]

Cedric Maple I try and make all my videos highly detailed and easy to understand. Thanks For Watching! Be sure to share my channel, and rate Thumbs Up.

[@Kismufin]

I just did my valve adjustment. Well they were really thight i have to say. After the adjustment my idling is perfect, starts right up. I wanna say thanks for this video, i hope u gonna post more bec its amazing. Thanks Peter

[@electronicsNmore]

+Kismufin You're welcome. Please show your support by sharing my channel with others, and rating thumbs up. Thanks.

[@Kismufin]

Thats the minimum, already did that ;)

[@lameurinaldrama5279]

Best mechanic how to video I've ever seen.

[@chrissholtz3718]

super video. followed your instructions. worked like a charm. valves were too tight. i gotta say it was a snap with your instructions. had it done in less than 20.mins. first time doing it. thanks.

[@electronicsNmore]

Glad you liked the video Chris! That is usually the problem, too tight, especially the lower(exhaust) valve. Be sure to share my channel with others and rate thumbs up. Thanks.

[@chrissholtz3718]

will do.

[@MrStevenhaynie]

Thanks for the video. I recently purchased a used 150gka-2 and this was by far the most useful video I have found to help me start getting it tuned up and running better. Still a loss of power to deal with but I'll figure that out eventually. Thanks

[@electronicsNmore]

Remove the spark plug when the engine is warm, and screw in a compression tester and crank the engine to see if the compression is good. 125-150 psi range is a new engine. Anything under 100 is not good. You could have crud in the valve seats or require new piston rings. Thanks For watching! Be sure to rate Thumbs Up, and share my videos

[@MrStevenhaynie]

electronicsNmore Thanks for the advice. I'll give that a try and see if that's where my problem is. Thanks

[@NardBasket]

Excellent in-depth video, thank you! I have my Tao Tao 50cc all pulled apart right now, and I'm just waiting for the feeler gauge to come in the mail. I'll have this video open when I make the adjustment!

[@electronicsNmore]

Glad you enjoyed the video. Please share, rate Thumbs Up, and watch my other videos as well. Thank You!

[@noot7109]

I'm a noob scooter-er and this video helped A LOT. Thank you.

[@electronicsNmore]

You're welcome! To learn much more, be sure to watch my "GY6 Scooter" video playlist below and be sure to share my channel with many others. Thank you kzbin.info/www/bejne/a6fPYqCoibt2h5I

[@edwardjames6070]

pretty damn good man. you explained alot about the actual spinning of the flywheel and what you can expect at the valves.

[@rickmelkonian5273]

Outstanding video. You explain the problem and then the fix perfectly without all the ranting and wild chatter. Thank you and keep up the great job.

[@electronicsNmore]

Thanks Rick! Be sure to rate thumbs up, check out my video playlists, and share my channel with others.

[@SuperJamster1]

Thank You! My bottom valve was completely closed so although it would run, it won't stay running. Nicest video online for this. I appreciate all the work you did to put it together.

[@electronicsNmore]

Glad you found the problem! The best way to thank me is by watching my videos and sharing my channel with others. Thank you

[@SuperJamster1]

I've been working on 2 cycle scooters for years, but these are new to me. I bought it in pieces, so putting the puzzle together was a challenge. It was multiple problems, but this was the most frustrating because it would run, and then won't. Thank, I'll watch more and let my friends know.

[@gregatron4528]

I will have to try this in the next couple days. I was riding for the second time ever (I have about 30 miles on it) and on my way to work, I went around a turn, and she just bogged down and died. So after some google searches, this is one of a few suggestions. This one sounds most likely it tho. Thanks for posting and I will update on results.

[@electronicsNmore]

Sounds like an ignition system problem. I have a video for that also. :-)

[@gregatron4528]

Problem Solved! You are exactly correct! I am just now logging on so I didn't get to see your reply but I'll tell you what happened. In this video at 4:32 "this pipe going around" .. That pipe on mine is shaped differently and it goes up and passes the ignition coil then becomes an insulated rubber hose. The ignition coil (or spark plug wire) was up against that chrome pipe and it had melted halfway through the wire. I removed the ignition coil, tested it for ohms, it checked out normal. Put it back, tried a spark plug test, it was a weak orange spark .. Plugged it in, scooter started up.. Til I kinked the coil where it had melted, and there ya go the scooter shut right down on me! so you are right on the money with the ignition prob.. Plus thanks for the help removing panels in this video. Knew what to do right away when I got home!

[@JoeFranklin-d7j]

Thank you. you made me understand everything that you talked about and I will try it on my moped latter today.

[@MindKontrolleProject]

Nice info on getting it to TDC w/out removing the fan cover

[@vernstires7186]

Great Video, I like a tight 05mm myself. But I have found that some bikes run better with 04mm and others up to 06mm. I have a valve setting tool but I prefer using a box end 9mm box for the nut and the tiny end of the valve tool for the screw.

[@electronicsNmore]

Glad you liked the video!

[@EarlG]

Great write up! Just wrapped up my valve adjustment on my ZNEN 150 without any issues.

[@electronicsNmore]

Thanks Dave. Be sure to rate thumbs up, check out my "Useful tips" and "GY6" video playlists, and share my channel with others.

[@TheFrodo125]

One of the best vids I have seen on this subject

[@electronicsNmore]

Thank You Nathan. :-)

[@theofficialbgame]

Ordering a new carburetor tomorrow, that doesn't solve my problem then I'm using this video. Good job.

[@electronicsNmore]

Hope it works out for you. Be sure to look over my "GY6" video playlist below, rate thumbs up, subscribe, and most importantly share. Thank you! kzbin.info/www/bejne/a6fPYqCoibt2h5I

[@rustyboy57]

Really hoping this works for my scooter, it's lost much of its power and i was unsure why, just discovered this video and ordering the tools to be able to do it. thank you

[@electronicsNmore]

Sounds like the valves need adjusting, or a compression(piston ring/valve) problem

[@AmericanMadeAdventures]

Following your guide now and about to do my Tao Tao 150cc scoot. Will let you know how it turns out. Thanks for this resource!

[@blaskedryck]

Hello, It's been five years?

[@AmericanMadeAdventures]

@@blaskedryck worked well

[@amgadghaly6218]

good work man : nice shooting & explanation

[@electronicsNmore]

Thank you!

[@CharlieRocRevolution]

Great vid. I brought an older scoot and that pipe over the valve cover is missing. What is that pipe called and what's it do?

[@electronicsNmore]

It's an "EGR" cover. Exhaust Gas Recirculation.

[@scottsullivan7716]

Mine has that and a PCV circuit. Love my 06 Kymco GrandVista 250.

[@coquikarts]

I like the video..!! I just want to add that I preffer to find the Top dead center by taking the spark plug of and carefully introducing a small screw driver. That way I am 100% sure the the timing is correct. A simple teeth off on the camshaft would give a degree.

[@electronicsNmore]

The timing marks should be accurate, but you can do it that way also. Thanks for watching!

[@PopHousePop]

Great video. Exactly the process. No surprises. Solid Pro-tips!

[@electronicsNmore]

Thanks! Be sure to rate thumbs up and share.

[@loolver5209]

Such terrific attention to clear and thorough instruction for the viewer here, thank you! Just for that, I SUBBED. ;)

[@electronicsNmore]

+Lo Olver Glad you enjoyed the video! Be sure to share, and rate thumbs up. Thank You

[@loolver5209]

Yesiree!

[@pujo28]

I have a 50cc. Does the oil need to be drained first?

[@electronicsNmore]

No. Place scooter on center stand.

[@gregorybolton6599]

Brilliant vidio mate very detailed very calm and relaxed could watch this all day

[@electronicsNmore]

Glad you enjoyed it! Be sure to check out my GY6 video playlist and other playlists, rate thumbs up, and share with friends. Thanks

[@jordanrowan2537]

I am definitely trying this tomorrow I’ve got to ATVs that have been broke down for almost 2 years and they where both a pain in the ass to start after the starters went out

[@electronicsNmore]

Good luck! Be sure to watch my GY6 video playlist for other great videos. Thanks

[@jordanrowan2537]

Hopefully this does it cause I haven’t been able to locate an adapter for my compression gauge to check that I know the white one has low compression but it would do atleast 30 when it was running the green one was kinda slow but very torquey it would pull logs heavier than me and they are only 50cc engines

[@fatihpc]

Very good video. How many mm did you adjust the intake and exhaust settings?

[@electronicsNmore]

I should've said in the video

[@fatihpc]

@@electronicsNmore thanks. But, I do not know English. I don't understand for your subtitle.

[@jaebeumrun]

Thanks for uploading this video :)

[@electronicsNmore]

Glad you enjoyed the video! I have a lot of excellent videos on my channel that cover many different subjects, so be sure to check out my extensive video playlists(especially my GY6 video playlist) for other videos of interest to you, rate thumbs up, and share my channel with others. Thank You

[@serkanbilici7457]

The hole in the camshaft hole is in the correct position but the alluminium piece falls in place with the F line instead of the T line.I think something is wrong?

[@serkanbilici7457]

I had my cilinderhead changed by someone because my spark plug hole was threaded,so the guy who installed the new cilinder head didnt do a good job?

[@michaelarmajo4572]

Thank you, it worked! glad you did this.

[@electronicsNmore]

Glad it helped Mike! Be sure to look over my extensive video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others. Thank you kzbin.infoplaylists

[@thekids_callmeboss6577]

I'm confused on how to align that piece metal with the T line. You showed how to rotate clockwise to get to the T line but how do you get that metal part lining up. Sorry if I'm stupid 😁

[@maxexelby7566]

Best video on the whole of youtube explaining valves. Quick question, what are the main factors at causing low compression in a moped/GY6 engine?

[@electronicsNmore]

Max Exelby Low compression is caused by valves out of adjustment, incorrect timing, or worn piston rings.

[@maxexelby7566]

cheers

[@IDOL4GAMING]

Don't suppose these settings would be the same for a lexmoto valencia.50cc zn50qt-k, thanks

[@thubb3628]

Thank you for the info. I would like to know, is there scooter still running. I see this was made six yrs ago.

[@electronicsNmore]

I used it for 5+ years, then sold it. Thanks for watching!

[@richardconnell2677]

Really good video buddy. I have a 4 stroke 50cc and am about to do the valve clearances.

[@electronicsNmore]

+Richard Connell Thanks for watching Richard! Be sure to share my videos, and rate thumbs up.

[@richardconnell2677]

No problems buddy. I have just done my valves, they seem ok but a little lag on initial pull away? Do you think I may have gone too much? .005mm

[@electronicsNmore]

Richard Connell Try .003" intake, and .004" exhaust. I used that a lot.

[@richardconnell2677]

Ok mate, will give that a go tomorrow. Thanks for the advice. Much appreciated.

[@richardconnell2677]

Had a look at the manual and it said .05mm on the inlet and .10mm on the exhaust, that is hell of a difference. I tried it as the manual stated, now Laggy, slow no acceleration. So I will go with your advice.

[@The1NightBaker]

I have a icebear Trifecta 150cc gy6 long engine. On a factory label it states the valves are top valve 0.08 and bottom 0.09.....some video's say 0.04 top & bottom 0.05 which is right.

[@TheDON1326]

Thanks for the help. I wish I found your videos before spending money throwing parts at the problem. Instead of 7 dollars for a set of feeler gauges and about an hour of my time.

[@electronicsNmore]

You're welcome. Glad you liked my video. Please share my channel with others and rate Thumbs Up. Thank You!

[@vernstires7186]

You need the feeler gauge.

[@capnchip]

I watched this carefully. Here are two things that I feel should be absolutely clarified. He said "ohohfive" very quickly when using the feeler gauge This means .005 inches Do not use Millimeters..... the thickness used to set the GAP of the rocker arms. It is marked on the feeler gauge and will very quickly be unreadable later. So make a mark on the gauge leaf that you can easily recognize later. Turning the engine to get to the right point for TDC (Top Dead Center) where all valves are fully closed so the gap can be set, MUST be done so that the engine is turned in the clockwise direction with the wrench. Backwards does not work well! In reality, a very informative video. Thanks!

[@williambaker2547]

much appreciated I know cars but these things are fussy I did this and noticed a difference just from starting it

[@electronicsNmore]

Great to hear! Be sure to check out my video playlists, rate thumbs up, and share my channel. Thanks

[@hellxxslayer9660]

hey just wanna say thanks for sharing your knowledge man

[@electronicsNmore]

Thanks for watching Jordan! Be sure to check out my video playlists, rate thumbs up, and share.

[@JoseRodriguez-en8bo]

I hope ENM or one of the commentators can provide me with an answer. My 150cc brand new scooter has trouble starting after its warmed up(sometimes it won't start at all). Could a valve adjustment be the culprit or is there a better or more realistic solution? Please help!

[@electronicsNmore]

Adjust valves first

[@lioguada3264]

Hello, your video is very good, thanks for sharing it, I have a gy6 with a high-flow filter and a little richer fuel, what size do you recommend for my valves? My idea was .004 intake and .006 exhaust. thank you

[@mountaindave8575]

Very nice video! Not only that, it's a Velocity scooter just mine and my wife's!!

[@electronicsNmore]

Thanks Dave. Don't forget the thumbs up! :-)

[@mountaindave8575]

electronicsNmore You got it!

[@mountaindave8575]

electronicsNmore Adjusted my valves today and Wow! The exhaust valve had zero clearance; more like the exhaust valve never shut all the way. My scooter hasn't idled when it is cold for quite a while but no problem now. I would suggest adjusting your GY6 valves after the first 100 miles. I can tell mine were never adjusted properly in the fist place. I'm 65 now and I dunno' how I made it before KZbin or Google! :-)

[@electronicsNmore]

Very common for the exhaust valve to lose clearance. Your scooter should start/run better now. :-)

[@tessyvegas]

excellent video i like how to showed how to take off the cover and use the center kickstand as well as adjusting the valves with your hand..a beginner can do this because your veido is very detailed...you just forgot to tell them to unplug the battery lol...probably not a big deal but know knows

[@electronicsNmore]

No need to remove the battery cable. Just make sure the key is not in the ignition, and the start switch is in the off position. :-) Thanks for watching!

[@jeffnations6649]

Do you have any suggestions when the T and the Spocket is not properly inline? I think it's out a tooth on the chain?

[@electronicsNmore]

The chain would need to be loosened up so you can reposition things.

[@jeffnations6649]

@@electronicsNmore thanks for your help

[@greatcesarsghost]

So the gauge clearance will work for any gy6 150.cc I don’t have wrench’s or gauges but found at local auto parts tools will be $ 25 for

[@electronicsNmore]

You can find very thin(.004/.005") strips of metal at a hobby shop for only a couple bucks.

[@sandeepgc9668]

I dont have a feeler gauge at the Moment,what do you guys reckon to substitute that.

[@electronicsNmore]

Do it right.

[@josejuanaguilarlopez6615]

For a gy6 motor 180 cc atv is the same procedure ? Thank you for your timew

[@electronicsNmore]

Yes. Thanks for watching!

[@yofo8621]

Thank you for your response. I am grateful for your help... I went ahead and did the adjustment, then rotated the flywheel 2 complete revolutions and checked clearance again and then closed everything back up..I removed the carb disassembled it and cleaned it all out + jets. It was clean to start but now it it is extra clean. Long story short - I do have fuel flowing to carb -I do have spark - no vacuum leaks -battery is good -kickstart does not work, sometimes it gets stuck. -electric start will turn but not engage the flywheel 90% of the time.. and it makes a horrible grinding noise 100% i press it. WHAAAAA??? What could it be? I am stumped!

[@electronicsNmore]

+Leo Kayach You need to post your replies where you posted your original question. I have no idea what we discussed earlier! I answer many questions on a daily basis, I cannot keep track. Sounds like a bad starter clutch/gear.

[@gjoffis]

Hey great video man! The clearence is 0,05 in metric mm? Or inches? Greetings from Norway.

[@electronicsNmore]

1.25mm or .05"

[@gjoffis]

@@electronicsNmore ok great mine were at less than 0.05mm now. Hopefully the reason why it was near impossible to start. Thanks for the quick answer.

[@electronicsNmore]

@@gjoffis If the gap is too small, you'll have problems.

[@gjoffis]

@@electronicsNmore yeah, now it starts like its new from factory🤩 thank you for the help.

[@nikesan2472]

0.005 is 0.127mm, not1.25 I think.

[@dezyrides2519]

Any suggestions or tips on how to adjust them without the little measuring tool you slip under it? Should there be barely any play or none or alot? Anything

[@electronicsNmore]

Use a thin business card.....should work.

[@Skeletor419]

awesome job man, really. i noticed that tube you had to remove in the beginning seems pretty important, what exactly is it for? i bought a used scooter and the guy has that tube cut and pinched off and nothing connected to where you removed the hose.

[@electronicsNmore]

What tube?

[@jrockner957]

well, both the tube at the top of the valve cover, and the metal pipe/tube you had to move out of the way. mine is cut and pinched off and where your rubber hose attaches mine is just bare.

[@georgemorgan94]

EGR (Exhaust Gas Recirculation) It takes inert exhaust gas and mixes it with intake air. Reducing the intake air from 21% O2 to 16% O2 will decrease temperature of the engine which will lower NOx (Nitric Oxide) emissions because NOx is formed at 2800F.

[@clive00rennison]

So I did a valve adjustment and I started it before putting the crankcase cover back on incase I needed to re adjust, now have oil spewing out from in the middle of the rocker arms?? Any idea what's happened please?

[@electronicsNmore]

That's normal. You don't run the engine with the cover off. Be sure to watch my "GY6 Scooter" video playlists, and share. Thank you! kzbin.info/www/bejne/a6fPYqCoibt2h5I

[@clive00rennison]

Thanks for the reply, it's still puking oil everywhere, when I take the cover off it looks like it's coming out of the groove in the top left of the rocker arms, it's spat LOADS of oil, do I need new rocker arms and cylinder head? The tapping is really bad now no matter how much adjustment I do

[@lilman1796]

Thanks for the video, Friend, awesome video ,keep up the great work.☆☆☆☆☆

[@GeezerDust]

You make great videos. Appreciate you sharing.

[@electronicsNmore]

Glad you enjoy them. Be sure to rate thumbs up and share my channel with others. Thanks!

[@Kismufin]

hi I have 150cc chinese scooter. I have idling problems on it. it is hard to start than idles really high whatever I do with the idle screw. do you think its valve adjustment probelm? I mean it has only 1300 miles on it. change the carb already at least now starts. or maybe the cdi? or its not related to my idle?

[@electronicsNmore]

+Kismufin Yes. Sounds like it. Check the valve clearances first.

[@Kismufin]

Thanks ill do that. So it can cause high idle like 3500 and sometimes rising. The gear doesnt see to stop... Many thanks for the quick answer

[@Kismufin]

Ok so i tried the new voltage regultor. Didnt work out. Finally i get voltage meter...started to look around with it. I pulled the magneto swith of...the 3 pin one nd left the 2 separate for the ignition. Put the voltage meter black pin to the green wire, the red first to yellow than white. THe results either of them went above 4 v on the scale. Am right that it should be for 12v to 60 when im increasing the rpm?? Is it possible that the stator give perfect ac for the ignition...guess thorught the cdi, but no normal ac for the lights?

[@itbsection8980]

+Kismufin You have a vacuum leak between carb and engine head, when running spray WD-40 around intake and any hoses you'll find it .

[@jjstewart2120]

A big help friend .much appreciated

[@electronicsNmore]

Great to hear! Be sure to watch and share my GY6 video playlist below. Thank You! kzbin.info/www/bejne/a6fPYqCoibt2h5I

[@fester16100]

this look a lot like the kymco movie 150 2013...how does the matt come off to get to the screws under it...? I wanna change my plug..

[@electronicsNmore]

Every bike is different.

[@jonasDoguedeBordeaux]

hi I have a leximoto arrow it has just over 3780 miles will I need to do anything it starts ok

[@electronicsNmore]

Definitely check/adjust the valve clearances. Intake .10mm / exhaust .15mm. You'll need to unscrew the caps on the valve cover to access the adjusting nuts. Also unscrew the cover by the flywheel on top so you can line up the timing marks before adjusting the valves.

[@ronking5878]

Thanks for this video, adjusted valves on two scooters this way.

[@electronicsNmore]

+Ron King You're welcome Ron. Please be sure to share my channel with others, and check out my video playlists as well. Thank You!

[@jimsox881]

+electronicsNmore tried

[@baben5062]

hey bro I have a piaggio fly 50cc I have big problem to start the engine when the motor is cold I really suffer I cleaned the carb changed the air filter change the plugs but still the same problem. I need almost 1 hour to start the engine. Is the valve adjustment can be solution

[@electronicsNmore]

Do you have an enricher?

[@baben5062]

@@electronicsNmore yep the carb have enricher but since I bought the scooter its not connected. Ps. My scooter it a used one not a brand new.

[@jordanrowan2537]

Please help me understand what I’ve found ok so I’ve looked at the wiring diagrams for this little quad relating to the ignition coil starting at the CDI. So the two pin single plug has one black wire which is the ignition switch input that supplies the CDI with power from there I moved to the 4 pin 3 wire plug and checked the pin on the box directly it reads that is a hot wire like it should be but magically when I plug the harness into it I changes to ground

[@jimsox881]

Thanx ENM. yes I only put one head on it. Lol damn voice text. I'm going to have to bring it in somewhere to have a compression test I don't know what the deal is. I've taken apart and put it back together several times still the same thing. Has a hard time starting. Even with fully charged battery sounds like it will not turn over like it is stuck or something. Any advice? Thank you

[@electronicsNmore]

+jim crabtrey Timing has to be off, of there is a compression problem.

[@mattuchiha]

hey i have a 2016 taotao 50cc with 100cc big boar kit installed. after installation it ran great for 10mins. the stock carburetor and manifold were kept in during this test drive. but after this test drive i guess what is called, bogging out, happened when i pulled on the throttle. so what i did first was install a bigger carburetor and manifold. the issue didnt leave. so i upgraded the cdi,sparkplug cover, cold intake, and flywheel fan, but no nothing! whats next??

[@electronicsNmore]

I have no idea because you performed some serious modifications to an engine that was working fine.

[@backslash_iii]

If this helps anyone, I'm working on a Schwinn (chinese) Valo 150 and the TDC mark is on the actual flywheel (attached to the cooling fan). You have to take off the fan cover, and there's almost a needle/arrow machined into the crank case that you line up with the marks on the flywheel. Kind of a bummer they didn't put an inspection port or anything but it's pretty easy to see when you get it apart.

[@electronicsNmore]

James Hare Thanks for posting that info. :-)

[@jeffwanamaker7397]

James Hare i have a starting problem it looose its fuel prime it will stay running when i hold throttle any ideas i also put a stator in and cleaned carb i cant find any info on these scwinn valos any help would be gladly appreciated

[@electronicsNmore]

I don't know anything about valos. Sounds like a faulty carburetor or enricher. Also make sure the engine compression is good, and the valve adjustment is correct. I have another video called, "Troubleshooting GY6 Engines". Thanks For Watching!

[@backslash_iii]

Yeah the carb they put on it is pretty junk. I'm replacing mine as well.

[@jeffwanamaker7397]

what can i use for carb scwinn seems to be odd when trying to get parts

[@TheDylanJoyce]

I'm thinking of replacing the Carb, Clutch, Variator, and CV Belt all at once and hope it'll run much better. As for it's idle, it's always been stalling ever since I bought it, but now it always wants to take off on idle. Usually I give it a little gas so it wont but even when I don't I can feel it pulling away. If I do manage to hold it steady without gas, it stalls.

[@robyn31100]

Hello, I had to rebuild my engine gy6 150cc I was able to get it running for a bit. Was able to start very easily as if it were perfect. Got good speed but torque did not seem to strong I am assuming the belt was the problem for low torque because I replaced and it seemed slightly longer than the previous one. Anyway drove it one day and I was pulling off scooter died. Was able to get it started but idled terrible, carb cleaner cleared it up but once I gave it throttle it died. Got a new carb and new starter. Its rolling over and pulling fuel. Spark plug is getting black just trying to start. I am pretty sure it is my valves. When I was rebuilding and setting valves I noticed that tdc both valves were closed but opposite side of tdc (180 degrees). Both valves are open. For the valves to be closed at that point I have to have a the rocker arms open way to wide. Are they supposed to be closed at 180 degrees after tdc. Or do I have something wrong.

[@electronicsNmore]

Robyn Knowles Just follow this video exactly, and you will eliminate the valves as a problem. Make sure the timing marks line up and the valves are closed. If they are not closed, then rotate one full turn to the timing mark.

[@robyn31100]

I used your video to set the valves. It ran flawless for me I spent over a year trying to get it flawless. I have a good mechanic background but this Chinese bike is driving me crazy. I live in the Bahamas I am ready to turn this into an artificial reef. Its driving me crazy. Just need another set of eyes to help me out. Do you mind if I send just a short video of what's going on. From watching your other videos I am sure you can help.

[@electronicsNmore]

I suspected you were Bahamian by your last name. What Island?

[@robyn31100]

electronicsNmore Freeport, Grand Bahama

[@electronicsNmore]

I would take a compression reading on the engine when warm. If you get anything under 100psi, then your engine is not properly timed, your cylinder or piston rings are damaged, your valves are not properly set or seating properly, or the head gasket is bad. That is all I can say. Good Luck!

[@ashevillestorys837]

Can the valves be so tight that the scooter won't start I'm guessing the exhaust valve but I honestly don't know gets great gas and spark I'm going to try this when I get home

[@electronicsNmore]

Yes

[@sandeepram8429]

Hi, my scooter was making noise, I did the valve clearance and it was solved, but after two days it's like before again. What could be the causes and how could I resolve it?

[@greatcesarsghost]

So once at TDC you say valve have to be closed does it matter because once you are there ( TDC ) you are going adjust them to proper settings so why should it matter open or closed if you are set at TDC

[@electronicsNmore]

If they're not closed, that means you don't have it set correctly.

[@greatcesarsghost]

I’m not at TDC then ?

[@MIJusticeLeague]

I'm doing this valve adjustment now and when I get it to TDC I do not have that big hole between the two head bolts. There is however a small hole and a larger hole but I'm not at TDC when I have the big hole where you explained.

[@electronicsNmore]

Everything must line up as shown.

[@nathanfiliponi6670]

electronicsNmore I have a 2011 VIP scooter it starts and Idles at around 4K rpms then it dies I installed new spark plugs and a new fuel vacuum pump and I also have a new electric choke coming in what do you think the problem is?

[@electronicsNmore]

Could be many things. Check for vacuum leaks and also check the carburetor enricher. I have a video for that. Thanks

[@nathanfiliponi6670]

electronicsNmore thank you very much if you can give me a link for a vid on checking the vacuum hoses and I have a new enricher coming in thanks :)

[@chriscybulski3579]

Super helpful, thanks to this video i finally started my scooter in months. But it seems to be running rich, the idle is fine but once you get on the throttle it dies down. Does anybody know a way i can fix that ?

[@electronicsNmore]

Either the carb(I have a video), or old gas inside the tank.

[@ItalianSupercars12]

electronicsNmore I have a 150cc stock motor and both my valves have bent about 5 times in the pass month, what can be causing the valves to bend so often??

[@leesworld625]

what can i use to help know the resistance and all like that piece of flat metal you had slipping thru there lol

[@electronicsNmore]

It's called a "feeler gauge".

[@leesworld625]

@@electronicsNmore TY, and what number am i to be at? Im told i needed to adjust my valves-- my scooter will start but wont idle correctly no matter how many times i try, and when down the road bout half a mile and on full throttle it shuts off and dies, then struggles to start back up.-- My bike has 6,488 miles, last time valves were adjusted was when i added a BBK last summer/ fall --- Were they right? I need my valves adjusted?

[@keith23uk]

"Placing the scooter on the centre kickstand allows the rear of the engine to drop and allow the oil to drain" Do you need to drain the oil out before doing any of this? If I don't then will need to put some weight in the back end so the bike doesn't rock towards me as the stand seems to be smack bang on the balance point. Maybe its a good idea to drain the oil first?

[@electronicsNmore]

+Keith Mass No need to drain the oil. Once the scooter is on the center kickstand, the front wheel will be off the ground and all oil drains away from the valve cover(to the rear). Place a 2x4 or thicker object under the front wheel to keep the scooter from rocking. Thanks

[@keith23uk]

+electronicsNmore Thanks good idea! :D Its only 3 years old by the way. Lexmoto Tornado 125. I am going through the checklist for possible reasons why it will not idle and dodgey start. Not the idle setting as tested that having the bike running had to hold on the accelerator slightly so would not cut out and adjusted but still cuts out. Motorcycle SOS recoveryguy tested that too when I broke down. Short journey into city. Running fine then came back 5 mins later and would not keep in idle at all! I think bloody road ramps could have caused something the go dodgey! Bloody council... I dont even go fast over them.... Checked battery and tested, got spark for sure. Spark plug in great condition and gap is correct. Cant see anything disconnected or leaking hoses. Do suspect the fuel vacuum pump as they likely to corrode their seal internally but got spare coming anyhow as they regularly go wrong apparently. One of the first things Motorcycle SOS guy suggested. Second part suspect is the auto choke but I have a new spare one of those anyhow :)

[@electronicsNmore]

Make sure the intake manifold is not cracked, and also test the enricher which I have a video for. I would also inspect the carb. I have a video for that as well in my GY6 video playlist. Thanks.

[@keith23uk]

+electronicsNmore Getting closer! Found the ideal idle on the throttle. Just a 2 man job now to get the idle screw correct. Replaced the auto choke aka enricher as didnt move with 5 mins of power. The battery is pretty dam rubbish so need to replace that soon. So cheap crap Lextec Ideally want Yuasa :)

[@electronicsNmore]

Keith Mass Buy a gel battery. On Ebay they are fairly inexpensive.

[@velcrodreams178]

Great video

[@electronicsNmore]

Glad you enjoyed it

[@Quattro4k82]

Thank you for your time bud.

[@electronicsNmore]

You're welcome. Please watch and share my "GY6" video playlist below. Thanks! kzbin.info/www/bejne/a6fPYqCoibt2h5I

[@mohamedanbar8011]

Should the exhaust and intake clearance be the same or the exhaust be bigger little bit , and what numbers of clearance should i go with ?

[@electronicsNmore]

That was all mentioned in the video, and video description area. Thanks for watching

[@mohamedanbar8011]

electronicsNmore what adjustment do you recommend in a hot climate 0.005 or 0.004,0.005 ?

[@jeffquinones7532]

whats the clearance if i installed a 100cc big bore on 50cc. a shop said .008 for both

[@electronicsNmore]

That sounds a little too wide. I'd use .005" for both.

[@ronslingerland2]

Ik heb een 50 cc en doe het zelf om de 5000 km alleen als nieuw na 500 km ingereden te hebben als je geen problemen hebt kom er niet aan maar bij een grote beurt kan altijd nakijken .

[@JamesDRacing]

Great video. Did mine at 004" on both. Gap might be smaller though because the feeler drags quite a bit. Is 003" for E and 004" for I a better setting? Thanks

[@electronicsNmore]

Hey James. Usually both are .003" to .005", but I sometimes use .004" intake and .005" exhaust. Make the exhaust slightly larger, not the intake. Thanks For Watching! Be sure to share and rate Thumbs Up

[@JamesDRacing]

electronicsNmore Ah typing error I meant 003 for intake and 004 for exhaust. Set that and it was great. Rattled a bit though but the "ticking" noise isn't excessive so its fine. Thanks for the great video made it really easy to do. :)

[@discothequee1]

Thx, it is a very hard job to do for every thousand kms like some say

[@electronicsNmore]

Eren Doesn't take that long to do.

[@labakis1]

@@electronicsNmore my sym's 150cc manual says every 3000 miles to adjust valve clearance ! it has the same engine...

[@electronicsNmore]

@labakis1 Yes, SYM says every 3000, but many go as low as 500 miles. Thanks for watching!

[@maurobermas2457]

Is cause with the on and off the engine?because, mine it will start but it will die down in a few minutes.just wonder!

[@electronicsNmore]

No way of knowing. Adjust the valves as shown so you can rule that out as the problem.

[@ejs6097]

Another great, super helpful video my friend. Thank you!

[@electronicsNmore]

EJ S Glad you enjoyed the video! Be sure to rate thumbs up and share. Thanks

[@larrysinger9359]

Thanks for the video. I've watched several of your other videos, and I've got to tell you, I'm a much more informed scoot owner thanks to you...anyway, I've got "hard, cold-start" issues, and I'll be adjusting my valves, because everyone pretty much says that's how to handle the issue. My question is, why does adjusting the valves help with cold starts??? Thanks.

[@electronicsNmore]

Thanks For Watching Larry. Be sure to rate thumbs up and share. If the valves are out of adjustment, the cylinder will not have the proper compression. Everything has to be timed correctly for proper engine operation. If the valve is too tight(likely in your case, then the valve may remain slightly open reducing compression making it harder to start.

[@ВлаткоБлажевски-ц5ф]

so is this in inches or cm/mm pleas tell me i have to adjust them on my scooter i think its low on compression and sometimes it make like PUF sound like to much air is escaping from smal spot somwhere from the engine i think its because of the valves THX

[@electronicsNmore]

Vlatko Blazevski .004"/.005" (inches)

[@ВлаткоБлажевски-ц5ф]

oh ok thx but i have no idea how much cm/mm it is google convert say stupid shits about it

[@zapurdumbass]

Found this video last night after many suggestions that my rough start of valve tolerance related. New GY6 and new 24mm Carb, could this still be the issue? I have to hold the throttle open to get it to stay running during cold starts. After about 1 minute it idles fine. Is this an intake valve characteristic?

[@electronicsNmore]

Sounds more like a carb/enricher problem. Check out my GY6 video playlist below and share. Thanks! kzbin.info/www/bejne/a6fPYqCoibt2h5I

[@zapurdumbass]

After adjusting the valves, they were definitely tight, but the issues persists. Your enricher/auto choke video is excellent as well, and that’s next on my list to check! Thanks for the excellent videos and suggestions

[@gadgetsgimmicksandtech]

At 3 minutes 32 seconds what is the big black hose in the centre, and where does it go to? I have a quad bike with this engine and it has this hose on the engine, but the other end is free with a clip on the hose so it obviously used to go somewhere but I can not find out where - thanks.

[@ScottFaust]

Thank you, this was PERFECT!

[@electronicsNmore]

Glad you enjoyed the video Scott! Be sure to watch my GY6 and Auto/Mechanical video playlists below, and most importantly share my channel with many others. Thank you kzbin.info/www/bejne/a6fPYqCoibt2h5I kzbin.info/www/bejne/np_HaINthMSpe7M

[@baben5062]

@@electronicsNmore hey bro I have a piaggio fly 50cc I have big problem to start the engine when the motor is cold I really suffer I cleaned the carb changed the air filter change the plugs but still the same problem. I need almost 1 hour to start the engine. Is the valve adjustment can be solution