How To Assemble a ST EF41 Shimano Shifter

A week ago I disassembled a ST EF41 Shimano Shifter. Initially I had no plan to put it back together, especially after I had disassembled both left and right shifters and had all the pieces mixed together in one bag!
I saw some comments on my original ST EF41 video that a guy said he had reassembled his, and after doing some research and watching a few videos, I decided to put the right shifter back together. It took me a bit to get the left and right sides separated, but it all worked out, and I came up with a few tips of my own to make the process easier.

[@jiffyjames]

Using that piece of floss to set the final spring in place was genius! Helpful video as ever.

[@JoeyMesa]

Thanks! I appreciate you taking the time to comment!

[@kirillusmanov6780]

Единственное видео которое мне помогло, так как не мог найти видео с такими же моноблоками

[@PedroAndradex]

I opened that shifter around 2pm, i finished 8pm, i was nervous because i didn't knew how to assemble this back, after watch your video it takes only 3 minutes, AWESOME, dude thank you SO MUCH, you helped me a lot!

[@mcelzz]

Cara tomei um rola na lama e o meu ficou ruim, desmontei... Mas limpo com WD ou água e detergente pra tirar o barro?

[@JoeyMesa]

You're welcome! Thanks for taking the time to leave feedback!

[@PedroAndradex]

@@mcelzz então Marcelo, eu sugiro água e detergente neutro de primeira, WD pode deixar escorregadio as coisas pra remontar, então dá uma lavada legal e depois monta

[@donsperlin7891]

Very important to get the flat white disc in the correct orientation on assembly or the upshift lever cannot be completely installed into the housing. This is the one installed directly onto the large metal component in the video. It appears that all 3 positions are the same but they are not. And he makes getting that metal part with the lever installed look easy. I think he's a magician! Took me much longer but could not have done it without this video! Thanks Joey.

[@JoeyMesa]

Yeah, this shifter is like doing one of those challenge puzzle things! It took me several tries to do it before I made the video. Thanks for taking the time to leave feedback!

[@petermac5033]

First class guide, clear, well paced explanations and tips. Shifter back and working.Thank you

[@JoeyMesa]

You're welcome!

[@emh2017]

Thanks so so so much for this video tutorial! I don't even know what I would have done without it!

[@gaborthury7232]

I'm very, very thankful for this video. I had to assemble a very similar shifter (ST EF 40) and was struggling figuring out how to put every piece to its place. Your video was super helpful, I managed to put everything together. Thank you very much, you saved my day!

[@abongiledhladhla3521]

Did it work properly after u put it together? Pls man, I need help to make this thing work.

[@gaborthury7232]

@@abongiledhladhla3521 yes, of course!

[@abongiledhladhla3521]

@@gaborthury7232 is there a way you can help me with it?(if you can and have the time to)

[@paulhewitt1488]

It may well be the 50th anniversary of the moon landing and as a child at school I watched with amazement , this is right up there 😀 You have the patience of 10 men. Terrific change of pace and thoroughly entertaining. Keep up the good work 👍👍

[@JoeyMesa]

Thanks Paul! I really appreciate your kind words and you taking the time to leave a comment!!!

[@eduardochavez911]

Thanks Bro, Your tutorial helped me to assemble my shifter No ones else could help me like you

[@JoeyMesa]

You're welcome Eduardo! Thanks for taking the time to leave feedback!

[@radiocontrolled9181]

Excellent video hats off!! What a jigsaw puzzle this shifter assembly is! I cannot help but wonder about who the inventor/s are and how intelligent and how good at what they do they are to make such a complicated mechanism work perfectly. Amazing!

[@JoeyMesa]

I appreciate you taking the time to tinker with it and leave feedback! Keep on keeping on!

[@philgolden8619]

You sir are a diamond. Same instructions would be compatible for ST-EF40-7R, what a pain in the neck these things!

[@travissutton2294]

Idk what I did wrong so I'll probably have to watch it again 3,4,5 or six times but I just wanted say THANK YOU for making this video! My dumbass got myself into an unnecessary bind today trying to replace the derailleur cable and took almost everything apart only to find I didn't need to. Thanks again!!!!!

[@jamiearmstrong5675]

I did exactly the same thing mate,didn’t realise till it was too late that I only had to feed the cable through where the rubber grommet sits 🤦‍♂️

[@katayamakinen]

Just assembled my ST-EF-40. Thank you very much!

[@Wasbxt]

Excellent tutorial mate. Needed to disassemble the shifter as I couldn’t get the inner cable out and this was my only hope of reassembling this shifter so I thank you very much sir.

[@JoeyMesa]

You’re welcome! Glad you got it worked out and I appreciate you taking the time to leave feedback!

[@engkoskosasih3585]

Terimakasih telah membantu untuk mempermudah perbaikan shiter. 😀

[@InductedMist]

I never took mine to guts like this, just had a rear end accident that led to me replacing my rear derailleur; issues arose around getting my barrel adjuster reseated into the left shifter but with being able to see the internals like this is a huge help. I love the comment that quotes "You have the patience of 10 men" I'd disagree, I'd say the patience of 1000 monks. These seemingly were never meant to come apart and yet, here we are.

[@uwemobil8847]

Thank you so much. I gave up reassembling the shifter and was just before buying a new one. Your video helped a lot.

[@12345harv12345]

You are a hero! Nicely done! Just finished reassembling and greasing my sons bike shifter (it didn't shift up, only down)

[@mikl97470]

Thank you so much for sharing ! I was almost going to throw my shifter. Your video helped me to reassemble it.

[@JoeyMesa]

Glad it helped

[@____________________________.x]

As an ex Engineer I believe a designer should have to disassemble and reassemble everything they invent. Vote for me as Global Dictator and I'll livestream the Shimano intern's tears of frustration and regret as he tries to rebuild this thing.

[@JosephArias506]

A hero without a cape. Very helpful video dude thanks alot.

[@JoeyMesa]

Thank you! I appreciate your kind words and you taking the time to leave feedback!

[@ninjazzrhythm400]

Thank you so much. I dont know the people that gave this a thumbs down. This is easy to follow and easy crack (like a puzzle). After disassembling and assembling mine, I figure the best way to service this soak the whole thing in soapy water (use degreasing soap like dwn ultra). Agitate rinse it in a bucket, then spray with silicon spray (like the one you use on hinges).

[@JoeyMesa]

I appreciate that!

[@fernandojunior9393]

@@JoeyMesa Friend, I have the same one from your video, it is not returning to the gears, I have to pull the cable to return it, I disassembled and reassembled using grease and the problem still remains😢

[@michaelsteven1090]

Excellent..I have to rebuild the exact same lever for a customer and got stuck on the last top spring..dental floss! saved my day..👍🏻

[@JoeyMesa]

Right on!

[@tomlucas4866]

this video is absolutely fantastic what a life saver

[@JoeyMesa]

Thank you so much! I appreciate you taking the time to leave feedback!!!

[@Mango62uk]

Thanks so much for your time and trouble. It's saved me from buying a ST-EF41! :)

[@suhail7265]

Thank you very much bro If i go to workshop they said to change it I simply fixed through the tutorial 😘😘

[@JoeyMesa]

You are welcome 😊

[@carlosandresilva2344]

Brow, esse seu vídeo é de utilidade pública. Muito obrigado por disponibilizar esse trabalho na internet pra nós. Vai ajudar muita gente que precisa saber como fazer isso. Acabou de me ajudar. Fica na paz, abraço pra vc.

[@JoeyMesa]

De nada! Obrigado por reservar um tempo!

[@andrex9195]

Огромное спасибо за это видео! Только заменил тросик и заклинило переключатель на 3 скорости (левый), благодаря вашему видео разобрался и собрал шифтер обратно. Теперь всё работает как часики, спасибо 🙃

[@JoeyMesa]

Пожалуйста! Спасибо, что нашли время, чтобы оставить комментарий, я ценю это, и я рад, что видео было полезно!

[@auziarasillah3067]

thanks dude for sharing this vid. still using ef41 in 2020 lol. keep it up!

[@JoeyMesa]

Thanks, will do!

[@grindupBaker]

I'm repairing a front shifter right now. For "wants to pop out" at 10:07 I installed the nut which holds it all solid while putting the lever assembly on, removed & re-installed the nut when ready to put the final part on the shaft.

[@Rozario7]

Very useful. Thank you, sir.

[@campos008]

Great Video! It help me a lot! Thanks

[@JoeyMesa]

You're welcome! Thanks for taking the time to leave feedback, I appreciate it!

[@criscarrasaval5224]

Crack me salvaste la vida... me estaba volviendo loco!!!!🙌🙌🙌

[@user-st6rp8ef5g]

🙌🙌👍👌

[@theswimclub8582]

Nice video... I had taken the same left shifter apart and managed to get it together ... it took me 2 hours of tinkering.. i had to workout fixing the last spring.. i just used a really strong thread to get it in place... then i found this video

[@JoeyMesa]

Great 👍

[@theswimclub8582]

@@JoeyMesa im having a problem in getting the chain on Shimano tourney tz to get to the big cog though... And the spring on the derailleur keeps on slipping off

[@PavanKumar-mz9fx]

Very good teaching.

[@JoeyMesa]

Thank you! 😃

[@dragoslaur3962]

Thank you ,just fixed with your help

[@nassambetty]

Thanks man! It helped me a lot!!!

[@JoeyMesa]

Glad it helped! Thanks for taking the time to leave feedback!!!

[@user-cd9oe9ul7e]

Thank you for your video. Really help!

[@JoeyMesa]

You're welcome!

[@Forrest_Gamp]

Спасибо за помощь. 👍Полезная инструкция.

[@raziabegum2470]

Thank you very much for makeing this video Thank you very much 👍👍👍👍👍👍👍👍👍

[@JoeyMesa]

You're welcome! Thanks for taking the time to leave feedback!

[@kar3lio]

muchas gracias por este video, me fue muy útil, saludos desde Cuba

[@kar3lio]

Estoy buscando uno del ST-M091 pero el único que encontré no se ve bien, necesito uno con la calidad de este

[@Just1afsal]

You made my day

[@mathieulacas188]

Dude, you're the only one who explains this as detailed as you did. I was going nuts. Then I found your video 🙏 I fucked up on the white disc position. Now it's ok, but the sixth click doesn't really work..have a suggestion!?!?! Pleaaase 🙏

[@JoeyMesa]

The only thing I can think of is something is either broken or out of position. Disassemble and try again or purchase the ST EF51 shifters that are a more durable shifter amzn.to/3e85Hqr

[@cuentafake5638]

Muchas gracias, aunque rompí el indicador de velocidad me ahorré el tener que comprar otra vez los mandos gracias a tu video

[@kirillusmanov6780]

Единственное видео которое мне помогло так как немог найти видео с такими же моноблоками как у меня

[@stasart4034]

А что у вас было? У меня переключатель, при настройке переднего, шифер то-ли заело на вторую переключается, и назад ручка не возвращается, а на третий вообще не дотягивает, велик новый.

[@ravidm92]

Big thanks to you man !!!

[@JoeyMesa]

You're welcome!

[@pablocostantini3038]

I have, just by accident, disassembled the front shifter; when I have decided to take it to a byke shop to have it assembled I found this video and it allowed me to do it myself. Thank you very much!! Pablo

[@brrrrrrr604]

I thank you so much for this

[@JoeyMesa]

You're welcome! Thanks for taking the time to comment!

[@eletronicapmm2316]

Sou do Brasil agradeço por você compartilhar esse vídeo me ajudou muito, obrigado amigo.

[@Thewalrus91]

Excelent video! It help me so much :D

[@JoeyMesa]

You're welcome!

[@Joaobgchannel]

Esse vídeo me ajudou mais que inúmeros professores de nível superior. Teu lugar no céu tá mais q reservado

[@mr.tambourinemannn]

Thx you so much you help me so well, best regards, God bless you.

[@JoeyMesa]

Happy to help! Thank you for leaving a comment, I appreciate it!

[@albisteffen5085]

Hi Joey, do you have a video for the same model shifter BUT the left hand side?? Thank you and well done

[@kafjk]

You saved my ass, thousend thanks to you.

[@JoeyMesa]

You're very welcome!

[@TranVanHieuBDCDT]

Thank you so much. I can fix my bike now

[@JoeyMesa]

Glad I could help

[@kendrakumala8782]

Woow, uraiannya begitu jelas, detail sekali. Sampai video zoom nya juga. Mudah dimengerti, berikut penggunan tool dan benang untuk menarik per nya. Sangat membantu. Salam dari saya. Tq.

[@JoeyMesa]

Sama-sama! Terima kasih telah meluangkan waktu untuk meninggalkan umpan balik!

[@MRTASSSIE]

Than you, helped a great deal.

[@JoeyMesa]

You're welcome!

[@vinhvu7318]

Can you show a detail video of how you open the housing to take the shifer cable out? There were 2 screws but I can not pry it open. Thanks.

[@jaijangid2081]

Thanks so much

[@luispiros]

Thank you very much!

[@JoeyMesa]

You're welcome!

[@mdfrnssn7134]

Hi Joey, great video thank you so much! I still got one problem after following all the steps. the shifters is only going lower. once i got to shift 1 I cant go up? Do you know what possibly could be the issue?

[@shantanukapdegamingtecz2398]

Thank's bro

[@jz8614]

Muito obrigado por compartilhar! Me ajudou a economizar algumas horas. Ganhou um inscrito!

[@JoeyMesa]

De nada! Obrigado por deixar um comentário e se inscrever!

[@endernosabenada]

Hi Joey! Can you post a video assembly the left shifter?

[@andreasloeffler9994]

Thank you so much!

[@JoeyMesa]

You're welcome!

[@guilletellaponne9478]

You are the BOSS

[@JoeyMesa]

Thanks!

[@victormendes3464]

SOU DO BRASIL , SEU VÍDEO ME AJODOU MUITO !

[@smb2267]

cara como que monta a low ?

[@lavanyav2548]

Thankyou the video use fulled

[@lemantoske]

thank you everything works fine peace

[@JoeyMesa]

You're welcome!

[@nirajapalsodkar7709]

Very useful for me

[@JoeyMesa]

That's great! Thanks for taking the time to leave a comment!

[@mpbolso11]

muchas gracias genio!!! me salvaste thanks!!!

[@JoeyMesa]

You're welcome!

[@DOUGLASKALLADIM]

Thanks so much!

[@JoeyMesa]

You're welcome!

[@user-ud7qs1bc4h]

Thank you very much 🎉

[@JoeyMesa]

You're welcome 😊

[@sheikhhusain4277]

Mr. Joey, First of all thanks a lot. Your video is very helpful specially during assembly. Actually I dismantled same shifter & got to know that two parts damaged (1. Gear Indicator needle and 2. Black spline single part which have locking projections at both end & flange at center and have to insert with conical spring), Now searching for used one so I will replace damaged parts and I am sure it will work nicely.

[@JoeyMesa]

That's great! I'm glad the video was helpful and hope you find a source for the damaged parts!

[@chidiyaudi2474]

Thank you.

[@JoeyMesa]

You're welcome!

[@khaledmec368]

Thanks very much man

[@JoeyMesa]

Happy to help! Thanks for taking the time to leave feedback!

[@renereis9847]

Sou do Brasil, obrigado pela ajuda amigo ( thanks for the help friend)

[@JoeyMesa]

You're welcome!

[@smb2267]

cara como que monta a low ?

[@raulgomez969]

Thank u so much. Could you make a new video explaining how to reassemble the left side?

[@nassambetty]

It is pretty much the same. I just did it.

[@robotics5068]

Наконец-то нашел,куда ставится последняя пружина. Спасибо!

[@joseeduardo6943]

You sabed me of buying a new piece

[@smb2267]

hey man how you mount the low gear ?

[@jesusdavid689]

Gracias desde Colombia, me salvaste de pagar un buen dinero.

[@JoeyMesa]

De nada amigo!

[@tincoify]

HELLO, JOEY WILL YOU HAVE THE LEFT REMOTE ASSEMBLY VIDEO OR IT WOULD BE THE SAME

[@strikerminecraftYT]

+1 спасённая жизнь автором этого видео. У меня порвался тросс и застрял на последней передаче, теперь мои ноги не страдают, Благодарю! :)

[@rafaelmoraes1844]

Very Thank you man, very good, God blees you.....save my day .....tks.....sucess....bye

[@JoeyMesa]

You're welcome! Thanks for the feedback, I appreciate it!

[@MohanLal-ce2sw]

Thanks this video helpes i too much

[@JoeyMesa]

You're welcome~

[@andresgutierrez2347]

thank you so much

[@JoeyMesa]

You're welcome!

[@loicpennamen3627]

That saved my day ;)

[@JoeyMesa]

Cool! I'm glad the video was helpful and thanks for leaving feedback!

[@sanjayjat6794]

Thanks

[@JoeyMesa]

You're welcome!

[@mubashirnazir5628]

It's a great video...... but pls show me steps for left shifter- 03 geared one ...I am not able to fix it...don't know which way to keep springs..

[@mcelzz]

Hi Joe thank you for publish! One question what is best way for clean? Is WD40 or water and detergent?

[@51artvn74]

Fire.

[@redwolf7929]

I put mine back together but it won't index properly ,the little red pointer goes too far on one end and not far enough on the other.any ideas why?

[@senorpepper1]

Is there a way of taking the play out of the up shifter for the front derailleur? Everything works fine but would be nice if it could engage straight away..

[@JoeyMesa]

Front derailleurs never shift as well as rear derailleurs by comparison. Try to add a little more cable tension by turning the adjusting barrel on the shifter counter clockwise a turn or so an see if that helps the shifting speed. If it rubs while in gear, you went too far.

[@mfhnpc580]

Thanks bud

[@JoeyMesa]

You bet

[@spanner7339]

It's always easy when you have the know how, Joey, you just gave us the know how. I'd love to see a robot with AI attempt this from the bag of mixed parts. Then again, we are not so smart either as we are continuing to trash the world we live in. Too many people on the planet. I digress, we need the know how here also more than ever. Thanks

[@JoeyMesa]

You're welcome! Thanks for your kind words and feedback, I appreciate it!

[@llean1172]

I assembled one of this last week before watching this video. I end up finishing and testing it. It works. The only problem is there is a coil spring and a washer left outside. Now i know where those goes. I still wonder how it works without those pieces.

[@grindupBaker]

Probably the lever's got a little slop but still works.

[@mattbartlett1586]

Hey Joey. Any ideal why I can’t get to the 5,6 & 7th hear after reassembly. Every other gear works fine. Thanks👍

[@JoeyMesa]

Sounds like something is not assembled correctly or something is broken. Is there slack in the cable when you are in the 1st gear position? If so, your cable needs to be tensioned.

[@mattbartlett1586]

Joey Mesa Yeah mate, turns out some ratchets were sheered off on the ratcheting end. A shame really but seriously appreciate your help.

[@sylviahernandez8279]

Do you happen to know how to put an st ef20 back together? I thought I needed to take it apart but alas I just needed some wd40 :/

[@skyler9988]

I need info on the front shifter.

[@mrkavilin5292]

Спасибо вы мне очень помогли

[@stasart4034]

А у вас что было, мож вы мне тоже поможете

[@mrkavilin5292]

@@stasart4034 Приехал переключатель, а инструкции к сборке не было

[@stasart4034]

@@mrkavilin5292 у меня монетка переключается на 2 и назад не возвращается, а на 3 вообще не дотягивает, это можно исправить, вел новый, я просто трос натянул и она туго шла и я пытался включить 2 и что то случилось мож сломал?

[@AHRehman]

Thank you. It was very helpful. I disassembled to remove inner cable broken piece. After assembling it is not shifting from 5 to 7. I have reassembled 4 to 5 times now and every time shifting downward 7 to 1 works fine, but shifting 1 to 7 either stops at 2 or 5 or 6. Currently, it is shifting from 1 to 5 smooth, 6 also shifts but 7th lever keeps on moving with no shift. What could be the possible issue?

[@nicobellic2465]

adjust the wire at the deralium there are 2 screws there.

[@12345harv12345]

are you moving your pedals or trying to shift while your bike is idle? Mine shifts only together with left shifter. 1st left - 1,2,3 right; 2d left - 4,5 right; 3d left - 6,7 right.

[@fiddlyphuk6414]

You might have the little nut under the finishing piece snugged too tight. Try loosening it up a tad and see what happens.

[@geetasingh12345]

My 3speed gear shifter is not response I assembly it