Hi Mark glad to see you came back, we missed you! As the owner of this Seiko i can say that i bought it in september 2003 and has never been serviced until october 2015 by Mark. According to the serial, it have been produced on july 2002; Yes it would have been cheaper to buy another one, but i couldn't resign myself to send a mechanical watch to the bin, only because of old oil. not very green friendly. I discovered the Watch Repair Channell a few years ago now, and i was very impressed with his work, and those quality (sound & pictures) movies. i know he was the right guy. I still wear the watch today... Long life to this channel. sorry for my poor english.

I took my SKX007 in for service today! 3 years new and running fast. Estimate 95 dollars. One year guarantee. I only hope my guy knows his stuff. Like this dude

I really admire the patience and precision you have to perform that job. Amazing.

Great video! I just bought myself the Seiko SKX173 with the 7S26 movement. I love watching your repairs, they are the best ones on the internet because their in HD & you describe clearly what you do. I have greater appreciation now for the complexity of my watch. Can't wait till part 3 of 3!

Wow, I never thought there are so many parts

I didn't know 7s26 series has center wheel jewel. I have a couple seiko's with these movements. 10 years no complaints yet. Very good video.

I'm a mechanical engineer with a keen interest in watches and clocks. I have yet to strip and rebuild one. It just frightens me that id not get it back together with enough precision so it worked. That said i have a few 7s26s around so youve inspired me.

Thank you for the hundredth time for your time and effort in producing these videos! They are a wonderful source of knowledge and information! I'm glad you are back!

Amazing! Guys like you are a real credit to the information age. Thank you! (I think I'll watch something lighter now, like brain surgery or something... lol!)

This video is so calming and relaxing. Like watching Bob Ross.

Amazing. Barely getting into fine watches and informing myself. Thank you for this vid!

Your so lucky my man. Really wish I had the skill and know how that you do with watches. Simply amazing and another thumbs up from me. Thank you for the triple AAA videos.

Is it weird to love these videos even if you never really work on watches. I watch them to have a better understanding of the used market, and to see how they work. Just grabbed a Philippines one to tear down.

Fascinating and addictive viewing .. thank you for taking the time to make these !

Amazing how much ingenuity goes into a single mechanical wrist watch, even if it's not a $10k piece. Love Siekos.

Finally, some new repair shows. Thanks.

This popped up as a suggested video. I had so much anxiety watching this because I know I would never be able to put it back together 😂

Thank you for showing us in such detail. Amazing work.

great return Mark. thanks for this video and can't wait for the next :)

Thank you very much. I really needed this video for when i was reassembling my nh36 movement.

Hi Mark Thanks for taking the time to produce these Videos. It's great to watch an expert service these watches. Willy

YES! thanks for new videos!

You do an outstanding job with your videos and the information is excellent. Thanks for sharing your expertise with the rest of the world. You are first class.

so glad waited for this 7s26 videos Cant wait for the next one. will know the ins and outs of my Seiko dive watches

GREAT video... I always thought this 7S26 movement was "Bombproof" I know my Seiko 5 Automatic has not been an ounce of trouble and has never been serviced.

i just started watching and already like it. i love your videos

Excellent - welcome back!

Thank you Mark. Great video! I'm looking forward to the next two.

You can buy these watches for under $100.00, if mine took a dump I think I'd replace it rather than sending it to Mark, that is unless it went to the moon and back. My take-aways from all his videos are many, but one thing I'll mention is his movement side manners. Watch carefully as he handles the screws and parts, notice how he handles everything. It's not easy to do. I always breathe (like before you would pull a trigger) before lifting stuff out to remain steady. I will never be as good as he is, and so it's stuff like that people should notice and learn. I have 97 14" X 14" ceramic tiles on the floor of my work room. I know that because I searched every square inch of every square tile looking for screws that were so small that I devised my own flashlight method of locating them. Maybe someday I'll be half as good.

cant wait for the next episode.. awesome . you have good skill

How you keep track of all those parts is amazing!!!

Thank you, I just needed to put the second hand back on my 6319, but I stayed for the great video.

Thanks for this video, as well as your previous video's! Looking forward to part 2.

Going to immediately subscribe Best videos by far in terms of content Thank you for even considering uploading this!!

PERFECTION!!!! Well Done....Fastitious Work....

wonderful series!

The ASMR is strong with this video

Fantastic videos - and awesome skills! thank you very much for sharing.

Amazing! On to part 2....

Thank you for making this video, very helpfull

Wonderful Mark. I have posted this over on the Urban Gentry watch forum on Facebook as there are many SKX lovers there.

beautiful video, now i will mod my skx

Great video! I have the same Seiko. Its a great watch. After this, i might be interested in servicing it myself 😅

Great video and great chanel

Loved watching his. So delicate 😳. Bloody brilliant job. Bravo Zulu chief 💪🏼😎

7S26 is really a workhorse :)

Thanks for this video...it's almost enough for to give it a try except I don't have a cleaning machine. I noticed you switch between steel and brass tweezers. Why is there the need to switch?

Very informative. Thanks for sharing. One question. I'm planning to replace the pawl on the first reduction wheel. Can I just remove the main plate after removing the weight? Thanks.

Great work!!!

Awesome detail thanks....

Great video!

It's amazing that all those parts fit toghether. Do you have any idea how old this watch was? Or when the last service was? Great video by the way!

Thank you for video, very very nice . Can you tell what type of oil you use for lubricating this movement ? Thank you ...

not in a month of sundays, could I do that, and expect to put it back together again, and work. respect.

Amazing! Thank you.

Good video, would it be easier to remove the mainspring if the watch had stopped or 'wound down' first?

Hundred scres, gears and accesories!! Sooo difficult!! A real scientist!

Outstanding video Mark! I love your channel. Well done sir. Question: does a poor amplitude on my timegrapher typically indicate the watch is dirty like this one? Also, do you recommend doing "preventative maintenance" versus getting a service when it actually needs it? Last comment... the cost to service the 7S26 movement would probably cost more than the watch. Cheers!

It amazes me what you actually get for your money with a Seiko 7S26. The value compared to a Rolex is amazing IMO.

great video!

What did you use to get the pinion gear off really appreciate your videos

Nice video Good Information! :)

Please make a teardown of a Seiko Grand, I'm a big fan of Seiko and I love to see how it compares to Rolex, Omega etc

Brilliant informative channel..:)

Hello. Thank for the video, I'm now trying to fix my 7S26 ! (I think I just opened a can of worm and fund a new hobby !) The two pin holding in place the dial are broken on my SNK807K2 :/ It there a way to repair it or should I fin a new dial ? Also the eccentric mass bearing shows some play and make some noise during wrist movements (Not a drama as watch is working) Thank you

Great video mark. How much would it take to service 6R15 ?

Excelente video. Acabo de abrir un Seiko 5 Sport ref. SNZ315 cal. 7s36. Voy progresando, pronto podre comprar más herramientas y hacer un trabajo profesional y completo. Saludos 🇲🇽♥️⌚

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Hi Mark, what size cross-head screwdriver did you need at the 2:20 mark for the calendar plate?

Hi will the 7s26 get damage if u turn the hands counter clockwise when setting time?

This is not only a professional work, this is an art! Even so, i figure you resort to your own videos once on a while to check a certain position of a part, or even were it went! Maybe you don't, i know i would need to :)

please answer me, in automatic much better caliber movement or miyota movement?

Do you know where the extra two jewels are in the 7S36? I probably would had gone ahead and replaced the mainspring barrel.

What is that white plastic turning gear head called? The one on the dial mechanisms? I broke two gears off it and I need to replace it for my Seiko Monster S7s26

what screwdriver size is suitable for removing the rotor screw? I tried all screwdrivers I have and just managed to scratch it only :'(

Very interesting, more plastic parts than I imagined

I own one of these watches that I haven't worn for over 20 years. Recently found it. Kept in my pocket for a few minutes, and it started right up. However, it has always run fast, over a minute a day. How much should I be paying to have it regulated, and any idea of where this can be done. Thanks

I have a problem with my barely 2 months old Seiko with 7s26C movement. The watch is working fine, its -40 seconds/day since the day Ive bought it so I have to bring it to the watch maker to adjust it, but, not a big deal for me. The real problem actually comes with the ratchet wheel. I have noticed a few crescent or half circle or arc like shaped dirt on it, probably made of oil so I am windering where did that came from and can it actually damage the watch? Its brand new and its kinda weird to see oil build ups on top of the ratchet wheel, the rest of the mechanism looks clean. Any thoughts?

Hello. What mainspring winder Bergeon did you use?

Thank you for another superb watch service video. I have a SNK789, so it's fun watching, what's inside of another Seiko 5 Love from Scotland 5* :D

What did you use to film these videos? So close up and clear.

What size screwdriver is used on the date wheel, he removes 4 in total, three flast then one tiny philips. What size is that philips screwdriver?

Can I follow this to Service the 7S36 Movement? As I believe there’s not much difference between the two..?? Thanks

great job thank u

Perfect clock!

What size screwdriver did you use to remove the crosshead on the 7s26?

Hi Mark, I live in SINGAPORE. What sort of charge for cleaning and servicing? Best regards Andrew

I HAVE AN 7S 26 not divers does the osolating wheel turn through 360 as mine is binding at some point carn,t seem to figure it out after clean & lube still does it

You don’t mention the tool used or the name of the part on the under side , some sort of grabber that frees the rotor on the other side? ... I’m stuck at the part as I cannot get the part to slide off , and don’t seem to have an apparatus to do so ...pleas e advise ..thanks

How do you organise/remember all of the parts Sir?

I have a first generation Seiko Monster with the 7s26 movement and I wish to upgrade the movement to something with hacking and hand winding capabilities. How could I go about doing this? I’ve heard of people fitting a 6r15 in the case without problems. If I could get a 4r36 or 6r15 in it could I use a second gen stem and crown? How would you go about this? Thank you!

5:40. I accidentally took out the wire from that part (not sure what's its called) when my Seiko skx stopped working suddenly. I thought I want to regulate the +/- movement but I am not a genius. You know how can I replace that coiled wire from that part? Or its best to just buy a new movement? if yes, where can I buy it? Sorry brother for this long comment. Appreciate if you can help me.

How did you get the seconds hand to stop ticking?

I am interested in going into the watch repair business. Been buying broken watches and repairing them as a hobby for awhile. Im thinking its about time to make it into a part time. Any advice getting started? Btw im in texas.

Is there any harm done if an automatic stops (power runs down) during a day/date change? For example, a Seiko skx, which takes 5 hours to complete the whole day/date change.

I'm really enjoying this. I just purchased the same model watch on Ebay less than a week ago. It's running great, but who knows when it's last service was done. I wish you were in these parts. I'd bring it over to you.

can you do a video showing how to remove the bezel and the part between bezel and dial (don't know what is it called)?

what are your thoughts on this movement? For the money ? great videos!!

where are you located in have the same watch and same needed service as it is not working properly.

The tiny philips screw at 2:20 is impossible. No screwdriver exists for it. Did you modify yours ? What did you use ?