Can I Stop This STIHL 026 Chainsaw From Leaking Bar Oil? Let's Find Out!

Can I Stop This STIHL 026 Chainsaw From Leaking Bar Oil? Let's Find Out!
In this step by step video I get to the bottom of why a Stihl 026 chainsaw won't stop leaking bar oil!
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Oil tank vent valve is part number 1128 640 9100
Oil line is part number 1128 647 9400
Piston stop used in video is part number 0000 893 5903
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I do my best to teach you how to easily diagnose problems the fastest, quickest and most efficient way with real repairs beyond just replacing a spark plug. These tips are for both the homeowner and shop owner.
Whether it be a handheld, two stroke, two cycle engine like a chainsaw, weed eater, weed whacker, string trimmer, grass trimmer, line trimmer, hedge trimmer, strimmer, brush cutter, leaf blower, or four stroke, four cycle units like a lawnmower, wood splitter, lawn tractor, zero turn mower, snowblower, pressure washer, generator or a ride on mower that needs parts installed or replaced, I’m your go-to guy.
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Tengo tutoriales paso a paso fáciles de seguir y completos, videos de "hágalo usted mismo" (DIY) para ayudarlo con su equipo de jardín y césped roto, incluidos quitanieves y cortadoras de giro cero.
Hago todo lo posible para enseñarle cómo diagnosticar fácilmente problemas de la manera más rápida, rápida y eficiente con reparaciones reales más allá de simplemente reemplazar una bujía. Estos consejos son tanto para el dueño de la casa como para el dueño de la tienda.
Ya sea un motor manual de dos tiempos y dos ciclos como una motosierra, un desmalezador, un desmalezador, una cortadora de hilo, una cortadora de césped, una cortadora de hilo, una cortadora de setos, una podadora, una desbrozadora, un soplador de hojas o unidades de cuatro tiempos y cuatro ciclos como una cortadora de césped, una cortadora de leña, un tractor cortacésped, una cortadora de césped de giro cero, una sopladora de nieve, una lavadora a presión, un generador o una cortadora de césped que necesita que se instalen o reemplacen piezas, soy su persona indicada.
He sido mecánico de motores pequeños durante muchas décadas y también dirijo mi propio taller de reparación, por lo que mis videos están repletos de consejos y trucos que he aprendido y quiero compartir con ustedes. También encontrará muchas revisiones de herramientas y productos de las mejores marcas en mi canal.
#donyboy73 #howto #stihl

[@donyboy73]

Check out my new DIY channel and make sure to subscribe! kzbin.info/door/GYVUM2XEm20OQkC6XuFTdw

[@gregoryrogers6100]

Thanks

[@henerker]

Aah…I see that overfilling even happens to professionals. I thought I was the only one that often overfills my saw’s oil reservoir. So easy to do. 😊

[@ChrisR]

For anyone who might be wondering about the tank vent/valve - I cut one apart a month or two ago. Inside is a spring and a ball. The ball is directly behind the hole and the spring presses the ball against the hole. Using air and/or solvent to try and clean the area where the ball seats might fix the leak if a piece of dirt got between the ball and the seat.

[@danoelfke93]

This is exactly how all my projects go the 1st time. I end up taking everything apart 10x, but then I know exactly what I'm doing, & I can do it in my sleep now.

[@jedclampett6466]

The 026 was one of the best saws Stihl ever made. I had two of them back in the day and ran them with 24" bars.

[@johnhargis4566]

I so much agree I like the balance of the 026 better than any saw lve ever ran .

[@dominikwojtas2550]

Yes I do agree with you fella!! Greetings from Poland 😉

[@BOXTERS32]

I still run an 026 as my go to saw, mine has the heated handle too quite rare for this option to be on this saw

[@brandonlee8467]

I have an 026 also love her

[@MrBearbait75]

Very detailed explanation of what to look for and do to fix a leaky saw! Better than ANY other video. They don't show all the steps. They may tell you about them but don't show it. Awesome thanks to you Mr Donny!

[@JCcanU]

Great Video Don , my 1992 026 has cut 25 cord for most of its life I Got a New saw for felling use the 026 for light duty , I have replaced 2 air filters 1 oil cap 1 fuel cap and 1 oiler lines 1 fuel line in the last 10 years . 31 year old saw and it still runs great just used it last week tornado went through my area and two tree limbs come down in my yard .

[@donyboy73]

Great saws!

[@kenk3102]

....I recently restored an old Stihl 026 given to me by a friend who gave up on trying to get it to run again after many years of sitting on the shelf.... I love the saw....it's a real screamer and cuts like a dream....this DIY video is gonna come in handy in the future...thanks for posting Don!.... 🙂

[@scottfirman]

I do the same thing you do concerning ordering parts. I tend to order two of something so I have another, especially on items I know I will run across. Nothing makes a customer happier than saying" I already have that part in stock." Not that I keep a big inventory because I do not. I run across these saws on occasion and love how reliable they are. I have run across the leaking vent issue before and generally most guys refuse to get it fixed or just live with the slight leak. An awesome video this time. I really enjoy your videos.

[@es5ape]

I had the same problem with the same saw, I tried aftermarket cap as it was 5 times cheaper than OEM and it broke once I tried to screw it. So I replaced the o-ring from the old cap with the o-ring from the new cap and it's working for few years already. No need to change the cap as the OEM is the best. Just need to change the o-ring.

[@bobmacrae8395]

I just bought a new OEM o ring for my 028 WB. Worked perfect and cheap.

[@misskaite7045]

I've been putting cardboard under my 026 for way too long. I tried troubleshooting it in the past, but I couldn't find decent instructions - until now. I replaced the intake hose yesterday, and no oil leaks today. Great step-by-step explanation!

[@pauljeurissen2752]

Thanks for your professional education.... I used to bring my 260 anually to the dealer for maintenance and repair of the oil problems. I paid €65,- each time and still had oil issues. Today I took it apart myself: The complete inner side area around the clutch has never been cleaned. Old saw dust mixed with oil residue turned into a layer of dough, hard as concrete, covering the entire inside. Not able to clean it with compressed air nor brake cleaner. I'm soaking it with NATO gun oil and now it's weakening and I can peel it off carefully with a small screwdriver.... Took me almost 8 hours, repaired it as shown in the video and now I have a good running chainsaw thanks to you.

[@donyboy73]

That cleaning should have been done by the servicing shop!

[@pauljeurissen2752]

​@@donyboy73 Thanks to you I am able to do it myself and save money also....

[@donyboy73]

Watch next; How to replace the oil line on a STIHL MS170 180; kzbin.info/www/bejne/h5rciYCOgr2dkKc

[@olakari5805]

You are so good to explain , in detail , thank you 😊

[@100vg]

Always so professional with every step covered. Great one, Don!

[@garyalensr]

Another fantastic informational video, Thank you Dony for sharing your knowledge with us. You good Sir are an excellent small engine teacher!!!!

[@ghettsumm7949]

You stated that you are using winter chain oil for your leak test, which I assume is thinner than summer oil. What is the ambient temperature in your shop? Maybe that is the reason it's seeping thru. I know when I'm out of chain oil, I will use 30 WT. motor oil as a temporary substitute and it will leak like crazy. Good info Donyboy.

[@gregorymacneil2836]

I have an 026 with the new style "flip up" cap that used to leak like a sieve. I cleaned the “flip up” cap liberally with brake cleaner and wiped if off with a clean rag - it has been about 3 years since it last leaked a single drop. I would recommend cleaning the "flip up" cap before replacing it. My Dewalt battery powered saw used to spill almost all its oil overnight - I tried everything including buying a new oil cap - since that saw never gets transported off the property I just store it on its side with the cap pointing up in the air - problem solved - no more overnight leaks - even when I am using it I just lay it down on its side since a single drop of biodegradable bar oil is to expensive to spill. It does not leak when in use - strange!

[@DaveBennett]

Very thorough video. Thanks!

[@bikerdad63]

Don I appreciate how detailed you are on the repairs.

[@thadstuart8544]

that was a superb demonstration. thank you

[@davidzemke2549]

11:40 I do this everytime. Thank you for making me feel better. Excellence job!

[@ASTANELAND]

I have an 026 which is not leaking oil yet. Thanks for a great video and now I know how to stop the oil leak if it does occur.

[@markproulx1472]

Sensational video! Thanks for covering all the steps so thoroughly.

[@annierenard5954]

very educational, thank you

[@ronwatson4902]

Well that was quite involved but very easy to follow. You have a wonderful ability to teach. Thank you Dony and have a great weekend.

[@WOMANIZERJERRY]

Very good tutorial video, and the thing is with chain saws, they all leak oil eventually, if used regularly.

[@jonchristos8735]

thank you Dony. I inherited a 026 and have done a bit of work to get it running but have avoided the leaking oil. no longer. i have learnt a lot from your videos over the years, especially the long format. i appreciate your whole mantra about helping the people who want to be helped and taking money from the ones who would rather pay someone else to do it. thank you for sharing.

[@boblemon2103]

Oh wow nice how to, I’ve have a saw that just leaks bar oil all the time, going to take a look at that and follow your procedure.

[@snaponjohn100]

Your videos are so informative! You literally taught me how to fix my own lawnmowers and chainsaws. I still like watching them to keep my skills in tune. God bless you. John.

[@ponyiaron]

What a great video! I have the same Stihl chainsaw and this made me an expert in fixing it. A little story about how I got it: I have a relative who said that there is a chainsaw that they would like to sell. They have about 10 Stihls, but they never sell any. They are quite an alcoholic brigade, but nice guys. I was quite sure that they really mean that it is good, but I knew nothing about chainsaws and this one was looking really old. One guy used it that day, and he was absolutely drunk in the evening. He could barley say a word. I asked him if the chainsaw was good, and he just smiled and said: "it is a good chainsaw". At that moment I knew that he was being honest. :)

[@rickthelian2215]

A nice repair for a common problem in Chainsaws through many steps you explained it really well😊

[@gunterbecker8528]

Excellent work and teaching 😊

[@hermitholllerhomestead2080]

Great job! I need to do the same thing on my old 036. Thanks.

[@georgebenevides]

That's Don. I enjoy the step by step during the removal and their parts. Once removed you explained the part# needed to replace the part.

[@lehibell6176]

Thanks so much for all the videos, you are a great teacher!!

[@davefitzpatrick83]

Awesome video! Thanks!

[@pwleppa]

Superinformative video. Thank you Dony!

[@daveodenbach6455]

Nice video. Good point on the vent. The gaskets for the caps are cheap from Stihl, and 90 percent of the time, it's all that is needed. The clutch drum on the adjustable oiler version will have a slot for driving a different gear on the pump. Keep up the great work!!!!

[@johnclarke6647]

I replaced the oil pickup line without dumping the bar oil in my 026 the other day. Turning the saw on its flywheel side will keep all the oil in the saw. I removed the clutch, sprocket, worm gear and oil pump. I then pulled out the old oil pickup line with a pair of needle nose pliers. Blew the filter out and put it on the new oil line. I pushed it into the hole and then took my 10 mm long nut driver and pushed it down completely into the hole. I put everything together, ranked it up and it oiled, perfectly. I have had no leaks since. I did not replace the discharge line.

[@MikeSmith-ng3rv]

Excellent job and video for the DIY guys. Thank you.

[@donaldmatthies6026]

Don, Another good video explanation. Thank you for taking time to film, edit and post this video.

[@jasnijimin6329]

Thanks for experience and knowledge about Stihl chainsaw

[@TheOverproof151]

Perfect.... my 026 Arctic has a leak... now I can fix it. Thanks!!

[@dlkline27]

Great video. Lots to learn here. I have a 30 year old 026 so I'll be saving this video. Thanks!

[@Mechanicturfgear]

I’ve overfilled the oiler so many times and I know better It fills up fast near the top I find . Another great video.👍

[@donyboy73]

So easy to do!

[@74stevedc]

I have one of those in my collection. It does leak, haven't looked into it but will. Thanks for sharing.

[@rudyk5524]

Outstanding video! Extremely detailed. Thanks for taking the time to show each step and exactly what to do along with all the parts. Great job. Thanks!

[@steveriggenbach90]

A lot of great information. My saw retains pressure unless I rake cap off/on. I’ll check the vent. Thanks and take care.

[@scottmclagan4276]

Great vid Don. Thanks. I did the same job on my 20+ year old Husq 371 XP. It's interesting how the two share the same design ideas. Like you, I went with OEM parts. No leaks!

[@banjo8537]

That little vent valve was a bonus reveal Don. MuTx!

[@KC_justme]

Excellent video! Complete overview of leak repair/parts replacement on a bar oiler mechanism for this model Stihl. Thanks Don!

[@marknye51.thefixitguy]

Great Instruction Video as always Dony.

[@PatHiggins-Mayo]

Great video. I recently replaced my oil line on my Ms171 and it cured the leak. It was slightly easier to replace than the one you tackled 😉

[@puffyd58]

Thanks so much for such a thorough, detailed video. My MS290 is leaking . . .actually, it's leaking more since I got a new Stihl oil cap. Now I know some other things that could be part of the problem. Nice job!

[@markwray3905]

Learned a lot from this one 😊

[@philippevoordecker6956]

the 026 is one verry good saw. I am using it from 30 years, it is stil clean ! and work fine. Thanks for your video.

[@thoughtfulkayaker8065]

Thanks Very helpful. I have an 036PRO, same saw slightly larger. Tips on oil pump suction and vent are very helpful.

[@gunterbecker8528]

Well explained sir,thank you!

[@tomfillmore9710]

Great video buddy thanks for sharing very helpful have a great day

[@Kirk-cf1vj]

Great video, Real helpful. Thanks

[@gavmansworkshop5624]

I actually had to pause just to agree on those older fuel caps being better. Way over from Australia mate 👍

[@lyndelllyon754]

Thanks for the heads up on this I'm going to need to replace mine as well

[@josedejesus6185]

Great instructional video! Love to watch your videos! You guide us in a very simple and understanding way! You should be a professor! Keep them coming!

[@snaponjohn100]

Thank you so much for posting this video, Dohn! My friend asked me to look into his leaky saw. His saw is 30 years old. Your photography was excellent. I stopped it and did screen captures at every stage and saved them to my photos. I will have a great permanent record of the entire procedure. Thank you so much. It is also really rewarding to see that you have been so successful that you have upgraded your tools to Snap-on Tools! They are a joy to work with. Have a blessed new year. John.

[@user-ko4ls7oq1u]

Donny Boy fix it videos ae always well explained and recorded in detail. Whenever I need info I look for his direction.

[@philliphall5198]

Thank you for information and advice

[@andrewsteele7663]

Thanks Don, I have watched your tutorial and I will investigate the leaks I have tomorrow, Cheers

[@donvoll2580]

Good day Don Interesting. I am glad I am not the only one who over fills Interesting seeing inside of bar lines. Thanks

[@Drottninggatan2017]

I actually like how they made that valve. It looks to be a good idea. I'm used to the old Jonsered, and they simply have a small cotter pin. It works really well but it will leak some.

[@jeschreindl]

That’s what my Jonsered 49sp uses too

[@skipproctor8979]

Interesting blowing air on the little valve could be the culprit? Other 2 fixes I was aware of. Another great tip!

[@b.ellison396]

Thank you Don! I have a MS250 that leaks from the right side, and I am suspecting that vent check valve. Perfect timing! Update: The check valve replacement fixed it. You're a genius Don! Keep posting.

[@donyboy73]

Often the oil line needs replacing

[@soil-aint-dirt4903]

Great video…thanks for taking the time and for sharing!

[@michedmck]

Great work, Don! Thanks for sharing!

[@ryanbruner8928]

I also like the old style cap as well, I've has 2 year old saws that had the flip caps fail.

[@robertdavis6708]

Great video Donny. My Stihls usually leak sitting around if I leave bar oil in them. I've just got in to the habit of pouring the unused oil back into the container after cutting. That is if I'm through for a few days. Same as fuel, as the alcohol destroys the lines . Thanks again.

[@kellyspann9845]

I do have the exact same 026 saw that I bought new thirty years ago and it still runs great. Mine leaks a little oil but I always drain the gas and the bar oil out after I'm finished using it for the day so it leaves very little oil residue. I always hand tighten my gas and oil caps and never use the screw driver just for that reason to not break them. Great video and Thanks for making it. This is the best video I have found for this saw. Thank you for the part numbers also. I may make these repairs pretty soon.

[@thomashillman3801]

Best video I've found for my 026 chain saw. Keep up with more and ty 😊

[@Earthling418]

Dad had up to seven Stihl chainsaws in the early seventies and worked part time at a saw shop in Indy in later years. I am a big Stihl fan but not a two cycle user at this time. I have four of the consumer battery devices and the quality, durability and performance of all of them has not dissapointed me. Keep Kicking!

[@Steve-qg1mo]

Awesome video Don. You, sir, are truly dedicated to your craft.

[@JWLamey]

Wow - I admire your perseverance to solve this problem. I am enjoying your videos and learn something every time I watch one.

[@pauloost59]

Thank u very much!... I have my trusty old 026 and am about to have some big maintenance done to it. And one of the reasons is the leaking. So I'm gonna make the tech watch your video, and now I have the part numbers. So they can't f-it up... Love my saw, it was a gift from my manager at an early internship and had it do really good work for over 20 years...

[@trumpzilla4193]

So many extra learnings besides the main theme....Rock On!

[@8xlaxx]

Love your videos,...Simple & concise. Thank you for sharing your knowledge!

[@jacobs4545]

Anything but lol I had to watch on 2x speed😂

[@greygum7]

Great video.Exactly what I needed.

[@crustydownunder]

Great video, mate. And well explained. It helps me a lot. Thanks

[@andymarshaevans]

I have an 025 that leaked oil at the cap and the rubber line going into the tank. Replaced the oil line and O ring on the nylon fitting. Then saw that the cap leaked too. Same cap as your 026. I removed the flat gasket and used an Oring. Last I looked it wasn't leaking. I did cut out an oversized flat gasket from an old bicycle tire tube. If the Oring doesn't work out, I'll try the tire tube gasket. Great videos, Dony. Very professional and no BS. Good closeups

[@user-bp5yd3nt4i]

Excellent!!!! Thank you. AWESOME VIDEO!!!

[@williamwilliams7706]

Good knowledge to have, thanks.

[@libsrdum]

So much knowledge here. Thank you very much.

[@Breakrite]

Great detail video and explanation. I really like that you left the accidental overfill in. Realistic maintenance. Subscribed.

[@ernieengineer3462]

Great Video. Perfect amount of explanation and follow through with part numbers, etc. Thanks so much for taking the time to share your expertise. You’re a pro! BTW, you’re the first channel I’ve contributed to. Either I’m really cheap or your video was top notch.

[@emanuelguyon7418]

Very informative, thank you very much

[@squirlnutsbigsack4864]

Thank you my 020t leaks while sitting. After a quick diagnosis im off to my stihl dealership for parts!!

[@sandybrown8115]

Awesome Video. I have an o26 still chainsaw.. I appreciate the video

[@blackenedmagic888]

Good video, Dony! Although other chainsaws may use different oiler setups, the basic system is similar across most makes and models, so this would be a pretty good video as a reference tool - at least for learning what to check when your saw is leaking.

[@drmikeyb1]

Fantastic video for someone learning the trade, i have basically set my whole diagnostic set up and just about everything ive learned from thus channel and the geasy shop rag. Scott also has a fantastic channel and explains things in detail such as you do. Thank you for your help and time brother. Take care

[@Jamwcjconn]

Great video Donyboy 👍👍

[@jamesdesylva9723]

good job nan. Thanks

[@robertmailhos8159]

I like the old school Caps on the gas tank and the oil tank instead of the flip up Caps on chain saw s