How to Replace the Bar & Chain Oil Pump Worm Gear on a Stihl MS 029 Chainsaw

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**Always follow the instructions in your repair manual when doing repair or maintenance work on Outdoor Power Equipment. Manuals can be found at the manufacturers website.**
This video is about replacing the oil pump worm gear on a Stihl MS 029 Chainsaw. The worm gear is indirectly connected to the clutch hub using a metal arm attached to the worm gear. When the clutch is engaged and the clutch hub turns it will turn the worm gear and operate the oil pump. The oil pump pumps bar and chain oil from the oil tank to the bar and chain, thus lubricating the bar and chain. If the oil pump is not working correctly than the bar and chain will not be lubricated properly.
The oil pump is located behind the clutch, and removal of the clutch is required to get to the oil pump and worm gear.
Stihl Multipurpose Grease - Part # 0781 120 1109
Thanks for Watching!

[@patrickmcmurray9446]

This is a professional quality vid. Clear picture, clear voice, organized and methodical. Thank you! I am subscribed.

[@smallengineshop]

Thanks

[@Adam-xs3ng]

Has to be one of the best tutorial videos I have seen on KZbin. Great explanations and attention to detail on all the little tips that save you causing unnecessary damage whilst repairing a saw. Even gave the torque settings. Excellent work.

[@davidcat436]

Excellent video! Just enough, but not too much, and with sufficient attention to all the necessary details. Thanks!

[@6900pilot]

Excellent video it is the best one I've seen on KZbin, very detailed thank you.

[@magicone9327]

Good job explaining to be sure the piston is up enough to cover the ports. I followed other vid that did not explain that aspect and it caught my rope and cut it off. Fortunately I was able to pull the muffler and got the chunk.

[@johnbalasa711]

Thanks very professionally done, close up is great.

[@bpccDCin2020]

Damn, dude! This is one of the best (if not THE best!) how-to videos I've ever seen. Either you had a camera guy with you or you spent a hell of a long time setting up the shots. Excellent explanation of the procedure and cautions to observe. You are a KZbin GOD!!!

[@patrickmertz2426]

The rope idea is clever, every day we learn something new.

[@jamesward7511]

I really appreciate the video, you covered all aspects from start to finish. Great job.

[@henryalvares7672]

very good, I don't know how you have that much patience to explain every little detail, thank you very much. I just bought a very abused 029 .

[@6rowlettes]

Excellent video. This is the first video that I've watched that gave a torque setting for the clutch. Thanks for all the details.

[@davidbollinger1800]

Great and very informative video, well explained.

[@jacobs.3952]

Well that seems easy enough. Great video man

[@joeking7731]

Great Guide - thanks. I stupidly ran my Stihl MS 181 without any chain oil for about 15 minutes. I then filled it with oil, but now its leaking oil out of the bottom of the saw. Could this be the oil pump in your opinion? Thank you

[@m.s.t.c6315]

I appreciate you taking the time to show all of us about the worm gear & how to replace it. I have another questions: If the worm gear is still in good shape & you have more oil inside the casing then on the chain is the oil pump bad? Or any recommendations?

[@SDMarineConsulting]

Outstanding video, clear and easy to follow, well done.

[@floydrturbo1]

Excellent instructional video. Great job, video-very good, audio-very good, subject matter-excellent. wish they were all this well done.

[@smallengineshop]

Thanks!

[@davidsutter8174]

Excellent video! Thank you for sharing this with all of us.

[@mikebailey1635]

Well done. Thanks for the great guide.

[@TheDisorderly1]

Why did the worm gear wear? Was the pump clogged or is this a normal wear item that just needs replaced after awhile?

[@dennisjj6529]

Absolutely great video. Thanks for your clear instructions and explanation.

[@smallengineshop]

+Dennis JJ Thanks for Watching!

[@justinreno8116]

Helped me fix my beach firewood getter! Thanks a lot!! Cheers!!

[@mikec7373]

Great video! Ihave same saw. When I tighten the clutch back on spindle it is really tight against the worm gear. It makes it so when the clutch is spinning, it is spinning the worm gear which then makes the clutch drum and chain spin. Any suggestions? I can easily remove worm gear, it’s not seized or anything.

[@insolentstickleback3266]

Thank You, this video is exactly what I was in need of, before I went exploring in my MS 029.

[@bluepine33]

My compliments on a GREAT video - well scripted and good camera shots.

[@cartyharley]

Thanks really useful - i am just overhauling my 029 Farm Boss and this was really helpful!

[@craigsharp3538]

thanks for a clear, detailed video. better than the other 2 I looked at. !

[@alexandrialemoine8901]

i think you did a very good job good video. the torque value on the clutch was great, torque values are very important once again great job

[@smallengineshop]

Alexandria Timpson Thanks for watching!

[@mitchellsteele2172]

really great video, how much of a difference between this saw and my 1980 041 farm boss? same process more or less?

[@Hipporider]

Brilliantly executed walk through. thanks.

[@zenmoto870]

great instructions, straight to the point.

[@emmetwalsh9116]

Good job thanks, explained very well

[@williammackinlay8580]

Very informative well presented really appreciate the help

[@smallengineshop]

Thanks

[@michaelredding7872]

Very much appreciated. Had a couple of questions to myself as I disassembled the unit, and you answered them in the video.. Thank you.

[@magicone9327]

Did you check the helix gear on the pump itself?

[@MILKMAN5643]

Is your worm gear supposed to press in or screw in? I have an 039 and it screws in counter clockwise and I'm just wondering if that's supposed to happen

[@94SexyStang]

just press in, and it goes in.

[@jsimpson8018]

Excellent video. Is it safe to assume that this procedure is typical across Stihl m models? For the most part?

[@martinwalkowe9298]

Thank you for taking the time to shoot this video. Great video footage and narration.

[@boyddickson1751]

Very informative, thank you!

[@kurtsligh500]

Great video...can I use regular high temp tractor grease for the bearing? And one more question, should I go ahead and replace the oil pump while I'm in there or is that a whole nuther animal.

[@frankmurray9172]

Great video, but can you help? I'm at the stage where I have taken out the worm gear ( StihlMS361c) There doesn't appear to be any problem with the worm gear, but I don't understand how it works. You say the worm arm picks up the drive from the clutch, but I don't see how it does it. There is a smooth plate behind the clutch and I can't see anything for the end of the worm arm to engage in? I bought the chainsaw second hand recently. Thanks

[@frankmurray9172]

I'm answering my own question ! I found a notch on the clutch cover the worm gear arm engages in. I took the pump out and it is pumping OK when the cog is turned. The oil supply to the bar gallery is OK that leaves only the supply from the oil resevoir. A friend has my air compressor, but when I get it back I will try some compressed air through the pipe. Its got me thinking there is nothing wrong. I have heard that this model (Stihl ms361c) does not produce much oil anyway. There is an adjustment underneath to increase oil supply Another question; There is a spring steel circle of metal that runs round the inside circumference of the clutch housing about 3/8ths inch wide, what is its purpose ? It looks like it might be difficult to get the clutch cover back because of it.

[@thrillex3224]

Saved me 300 dollars thanks a lot

[@smallengineshop]

+Thrillex Thanks for Watching!

[@pharaohlandscaping]

Thank you now I can go change both on my ms290 and ms391

[@smallengineshop]

Thanks for watching!

[@frankmurray9172]

I can't find any problem with the oiling. I think I will just turn the adjuster underneath up to maximum oiling. I am reassembling but have hit a problem; the clutch housing won't sit down flat due to the circular sprung steel I mentioned in previous post. I can't get it to sit down sufficient to get the circlip on. I can see that you have to line up the worm gear arm. Have you any suggestions ? Thanks

[@volkanbekdas]

Excellent saw

[@martinkesler5999]

will this method work with the MS310 also?

[@DyslexicLunatic]

Very well done. Thank you.

[@mikegarber4298]

Excellent! Great Instructions!

[@smallengineshop]

+Dennis Garber Thanks for Watching!

[@KyleCarrington]

How much more is involved to change the pump as well?

[@ljt190]

So, pulled the worm gear, and it looks fine, threads intact. Could the problem be the oil pump itself? Is that worth fixing? Thanks!

[@donwalker798]

Thanks, you illustrated that soooo good.

[@smallengineshop]

Thanks

[@lpainter100]

Good video. Same process for 088?

[@boosnag]

Very helpful, nice and very clear tutorial. You da man.

[@smallengineshop]

Thanks

[@danielpadgett2831]

Just wondering why you need to reposition the piston again it's already where it needs to be the first time when you remove the clutch the crank shaft doesn't move

[@mikehenry4743]

Great, I need to replace it on my 066 and this will help.

[@alanjackson976]

I have watched this Video ,4 times now , and when you reassemble the clutch , there does not appear to be a Pressed Metal washer with top marked on it shown any where. I took mine apart as you did , BUT -- but for the life of me I can not seem to remember which way it goes back . All the rest of the procedures, i have done , but it will not go back into place,. Please any tips will be helpful , thanks.. Jacko in Australia.

[@les4lifepaul]

No. The chain brake consists of a steel band that wraps around the drum/sprocket. The drum/sprocket has to be removed in order to access the clutch for removal. You can do the rope in the spark plug hole just remember the connecting rod will bend if you crank on it too hard. The impact wrench he used in the beginning to remove the bar nuts would be ideal for removing the clutch, that way you wont have to worry about messing up the engine or locking the chain.

[@toddknoll402]

great video! thanks for taking the time to film!

[@DirftKing5]

Can some thing else be use as chain instead of the bars chain oil?

[@sowder23]

can you set the oiler to put out more oil in the older 029

[@hddm3]

thank you again for another great video.

[@sticko1970]

Great video easy to understand.Thanks.

[@snowcatxx7117]

Very educational video

[@scottwade4702]

Great video 👍😎👍👌

[@michaeltucker2250]

great video, got the same problem on my husky 45 so im hoping its the same procedure, rgds mike from Scotland,

[@王老哥-f3e]

very nice work

[@smallengineshop]

+王老哥 Thanks for watching!

[@fomoco1454]

Great video, very well done.

[@smallengineshop]

Thanks

[@robertahmmo2013]

I got a bar oil leak somewhere coming from my Stihl MS18. I can't find any videos for that. Any places u know of I can check

[@smallengineshop]

+Robert Ahmmo Repair manual

[@johnclarke6647]

Removing the clutch- I just take my impact driver and spin the clutch off to the right and do not need to block the piston. I also install it the same way. It is a good idea to clean the clutch and sprocket with break cleaner when you have them off, as well as greasing the sprocket bearing. I use hi temp wheel bearing grease for it and the worm gear. I also like to clean the input and output oil lines as the same time. They can get blocked with sawdust debris from time to time.

[@truesician]

thanks very much, that's very clear

[@delawareteacher1182]

Awesome video, thank you!

[@johnclarke6647]

What happened to your worm gear cover plate. If you put the clutch on without the cover plate, the clutch will chew down the worm gear into nothing. That is the voice of experience, because my 029 ate off the top of the warm gear all the way down to the metal arm. The cover plate has a recess in it to allow it to fit on top of the worm gear it also has the word TOP on the side that faces outward, so you do not put it on wrong. Most folks do not torque the clutch beyond hand tight because it will tighten as you run the saw. I take mine off with my 20 volt impact wrench.

[@DMMeier66]

super helpful. thank you

[@DrunkenNuts]

my 034 av super has a chain break. can i just use that to hold the clutch?

[@johnmorris1637]

Where is the washer that goes in before the clutch.

[@94SexyStang]

yep, there is a Large washer missing

[@micdal22]

Excellent video. 10/10. Thanks. I have a Stihl 009 that's not pumping oil, so I'll check the worm gear and maybe fix the problem?

[@hetchiballi]

Good video. Thanks.

[@smallengineshop]

hetchiballi Thanks for watching!

[@michaelpukmel9175]

Thanks for the video!

[@DerricksonJ]

nice video, good job explaining

[@jwaid7581]

very good video

[@smallengineshop]

Thanks

[@harryhazza3]

great guide. thank you

[@smallengineshop]

Thanks for watching!

[@georgeream3606]

Good job. Thanks!

[@Moluaa]

Great video tutorial. Just 1 question is the rope really necessary. would leaving the screw driver in do the trick?

[@atomhartmother]

How about showing us a good way to get a stuck drum off. I don't want to get to rough with the saw.

[@geojor]

what is wrong when the chain tightner on a 290 Stihl chainsaw when the tightner tightens out before the chain is tight? thanks...

[@smallengineshop]

The tightener might not be making proper contact with the bar, so as the tightener moves it isn't moving the bar.

[@geojor]

*****...no, tightner is moving...

[@smallengineshop]

Wrong chain? Stretched chain?

[@geojor]

thanks...

[@fuelrat39]

nice video

[@AnagramForCraig]

nice video!

[@peteralbert1041]

Clear and concise, thank you. I also have a bar chain oil leak on my ms029... .pointers to diag. & fix ?

[@miguelbarahona5367]

Thanks

[@kendavis8138]

A rope, great idea!

[@mikelewis5152]

I am starting on my farm boss oiler. Without you tube. I would just take it to Morton's or break it worse.

[@mattsan70]

you are missing the clutch plate - that's why it got mangled in the first place

[@fastfeh1]

You didn't SHOW how to remove & replace worm gear the whole purpose of the video

[@quirky5555]

First make sure your brake is off...

[@timidater4803]

dude, clean that air cleaner!!

[@davemitchell7270]

My rope broke 😠

[@DrunkenNuts]

nevermind, not even close. lol

[@RobRed2007]

Very well explained - thanks

[@王老哥-f3e]

very nice work

[@smallengineshop]

+王老哥 Thanks for watching!

[@timkirkpatrick9155]

Thanks, good tips.