DISCLAIMER: In my haste of reassembling this saw for the umpteenth time, I assembled the metering diaphragm side of the carb with the gasket flipped. This will cause flooding. However even if assembled in the correct order, this would not address the gaping hole that was sucking in air on the worn intake manifold boot at 26:24 The correct order is carb, gasket, diaphragm, cover. My sincere apologies for any confusion this might cause. If this video helped you, please consider clicking the $THANKS button above 🙌 Watch this video next to see how I fabricated my pressure/vacuum tester: th-cam.com/video/HbSbugUHTxA/w-d-xo.html
While a new saw might be the go, a new intake boot would fix it and it would do another turn. Having put all the parts into it, it seems a waste to throw it in the parts box. Why not fix it and buy a second new saw?
As soon as I saw that exhaust I knew that the spark arrester was fully blocked, lol. The rest of the saw was a real mess. As usual you’ve done a great job and very thorough.
As a MS170 owner for the past 6 years who has performed basic maintenance on my saw, I found this video very informative and well done. I’m at the point of having to perform some of the maintenance shown here so what I learned will be put to good use. A tip O’ the hat to you.
Stella, this was absolutely the best video I have seen in a very long time. The detailed narration with rationales was over the the top for me. BRAVO!!!! How you kept it all together with all the tiniest of parts and assembled with confidence was simply breathtaking. I am so impressed with your cool demeanor, confidence and expertise. You are one of those special people that makes this country great!! Thank you so very much for sharing your projects. Whomever provided you with this challenge should be thankful for your skill and expertise, including your physical dexterity!!! What a PRO you are. God Bless...! 😀
Wonderful job talking us thru what you did & why you did it. If I was in your area, I’d drop off my small engines for your patient repair. Since i’m not, I appreciate your taking the time to show us how it’s done. Thank you!
I love the MS170 ! I own 2 off them and some bigger versions. But these tiny saws never let me down! Just clean them good after use and they run for years.
Finally bought a compressor to have compressed air for cleaning and drying etc. Great tool to have. Thx for your videos, hope you are going ok, looking fwd to next video!
@@TheLawnmowerLady More to life than pleasing all your TH-cam fans! I've started a small repair shop in retirement for a hobby really. Prob about 40 or 50 machines so far. You and the usual others in the small engine clan have been a terrific help and I enjoy all your adventures! Pete.
"Tom" re the mityvac, I had one delivered about 8 hours ago after seeing the rave reviews. I have a dud. Box is internally battered and it holds no pressure or vacuum. The dial is all scuffed and I think they sent me a second hand unit. No user instructions BUT the warranty was present. Yet to do my return request as I got too busy watching your vids. Keep 'em coming.
Dang! That's terrible. If from AMZN, yes there are often QC problems with returns. I hope you get a good one soon. I already bought one, no regrets. Thanks for watching. Cheers!
@@TheLawnmowerLady Yep AMZN, have been good overnight but i have ordered a new one and instructed them to contact the company and perform QC and better packaging. AMZN gifted me £10 but I just wanted what I ordered. HeyHo, I have to wait another fortnight.
I thought that at the beginning Stella, being $199.00 a Stihjn shop would of charged an arm and a leg plus parts- Best path is to replace and keep old one as a parts machine😊
Oh snap! I was waiting to see a great running saw, after your excellent repair work. Personally, I did something really foolish that led to the demise of my MS250, same age as the MS170. I bought a new one, and have the original for parts... Great video.
You and me both! If it were my saw, I might have fixed it, but I don't blame the owner for pulling the plug before repairs got expensive. He now has a great parts saw. That piston was in great shape. I appreciate you watching. Cheers!
Sometimes on the parts cannon you gotta know when to cease fire and retreat , this one was more better off cost effective wise a parts machine for him well done stella 🔧
I have a clamp on vice I put on my outside bench any time I have a muffler like that. I burn off the spark arrestor and the muffler completely. The muffler always produces a lot of smoke and flames up a bit when the carbon starts to burn. I keep going, into both sides, until it stops smoking. Does a thorough job in a fairly short time.
It's a great diagnostic tool, let alone a good brake bleeder for my scooter. I've already purchased the MV8500. I've gotten my money's worth on that old kit.
Great video Stella. I hate working with the linkages on a chainsaw. I love my Vessel screw drivers. I have a mighty vac 8500 kit and it is very handy. Have a great day!
I bought a 170 from the flea market sight unseen missing spark plug air filter and totally filthy. Cleaned it up , cleaned carb , filter , plug. Thing runs 100% for 2 years and still 100% nothing but trufuel thru it.
I have had mine for many years and abused the living heck out of it. Using for roots and stumps with carbide chain the last few years. Still runs like a top. But the chain started coming loose quickly. New bar, chain, sprocket and adjuster. Same thing. Loosens up after a couple revs. Shaft is spinning visually true with no binding. Last thing I'm gonna do is change the cover since these don't have the bar bumpers like the bigger saws. 200 bucks for a new one so not gonna put anymore money into it.
I appreciate you watching. I think you nailed it on the head… Cheap, and near about disposable. There’s far better quality in an established brand as well as the follow-up customer buying it from a local shop.
Fire it up elkskins the Legend Taryl no body Beat 🎉🎉🎉🎉🎉🎉🎉 p.s. Taryl wood have figured that out and saved this man in Alot of different ways😢😢😢😢😢😢😢😢😢😢😢😢😢
I appreciate your observation. I try to make my videos accessible to the average homeowner that may not possess all the speciality tools that often make the job easier. Thanks for watching. Cheers!
Great useful video.. I think you may have put the metering diaphragm gasket on the wrong side of the diaphragm causing the needle valve to open early.. Sorry if I'm wrong..
Thanks for pointing that out. I did pin a comment to address this. This chainsaw was a multi-day challenge, (wrong parts arrived, multiple days I could not work on it blah, blah, blah) and if you notice that glove I'm wearing only on my right hand, I slammed my knuckle trying to start it the week before. I'm not saying this is any reasonable excuse for this oversight. There are often hours of video takes to get a good camera angle, or decent lighting. And we all make mistakes sometimes. This would not fix the gaping air sucking hole due to the worn intake manifold boot (26:24)
Nice video and thanks for sharing. I totall agree, sometimes is just not worth it and you gotta know when to hit the brake. Nice video and goor thoughts as always. Cheers! 👍
Use Purple Power to clean saws with an old tooth brush and compressed air. This saw has been used a lot with bad fuel and left to sit a long time with ethanol fuel in it from what I can tell. The only way that throttle rod came off is for it to be removed by someone. I use Walbro or Zama parts on my saws. Sten makes some good parts but I do not use them unless they are all I can get, which is not usually the case. My MS 170 is sitting out in my shop loaded with Stihl MotoMix. I would bet money it will not run and it has been a year since I ran it.
Actually that throttle linkage can pop off when the choke lever is forced around that barb sticking out that engages the linkage into the 1/2 choke position. When that happens, the small bend in the linkage pushes around to the wrong side of that plastic barb. The linkage then pops off the throttle on the carb body when you move the choke handle past the 1/2 choke position into the off position. The same thing can happen if the choke lever is forced into 1/2 or full choke position without engaging slightly on the throttle.
@@TheLawnmowerLady you mean if someone forces the control lever out of its Norman stepped position the throttle rod can disengage. I have never had that to happen but I know how to crank a Stihl saw. I have about 20 of them.
These are chainsaws for occasional use, it was probably never truly maintained as it should have been. That being said for everything you put into it depending on where you are and how some places price gouged you these chainsaws are selling for $200 and many places less so I would go with the new MS 170 at your local Stihl dealer not necessarily or Ace Hardware or anything else that marks them up.
For some reason, I can't figure out why, some videos take off like wildfire, others simmer before taking on a new life, some just never get a go. If I knew why exactly, I would be very wealthy. Now I just have a fun and satisfying hobby to share.
There's a pile out back of every small engine shop composed of residential equipment like this. Owner could have taken better care but he knew what he had. Used hard, put up wet.
I have seldom found a new lifter lever to be improperly adjusted. I always use every new part in a rebuild kit, including the spring. Did I see you put the gasket on the pump side, first. The diaphragm goes against the carb body on the pump side and then the gasket. On the metering side the gasket does go on first and then the diaphragm. I use a Might Vac for pressure testing.
(Not a task 'anyone' can see to complete success.) Tom now at an impass; Rubber gasket B trash Dick is no help as well, Failed, no time 2 dwell Harry does concur A new saw, fer sure! Stella: Another great repair video showing the reality of small engine repair. Thanks for your valuable time and resources, so generously shared with us. ⭐️⭐️⭐️⭐️⭐️👍
The owner should just buy an electric chainsaw rather than another Stihl MS170. I think that electric chainsaws have made low-end gas chainsaws more or less obsolete. Gas may still be king for professionals, but they aren't the ones buying $200 chainsaws, and they know how to maintain them. For someone who just uses a chainsaw for occasional yard work at home I think they'd have better luck with an electric one.
Gave up too early on this one. I suspect the spark arrestor was only issue and the throttle arm fell off when he was monkeying with it. The symptoms match up exactly and I have personally ran into that problem a few times before. Excessive idle time and/or heavy oil mixture does it and was also indicated by the spark plug condition (although the spark plug was still fine and would have cleaned up). The later problem of it not running was caused by the carb rebuild which was probably identified after talking to the customer and the decision was made to go new. I don't suspect the intake boot because it held vaccum with no problems and if there was an issue it would have showed up there. Even if there was a tiny issue a light smear of rtv would have solved it but I don't believe it was necessary in this case and feel the vacuum test proves that theory. The saw had great compression and it was a xmas gift from a parent so while financially more labor sometimes doesn't make sense the sentimental value may.
It only held vacuum when I inserted that rubber in between. I was trying to test the crankcase seals, and it would not seal until I added that rubber. That intake manifold should be sitting proud 1mm or so on the engine case. It was one massive sucking air leak. I agree on the sentimental value, but the guy is keeping the saw for parts. Thanks for watching.
@@TheLawnmowerLady al lot of 3rd party carbs now include an intake manifold. Are those junk? they're just plastic... how can that possibly hold up when the saw gets hot? That almost seems like a flaw which would lead to the conclusion: do not buy another one of this model ... going to (eventually) have the same problem?
@@chuckhortler2814 I sort of agree, but the intake is a wear/tear item. Whatever the material is does compress, and eventually loses its sealing capabilities. Aftermarket parts can be hit and miss, often not worth the cost savings.
A Champion plug is not the Stihl factory plug for this saw. It should be a Bosch plug. Bad gas is the most common two cycle problem. Not running them wide open in wood is another problem. They are made to operate at full throttle in wood. Failure to do so will block the spark arrester screen.
Someone brought me a saw like this. The boot between the carb and the cylinder had a crack in it, leaned out the mix and fried the piston and cylinder. I sourced the parts and they cost more than a new saw. I found it kind a play on words, Stihl, steal. I was working on old school saws without the boot that were still running and just needed some maintenance. Very interesting, anti vibration turned into vibrating that dudes money out of his pocket. Yup, steal.
Can’t win them all. I’ve just recently worked on a ms170. It wouldn’t start, easy fix. Just had to put the plug back into it, somebody had taken it out and not put it back in !
Haha! If they were all that simple... I did get a Honda mower one time... the owner complained it would start easily, run OK for about 3-4 minutes. Turns out she was turning the fuel tap on for about 5-10 seconds, while she checked/added fuel. She then turned the fuel tap off, and then started the mower! SMH
Your comment sounded rude and condescending: assuming I don't know how to set the adjustment screws on a 2-stroke. Why call me Jack? Is that shorthand for I don't know jacks**t ? There are no adjustments on a Stihl MS170 carburetor. What do you not understand about that? Even if there were H and L screws, no adjustments would over come the massive air leak presented by the old and compressed intake boot. Did you watch the video till the end? Further repairs would be more expensive that buying a new one.
If it was mine, I probably would tear it down and replace that intake manifold. Hard to justify that expense to a paying customer. I appreciate you watching. Cheers!
I think just years of neglect. The only reason it was running before I cleaned it up was it was so clogged up. It was getting air through the manifold leak enough to idle, but the screen was so clogged, it died
It is very bad that you use old gas to clean your parts. First your insurance will not pay you for a fire that is caused by an explosion. from the vapors of the old gas. Second it is very bad for your health to breath in the fumes of the old gas. We used to use gas to clean parts until I was in an explosion caused by the fumes from the gas and our air compressor when it started up and blew up our shop. The insurance did an investigation plus our fire department did a follow up and fined my boss over $10,000.00 . for negligence for using gas to clean parts.
Hey, Stella! Thought you might want to see this comment I read on James Condon’s channel today. “@comeasyouare4545 48 minutes ago Build a shaker, or tumbler for gas tanks. An old cloth dryer makes a good one. Just disconnect the heating element. Drill holes through. the drum to suspend the tank in the center at four points solid cooper wire. Number 12 should do.” Maybe time to scrounge one of those old dryers people throw away because they don’t heat anymore? 😉👍
Don't feel bad. I bought one of these garbage saws, and it's never run propey. Two carbs were replaced under warranty, and it still won't run. The saw has less than 3 hours on it. I'll never buy another Stihl chainsaw of any type again.
As much time as you had invested in this saw, you should have finished the job and replaced that seal between the carb and cylinder. I wouldn't have charged the guy any extra time because it's something that should have been done when you had the carb off for rebuilding. That's just my 2 cents worth.
@@TheLawnmowerLady I failed to mention in my earlier comment that you are a knowledgeable mechanic and I like your technique. I use old gas as my cleaning solvent too.
$1.99 worth of materials foiled a repair on a $199.00 saw? Couldn't you just trace the gasket on the outside of the carb on a piece of (thicker?) gasket material and put that against the piston-side of the carb? the rubber you had on there in the compression test was thick but not ... beyond the dimensions of thicker gasket material? My saws exhibits the same problems ... runs great then cuts out. I have two 180Cs which are now about equally old and cut out at about the same age with the same hours on them.
Granted the owner has never taken it to a shop for service in its lifetime, but calling him a liar is a bit harsh. I don't think changing a spark plug, or replacing the chain (which he as done) really moves the needle here. I drive antique 2-stroke motor scooters, and I don't consider swapping out a spark plug on the side of the road as service or maintenance.
It's always better to repair the older equipment. Tere just built better. And people need to know how .some day you may not be able to buy a gas-powered saw.
I agree, especially if it was my own saw, I would likely complete the repairs. But I would be doing a disservice to my client if my parts/labor for the repair exceeded the price of a new one. I appreciate you watching!
@TheLawnmowerLady I've always been a fix it my self kind of guy.one of meny things my DAD tought me as a kid.im now in retirement age I should have more time. And you're welcome. I like watching clips that have good information. Tha k you.
People that don't want to take care of there gas powered equipment. Should just buy battery powered equipment. This saw is horrible I have a ms170 my dad loaned me. Way better shape it's 5 years old. People got money to burn in my opinion.
This was informative in the worst way. Why would you tear it down and not replace the boot, I mean you were there...Then you reassemble the saw after all of the other work and play the "I never thought about that" game. The saw was boot away from running fine. Sorry Lawnmower Lady, I respect what you do but this was pathetically easy.
@@TheLawnmowerLady In my experience you will save money buying bigger pro saws. I burn those little ones up. Always someone sticking it in some thick hardwood it was not meant for. Pro saws are far easier to service also.
Ther's an artery on your thumb it's the main digit for your hand loose it you are f--ked listen to me I have rainards syndrome in my hands i'am 71 and having real trouble
New carb is not going to fix the worn intake manifold boot. I don't think it's wise to throw money an parts at a machine that exceeds it's replacement value.
Glad to find your channel. I love my Sthil 170 but exhaust has been wet since new. I threw away the spark arester. Is it OK to spray that brake cleaner in the cly and wash away the lube ?
If you do that, you'll need to add a few squirts of 2-stroke oil in the cylinder, pull the starter to get those rings we'll lubed. Expect it to be a little smoky when you first start it. That brake cleaner will flush out all the good stuff. Thanks for watching.
DISCLAIMER: In my haste of reassembling this saw for the umpteenth time, I assembled the metering diaphragm side of the carb with the gasket flipped. This will cause flooding. However even if assembled in the correct order, this would not address the gaping hole that was sucking in air on the worn intake manifold boot at 26:24 The correct order is carb, gasket, diaphragm, cover. My sincere apologies for any confusion this might cause.
If this video helped you, please consider clicking the $THANKS button above 🙌 Watch this video next to see how I fabricated my pressure/vacuum tester: th-cam.com/video/HbSbugUHTxA/w-d-xo.html
Compost happens. You corrected it.
@@jimbrewer2893 😹
While a new saw might be the go, a new intake boot would fix it and it would do another turn. Having put all the parts into it, it seems a waste to throw it in the parts box. Why not fix it and buy a second new saw?
Put a fully adjustable 025 carb on it
@@Wanous-hv7zo that works too, but that wouldn't fix the worn intake manifold
As soon as I saw that exhaust I knew that the spark arrester was fully blocked, lol. The rest of the saw was a real mess. As usual you’ve done a great job and very thorough.
I appreciate you watching!
As a MS170 owner for the past 6 years who has performed basic maintenance on my saw, I found this video very informative and well done. I’m at the point of having to perform some of the maintenance shown here so what I learned will be put to good use. A tip O’ the hat to you.
Glad it was helpful!
Stella, this was absolutely the best video I have seen in a very long time. The detailed narration with rationales was over the the top for me. BRAVO!!!! How you kept it all together with all the tiniest of parts and assembled with confidence was simply breathtaking. I am so impressed with your cool demeanor, confidence and expertise. You are one of those special people that makes this country great!! Thank you so very much for sharing your projects. Whomever provided you with this challenge should be thankful for your skill and expertise, including your physical dexterity!!! What a PRO you are. God Bless...! 😀
Thank you so much Mr G!
Wonderful job talking us thru what you did & why you did it. If I was in your area, I’d drop off my small engines for your patient repair. Since i’m not, I appreciate your taking the time to show us how it’s done. Thank you!
I appreciate you watching. Cheers!
That bottle of pinot grigio helped.. Thanks for taking us to school Stella.
😀 Any time Mr Bruce! Cheers!
I love the MS170 ! I own 2 off them and some bigger versions. But these tiny saws never let me down! Just clean them good after use and they run for years.
Take good care of anything, and it lasts a long time. I appreciate you watching.
Great tip on how to preasure test the crank case. Thanks.
Glad it was helpful!
My ms 170 just stopped working mid use
. Turns out the crack case has hole/ cracked.
Finally bought a compressor to have compressed air for cleaning and drying etc. Great tool to have. Thx for your videos, hope you are going ok, looking fwd to next video!
I've been on a little break. Thanks for asking. I appreciate you watching. Cheers!
@@TheLawnmowerLady More to life than pleasing all your TH-cam fans! I've started a small repair shop in retirement for a hobby really. Prob about 40 or 50 machines so far. You and the usual others in the small engine clan have been a terrific help and I enjoy all your adventures! Pete.
"Tom" re the mityvac, I had one delivered about 8 hours ago after seeing the rave reviews. I have a dud. Box is internally battered and it holds no pressure or vacuum. The dial is all scuffed and I think they sent me a second hand unit. No user instructions BUT the warranty was present. Yet to do my return request as I got too busy watching your vids. Keep 'em coming.
Dang! That's terrible. If from AMZN, yes there are often QC problems with returns. I hope you get a good one soon. I already bought one, no regrets. Thanks for watching. Cheers!
@@TheLawnmowerLady Yep AMZN, have been good overnight but i have ordered a new one and instructed them to contact the company and perform QC and better packaging. AMZN gifted me £10 but I just wanted what I ordered. HeyHo, I have to wait another fortnight.
@@hubby-tubadventures01 Score! A £10 discount.
Sorry to hear that mate, that sucks :(
In the UK for the Carb Manifold the OEM 1 is $20 and the cheap ones from China about $3 to $7.
I thought that at the beginning Stella, being $199.00 a Stihjn shop would of charged an arm and a leg plus parts-
Best path is to replace and keep old one as a parts machine😊
I think a happy customer at the end of the day is a good thing. Thanks for watching.
Good video Stella - it clearly shows the amount of work and frustration associated with repairing low cost chainsaws - thanks for sharing this.
Thank you very much Claus! They are frustrating.
No I'm not Tom. I'm the lawn mower lady. Nice work.
I appreciate you watching. Cheers!
Hahaha
Oh snap! I was waiting to see a great running saw, after your excellent repair work. Personally, I did something really foolish that led to the demise of my MS250, same age as the MS170. I bought a new one, and have the original for parts... Great video.
You and me both! If it were my saw, I might have fixed it, but I don't blame the owner for pulling the plug before repairs got expensive. He now has a great parts saw. That piston was in great shape. I appreciate you watching. Cheers!
When you showed the piston going up and down it looked like there weren’t any piston rings on that piston.
It was hard to see, but the rings looked good. Still had 135 PSI
@@TheLawnmowerLadyexactly
Sometimes on the parts cannon you gotta know when to cease fire and retreat , this one was more better off cost effective wise a parts machine for him well done stella 🔧
Haha! You know it. Cheers!
@@TheLawnmowerLady cheers 🍻
Wowsers, this video flew! well done on this one
I honestly wish I knew why, LOL. Thanks for watching. Cheers!
I have a clamp on vice I put on my outside bench any time I have a muffler like that. I burn off the spark arrestor and the muffler completely. The muffler always produces a lot of smoke and flames up a bit when the carbon starts to burn. I keep going, into both sides, until it stops smoking. Does a thorough job in a fairly short time.
Good ideas.
It’s been several months since your last video. Just checking in to see if you are ok. Love your videos.
All good, thank you. I desperately needed a break, to take care of home repairs, sick cats, etc. Some times life gets in the way of living. Cheers!
At 18:35 wrong order of diaphragm and gasket...😢
Did you read my pinned comment?
Friend gave me his Stihl weadeater & shindaiwa blower in that condition both needed tune ups both work much better now great video Tom!
I appreciate you watching. Cheers!
wow! That was sure a lot of time consuming effort. Great Instructional video. I really enjoyed that. Thank you.
I appreciate you watching!
You might want to put a rag or something blocking the exhaust port when cleaning to prevent anything from getting inside.
You are absolutely right. Cheers!
I like your pressure tester, I need to get one.
It's a great diagnostic tool, let alone a good brake bleeder for my scooter. I've already purchased the MV8500. I've gotten my money's worth on that old kit.
Great video Stella. I hate working with the linkages on a chainsaw. I love my Vessel screw drivers. I have a mighty vac 8500 kit and it is very handy. Have a great day!
Cheers Bob! I love mine too!
I bought a 170 from the flea market sight unseen missing spark plug air filter and totally filthy. Cleaned it up , cleaned carb , filter , plug. Thing runs 100% for 2 years and still 100% nothing but trufuel thru it.
I use a .25” drill to seat the inlet screen in its hole.
That works too. Thanks for watching.
Excellent videos. Thanks!
And a huge Super Thanks from me for supporting my channel! I truly appreciate you watching my videos. Cheers!
I have had mine for many years and abused the living heck out of it. Using for roots and stumps with carbide chain the last few years. Still runs like a top. But the chain started coming loose quickly. New bar, chain, sprocket and adjuster. Same thing. Loosens up after a couple revs. Shaft is spinning visually true with no binding. Last thing I'm gonna do is change the cover since these don't have the bar bumpers like the bigger saws. 200 bucks for a new one so not gonna put anymore money into it.
Another great video!!
Glad you enjoyed it!
Great detailed video, thanks for sharing.
What is your opinion of clone chainsaw kit and of the cheap Amazon chainsaws?
I appreciate you watching. I think you nailed it on the head… Cheap, and near about disposable. There’s far better quality in an established brand as well as the follow-up customer buying it from a local shop.
Fire it up elkskins the Legend Taryl no body Beat 🎉🎉🎉🎉🎉🎉🎉 p.s. Taryl wood have figured that out and saved this man in Alot of different ways😢😢😢😢😢😢😢😢😢😢😢😢😢
See this is what I want to see a regular person doing this stuff she isn't using anything that the everyday person doesn't have
I appreciate your observation. I try to make my videos accessible to the average homeowner that may not possess all the speciality tools that often make the job easier. Thanks for watching. Cheers!
Great useful video.. I think you may have put the metering diaphragm gasket on the wrong side of the diaphragm causing the needle valve to open early.. Sorry if I'm wrong..
You ARE right! Gasket first on Metering Diaphragm side! Will cause flooding!
Yikes! I'm busted.
Thanks for pointing that out. I did pin a comment to address this. This chainsaw was a multi-day challenge, (wrong parts arrived, multiple days I could not work on it blah, blah, blah) and if you notice that glove I'm wearing only on my right hand, I slammed my knuckle trying to start it the week before. I'm not saying this is any reasonable excuse for this oversight. There are often hours of video takes to get a good camera angle, or decent lighting. And we all make mistakes sometimes. This would not fix the gaping air sucking hole due to the worn intake manifold boot (26:24)
@@TheLawnmowerLady
It’s True Confessions at Stella’s! 😂👍❤️
Nice video and thanks for sharing. I totall agree, sometimes is just not worth it and you gotta know when to hit the brake. Nice video and goor thoughts as always. Cheers! 👍
Thank you so much Anders! I appreciate you watching.
That’s to bad after that work it didn’t operate Stella. Any way, that’s the way it goes, have a great weekend. 👍🏻👍🏻👋👋
Thanks, you too! I appreciate you watching. Cheers!
Use Purple Power to clean saws with an old tooth brush and compressed air. This saw has been used a lot with bad fuel and left to sit a long time with ethanol fuel in it from what I can tell. The only way that throttle rod came off is for it to be removed by someone. I use Walbro or Zama parts on my saws. Sten makes some good parts but I do not use them unless they are all I can get, which is not usually the case. My MS 170 is sitting out in my shop loaded with Stihl MotoMix. I would bet money it will not run and it has been a year since I ran it.
Actually that throttle linkage can pop off when the choke lever is forced around that barb sticking out that engages the linkage into the 1/2 choke position. When that happens, the small bend in the linkage pushes around to the wrong side of that plastic barb. The linkage then pops off the throttle on the carb body when you move the choke handle past the 1/2 choke position into the off position. The same thing can happen if the choke lever is forced into 1/2 or full choke position without engaging slightly on the throttle.
@@TheLawnmowerLady you mean if someone forces the control lever out of its Norman stepped position the throttle rod can disengage. I have never had that to happen but I know how to crank a Stihl saw. I have about 20 of them.
What is it pressure méter maschine What you use pressure text in carburator and engine?
Mitivac MV8500
Great Job , Well Done
I appreciate you watching. Cheers!
These are chainsaws for occasional use, it was probably never truly maintained as it should have been. That being said for everything you put into it depending on where you are and how some places price gouged you these chainsaws are selling for $200 and many places less so I would go with the new MS 170 at your local Stihl dealer not necessarily or Ace Hardware or anything else that marks them up.
Excellent information/video!
Have you compared the view count of this video (chainsaw repair), to other videos focused on mowers.....? 🤔
For some reason, I can't figure out why, some videos take off like wildfire, others simmer before taking on a new life, some just never get a go. If I knew why exactly, I would be very wealthy. Now I just have a fun and satisfying hobby to share.
There's a pile out back of every small engine shop composed of residential equipment like this. Owner could have taken better care but he knew what he had. Used hard, put up wet.
Thanks!🙏
Whoa! Mr G!!! It's my pleasure. Super thanks to you for supporting my channel. Cheers!
I have seldom found a new lifter lever to be improperly adjusted. I always use every new part in a rebuild kit, including the spring. Did I see you put the gasket on the pump side, first. The diaphragm goes against the carb body on the pump side and then the gasket. On the metering side the gasket does go on first and then the diaphragm. I use a Might Vac for pressure testing.
Yes, did you read my pinned comment? Mitivac is a great tool for small engine diagnosis.
Good job.i want to learn more❤
Hello to you ! Are you OK You have not posted for awhile. Hope you are still filming.
It's worth fixing but lot of work had to go into it to make it a lot better
If it was mine, I probably would fix it. But cost prohibitive for a client.
(Not a task 'anyone' can see to complete success.) Tom now at an impass;
Rubber gasket B trash
Dick is no help as well,
Failed, no time 2 dwell
Harry does concur
A new saw, fer sure!
Stella: Another great repair video showing the reality of small engine repair. Thanks for your valuable time and resources, so generously shared with us. ⭐️⭐️⭐️⭐️⭐️👍
Thank you!!!
@TheLawnmowerLady BTW.. a thumb ring is a reminder that ride sharing need not involve an APP✌️👍
The owner should just buy an electric chainsaw rather than another Stihl MS170. I think that electric chainsaws have made low-end gas chainsaws more or less obsolete. Gas may still be king for professionals, but they aren't the ones buying $200 chainsaws, and they know how to maintain them. For someone who just uses a chainsaw for occasional yard work at home I think they'd have better luck with an electric one.
I agree.
Gave up too early on this one. I suspect the spark arrestor was only issue and the throttle arm fell off when he was monkeying with it. The symptoms match up exactly and I have personally ran into that problem a few times before. Excessive idle time and/or heavy oil mixture does it and was also indicated by the spark plug condition (although the spark plug was still fine and would have cleaned up). The later problem of it not running was caused by the carb rebuild which was probably identified after talking to the customer and the decision was made to go new. I don't suspect the intake boot because it held vaccum with no problems and if there was an issue it would have showed up there. Even if there was a tiny issue a light smear of rtv would have solved it but I don't believe it was necessary in this case and feel the vacuum test proves that theory. The saw had great compression and it was a xmas gift from a parent so while financially more labor sometimes doesn't make sense the sentimental value may.
It only held vacuum when I inserted that rubber in between. I was trying to test the crankcase seals, and it would not seal until I added that rubber. That intake manifold should be sitting proud 1mm or so on the engine case. It was one massive sucking air leak. I agree on the sentimental value, but the guy is keeping the saw for parts. Thanks for watching.
@@TheLawnmowerLady al lot of 3rd party carbs now include an intake manifold. Are those junk? they're just plastic... how can that possibly hold up when the saw gets hot? That almost seems like a flaw which would lead to the conclusion: do not buy another one of this model ... going to (eventually) have the same problem?
@@chuckhortler2814 I sort of agree, but the intake is a wear/tear item. Whatever the material is does compress, and eventually loses its sealing capabilities. Aftermarket parts can be hit and miss, often not worth the cost savings.
A Champion plug is not the Stihl factory plug for this saw. It should be a Bosch plug. Bad gas is the most common two cycle problem. Not running them wide open in wood is another problem. They are made to operate at full throttle in wood. Failure to do so will block the spark arrester screen.
Champions are not shabby plugs. I can't say the same about Torch or E3, they go directly into the bin.
Someone brought me a saw like this. The boot between the carb and the cylinder had a crack in it, leaned out the mix and fried the piston and cylinder. I sourced the parts and they cost more than a new saw. I found it kind a play on words, Stihl, steal. I was working on old school saws without the boot that were still running and just needed some maintenance. Very interesting, anti vibration turned into vibrating that dudes money out of his pocket. Yup, steal.
I hear ya!
Can’t win them all. I’ve just recently worked on a ms170. It wouldn’t start, easy fix. Just had to put the plug back into it, somebody had taken it out and not put it back in !
Haha! If they were all that simple... I did get a Honda mower one time... the owner complained it would start easily, run OK for about 3-4 minutes. Turns out she was turning the fuel tap on for about 5-10 seconds, while she checked/added fuel. She then turned the fuel tap off, and then started the mower! SMH
What problem this Stihl 170? You not know setting carburator Jack? I have Stihl 171 and Stihl 880
There are no adjustments on Stihl MS170 carburetor. What problem with you?
@@TheLawnmowerLady Why you say What problem with me??
Your comment sounded rude and condescending: assuming I don't know how to set the adjustment screws on a 2-stroke. Why call me Jack? Is that shorthand for I don't know jacks**t ? There are no adjustments on a Stihl MS170 carburetor. What do you not understand about that?
Even if there were H and L screws, no adjustments would over come the massive air leak presented by the old and compressed intake boot. Did you watch the video till the end? Further repairs would be more expensive that buying a new one.
Looking like you'll need to put a longer pull start rope in that saw😮
That would be helpful.
I would have built that little saw into an animal, stihl products are always worth the effort and money to rebuild 😊
If it was mine, I probably would tear it down and replace that intake manifold. Hard to justify that expense to a paying customer. I appreciate you watching. Cheers!
If this person would have ran amsoil in it, it would be a lot cleaner 😂
18:52, Why does it look like there's a carb passageway not covered on that pump cover? I'm not familiar w/ these carbs so excuse my question please.
If I recall, that's an alignment stub. It doesn't pass through.
@@TheLawnmowerLady Ah so. Makes sense.
Tin Man in Canada would have turned that little MS170 into a beast of a saw 😊
Why you not use Pascal and Bar pressure méter test? I use Bar my Stihl 880 and Stihl 171 and Stihl FS560 and Stihl HS45
PSI is most common for pressure and and inHG (inches of mercury) is used for vacuum.
Great video
Thanks!
Tom! That is Vintage! 😊❤
Sorta like me. 😹
@@TheLawnmowerLady Stella- you are the best vintage.
Hahaha
Trash the spark arrestor entirely
Maybe the gas mixture was to rich, just a thought.
I think just years of neglect. The only reason it was running before I cleaned it up was it was so clogged up. It was getting air through the manifold leak enough to idle, but the screen was so clogged, it died
It is very bad that you use old gas to clean your parts. First your insurance will not pay you for a fire that is caused by an explosion. from the vapors of the old gas. Second it is very bad for your health to breath in the fumes of the old gas. We used to use gas to clean parts until I was in an explosion caused by the fumes from the gas and our air compressor when it started up and blew up our shop. The insurance did an investigation plus our fire department did a follow up and fined my boss over $10,000.00 . for negligence for using gas to clean parts.
You doing ok Stella? I miss your awesome content and your can-do attitude. I hope you are just too busy to post videos right now.
Working on it Tom! Just on a little break. I appreciate you checking in. Cheers!
@@TheLawnmowerLady I worry about my peeps. I’m happy to hear UR OK.
Hey, Stella! Thought you might want to see this comment I read on James Condon’s channel today.
“@comeasyouare4545
48 minutes ago
Build a shaker, or tumbler for gas tanks. An old cloth dryer makes a good one. Just disconnect the heating element. Drill holes through. the drum to suspend the tank in the center at four points solid cooper wire. Number 12 should do.”
Maybe time to scrounge one of those old dryers people throw away because they don’t heat anymore? 😉👍
If I lived on a farm, maybe. I’m sort of landlocked, and live in a tiny house, LOL
Mine won't even start anymore...❤❤😂😂😂
Don't feel bad. I bought one of these garbage saws, and it's never run propey. Two carbs were replaced under warranty, and it still won't run. The saw has less than 3 hours on it. I'll never buy another Stihl chainsaw of any type again.
Just by looking at muffler spark arrestor has to be plugged😅😅
That amongst other issues.
Respect 👍
Thank you for watching!
Use Moto Mix in it.
Stella aren’t they only $199 new ?
Yep! I showed some ads towards the end. If it was mine, I might have fixed it.
I don't understand why people spend all this money on equipment and don't do general maintenance on it.
I know. Right?
They have too much money
As much time as you had invested in this saw, you should have finished the job and replaced that seal between the carb and cylinder. I wouldn't have charged the guy any extra time because it's something that should have been done when you had the carb off for rebuilding. That's just my 2 cents worth.
Thanks for watching.
@@TheLawnmowerLady I failed to mention in my earlier comment that you are a knowledgeable mechanic and I like your technique. I use old gas as my cleaning solvent too.
$1.99 worth of materials foiled a repair on a $199.00 saw? Couldn't you just trace the gasket on the outside of the carb on a piece of (thicker?) gasket material and put that against the piston-side of the carb? the rubber you had on there in the compression test was thick but not ... beyond the dimensions of thicker gasket material?
My saws exhibits the same problems ... runs great then cuts out. I have two 180Cs which are now about equally old and cut out at about the same age with the same hours on them.
The rubber piece was able to be compressed and fill the gap. The gasket(s) I tried to make would not fill the large gap.
Crank seals
Nope, that's what I showed when I blocked off the intake. The crack seals held pressure and vacuum.
Opti-2 to the rescue.
Interesting. I had to look that up. Do you use that in your 2-T gear?
Great job but cant win them all
I know, right?
Great might keep those grandkids off those iPads
That is not the factory plug for a MS 170. It should have a Bosch WSR6F in it. The owner is lying about his saw.
Granted the owner has never taken it to a shop for service in its lifetime, but calling him a liar is a bit harsh. I don't think changing a spark plug, or replacing the chain (which he as done) really moves the needle here. I drive antique 2-stroke motor scooters, and I don't consider swapping out a spark plug on the side of the road as service or maintenance.
Very disappointed that after all that, he needs a new saw. What a waste.
It's always better to repair the older equipment. Tere just built better. And people need to know how .some day you may not be able to buy a gas-powered saw.
I agree, especially if it was my own saw, I would likely complete the repairs. But I would be doing a disservice to my client if my parts/labor for the repair exceeded the price of a new one. I appreciate you watching!
@TheLawnmowerLady I've always been a fix it my self kind of guy.one of meny things my DAD tought me as a kid.im now in retirement age I should have more time. And you're welcome. I like watching clips that have good information. Tha k you.
NEVER... EVER use gasoline as a cleaning solvent
Why not? Service manuals for decades suggested this exactly. What do you think is in a petroleum based de-greaser?
The best cleaner out there 🤣
People that don't want to take care of there gas powered equipment. Should just buy battery powered equipment. This saw is horrible I have a ms170 my dad loaned me. Way better shape it's 5 years old. People got money to burn in my opinion.
I just set the muffler on fire and let it burn it out
That works too!
One of the worst saws I ever owned, and have zero regret having sold it.
Hahaha! I get it.
This was informative in the worst way. Why would you tear it down and not replace the boot, I mean you were there...Then you reassemble the saw after all of the other work and play the "I never thought about that" game. The saw was boot away from running fine. Sorry Lawnmower Lady, I respect what you do but this was pathetically easy.
NO. Go buy a MS360
It’s a step up for sure.
@@TheLawnmowerLady In my experience you will save money buying bigger pro saws. I burn those little ones up. Always someone sticking it in some thick hardwood it was not meant for. Pro saws are far easier to service also.
Ther's an artery on your thumb it's the main digit for your hand loose it you are f--ked listen to me I have rainards syndrome in my hands i'am 71 and having real trouble
They are worth fixing
Great video thanks Tom
My pleasure!
Looks like he is using bad gas and the wrong mixture.
Put a new carb on it ,not worth cleaning it ,you spent more time than what a new carb would be installed by now ,really
New carb is not going to fix the worn intake manifold boot. I don't think it's wise to throw money an parts at a machine that exceeds it's replacement value.
That poor saw looks like its been abused !
That air filter is hard as a carp! And there's yer dinner.
If this plug is bad, you should see my plug. It is very VERY oily. It has to be tho because my piston is scored and it has about 1.2hp from an 1.9hp
May need gloves when spraying carb cleaner . Not good to get it on the skin.
I often forget, it is a good idea.
If it was that bad after a life time of mechanic work I would not be 73 and cutting firewood all day
Glad to find your channel. I love my Sthil 170 but exhaust has been wet since new. I threw away the spark arester. Is it OK to spray that brake cleaner in the cly and wash away the lube ?
If you do that, you'll need to add a few squirts of 2-stroke oil in the cylinder, pull the starter to get those rings we'll lubed. Expect it to be a little smoky when you first start it. That brake cleaner will flush out all the good stuff. Thanks for watching.
good advice
Glad it was helpful!