Replacing a Chainsaw Piston and Cylinder

In a previous video, I attempted to repair 4 free chainsaws. This Husqvarna 440 had low compression and wouldn't start so I set it aside, assuming it needed a new piston and cylinder. I cannibalized the oil pump from this saw to repair one of the others so I needed to replace that too. I was able to find aftermarket parts for around $50 bucks so I decided it was worth trying to fix. See the links below for the parts and tools I used:
Piston & Cylinder Kit:
www.ebay.com/itm/133485836142
Oil Pump:
amzn.to/3ggQOpW (affiliate*)
~OR~
www.ebay.com/itm/122592795614
Carb Adjustment Tool:
amzn.to/3k0QiLc (affiliate*)
Compression Tester:
amzn.to/3x0cAnI (affiliate*)
Hemostat Locking Forceps:
amzn.to/2Uxik7l (affiliate*)
Zoom Oiler (like Mustie1 uses):
amzn.to/2QcbXGS (affiliate*)
*Purchasing from these Amazon affiliate links earns my channel a small commission. Think of it as a tip that doesn't cost you anything. Thanks for the support!

[@Mikeattempts]

Piston & Cylinder Kit: www.ebay.com/itm/133485836142 Oil Pump: amzn.to/3ggQOpW (affiliate*) ~OR~ www.ebay.com/itm/122592795614 Carb Adjustment Tool: amzn.to/3k0QiLc (affiliate*) Compression Tester: amzn.to/3x0cAnI (affiliate*) Hemostat Locking Forceps: amzn.to/2Uxik7l (affiliate*) Zoom Oiler (like Mustie1 uses): amzn.to/2QcbXGS (affiliate*) *Purchasing from these Amazon affiliate links earns my channel a small commission. Think of it as a tip that doesn't cost you anything. Thanks for the support!

[@MisterTDiSalvo187]

This is the absolute best video on disassembling a Husqvarna. Instructional, informative, direct and to the point without any extra bs. Thank you 1000 times. Please make more videos. The other KZbin videos suck.

[@Mikeattempts]

Thanks man, I appreciate it!

[@slowallin3144]

Incredibly thorough without any waste, what a thoughtful video.

[@Mikeattempts]

Thanks, I really appreciate the positive feedback!

[@mrbrown6421]

Great confidence builder. I'll check out my 440 on a warm day. Thanks Mike!

[@Mikeattempts]

Thanks for watching!

[@OveBakken]

This is one of the better disassembly videos I have seen! Nicely done! 😃

[@Mikeattempts]

Thanks, I appreciate it! :)

[@Sensei948]

​@@Mikeattempts 33:1 oil mix is ok ?

[@Mikeattempts]

@@Sensei948 It all depends on the brand but Husqvarna recommends a 50:1 mix. Too much 2-stroke oil mix is better than not enough, but it would probably run a little smokey and smell worse.

[@kevinleetreetimefpv111]

Great video. This is the first video I have found actually installing the pin in the piston and the jug on to the piston. Thanks for that. Much easier than expected. Thanks. Great job. I have a stihl ms 362 that needs a jug and piston. Thx

[@Mikeattempts]

I'm always happy to hear when my videos are helpful, thanks for the comment!

[@LucasRichardStephens]

It looks like it has never been used to cut wood. Thanks for sharing!

[@Mikeattempts]

Yeah, I think the saw was only used a little bit before it lost compression. The original owner must have used the wrong oil in the fuel or something, I'm still not sure. Thanks for watching!

[@Abcdef-zp1lq]

Hi mike, I just rebuilt my top end in my husqvarna 450 rancher, thank you for this wonderful vid! I understood everything and made everything so much more simple.

[@Mikeattempts]

That's great to hear, thanks for the comment! :)

[@Abcdef-zp1lq]

@@Mikeattempts Thanks for the vid!

[@How2Man_101]

I'm doing this repair today on a saw that I accidentally poured the wrong can of non mix gas into. I have 2 guesses as to what happened to your saw, 1. Some idiots will use used motor oil and mix it at a higher oil ratio thinking they will save money or a trip to town. It ruins them pretty quick from people Ive heard stories about that mistake. That aftermath usually leaves more wear and scarring. 2. They used bar and chain oil instead of 2stroke oil. But if i were a betting man this is why the saw failed. Thanks for the video. The instructions will be invaluable.

[@Mikeattempts]

I agree, I think it was a brand-new saw being operated by a first timer and they used bar oil instead of 2-stroke in the fuel.

[@How2Man_101]

Yeah my saw with many hard hours on it came apart easily until the cylinder bolts. Snapped 2 decent quality Allen wrenches, Kobalt and Craftsman. Tomorrow i will ball file the heads off and replace the cylinder hardware with new. I do want to get one out to see if they used a thread locking compound.

[@Mikeattempts]

@@How2Man_101 Man, that sucks when a project is going smooth and then all of a sudden throws you a curve ball! Let me know how it goes.

[@skidscraper1634]

Excellent video . Superb clear instructions . Thanks.

[@Mikeattempts]

I appreciate the comment, thanks for watching!

[@georgepolymise8029]

Need to do this repair as well, you make it look easy, thanks for sharing.

[@Mikeattempts]

I appreciate the comment, thanks for watching!

[@av7049]

Top Notch. Thanks Mike, salvaged a knackered Husqvarna thanks to your video. Keep them coming.

[@Mikeattempts]

Awesome, I'm happy to hear the video was helpful! Thanks for taking the time to leave a comment, I appreciate it. :)

[@fwbfsh]

Excellent video and not being a mechanic by trade, the video has given me the confidence that I can repair my 455. Compression test was 50 so I ordered a piston kit today and will use your video as a guide. Thanks for your help!!

[@Mikeattempts]

If I can do it, you can do it. :) Thanks for watching!

[@viperstrike3827]

50 is awful low. Did the saw get straight gassed?

[@OveBakken]

6 months later - how did the 445 repair go?

[@hoosiercarry1149]

@@viperstrike3827 I must have straight gassed mine without knowing it. So I just ordered a kit for my 460. Hopefully I can do this!

[@BikerBenny]

A fresh piston and rings is a happy saw and man! 😀😀 Great job!

[@Mikeattempts]

Yep, thanks for watchin'!

[@jjyemg2397]

Man you did a GREAT JOB on this!!!!

[@Mikeattempts]

I appreciate the positive feedback, thanks for watching!

[@garyh1155]

Excellent video, thank you for publishing it.

[@Mikeattempts]

Thank you for watching it! :)

[@bldrmtnman]

Good job and explanation on the repair and video. Very clear, thank you for your efforts.

[@Mikeattempts]

Thanks for the comment and thanks for watching!

[@riten2]

@@Mikeattempts actually was looking for the same type of video for a Husqvarna 575XP, if you should be thinking of doing one for that machine?

[@Mikeattempts]

@@riten2 I don't have access to a 575XP but, the good news is, the process is pretty much the same for any Husqvarna chainsaw.

[@darenmilbury3621]

Very good video Mike , I will be watching more of your videos..

[@Mikeattempts]

Thanks, I appreciate it!

[@hoosiercarry1149]

Wow, I hope my repair goes 1/5th as easy as you show here on my 460 Rancher!

[@Mikeattempts]

I hope so too, let me know how it goes!

[@soil-aint-dirt4903]

I really enjoyed your video…thanks for posting!

[@Mikeattempts]

Thanks for the positive feedback, I appreciate it!

[@DJInclined]

Just did this on my 435. Worked great! Super helpful video.

[@Mikeattempts]

That's good to hear, thanks for the feedback! :)

[@LifeWithSevenSons]

I just followed this video to replace a destroyed piston in my Husqvarna 350. Two lessons here: 1. Awesome video. It was my first time rebuilding a chainsaw. 2. Have this video ready next time I loan my chainsaw to a neighbor.

[@Mikeattempts]

Hahaha, I'm glad the video was helpful! That neighbor would now be on my "Do Not Lend Tools" list. ;)

[@LifeWithSevenSons]

@@Mikeattempts Same. His words were: "It stopped suddenly and was smoking, and I couldn't pull it, but it will probably be alright." 😂

[@Mikeattempts]

@@LifeWithSevenSons "It will probably be alright"?!?! Dang, it takes some guts to say something like that after you know you just ruined your neighbor's saw. :)

[@daszieher]

​@@Mikeattemptsmy neighbour and I both have good tools and take care of them. We don't lend them out, not even to each other 😂.

[@Mikeattempts]

@@daszieher Yeah, I feel bad declining requests to borrow my tools, but people just don't take care of stuff. You'd think if you borrowed something, you'd take even better care of it than if it was your own.

[@imacgst27]

I know everyone has already told you, but I also just wanted to say what a great video!!! Thank you for taking the time to make it.

[@Mikeattempts]

Thank you for taking the time to watch it and leave me some positive feedback!

[@melaniecharbonneau3122]

You must be a master at small engine repair

[@Mikeattempts]

Far from it, this was the first time I've ever replaced a cylinder and piston. Thanks for watching!

[@MrTimstaaa]

Thank's for the step by step guide. I've got a 445 E ii and im guessing It'll be about the same in term's of tear down. I'll save this for my rebuild when the time comes. 👍🏼

[@Mikeattempts]

Yep, it should be almost exactly the same, let me know how it goes! :)

[@user-kh3ev8yr3p]

Mike, that was a fantastic video! Professionally done. Thank you so much. I plan to attempt the same rebuild on the 440 this weekend.

[@Mikeattempts]

I appreciate the positive feedback, thanks for the comment! :)

[@bradpotter6401]

Great instructional video! I like seeing a nice clean work bench and clean parts to assemble. I also like the way you reinstall the screws by hand. It's much too easy to cross thread or over tighten screws when putting them back in with power tools, especially when they're threaded into plastic. A few suggestions would to be using a gauge to set the air gap on the coil and to get new seals for the crankcase. Even though they are still flexible they could take a set and be flattened out. I'd use a little sealant too just for good luck.

[@Mikeattempts]

Thanks for the feedback, I appreciate it! :) I agree, normally I would have replaced the seals and it's cheap insurance. However, many signs pointed to the possibility that this saw gave up on its first tank of gas. I think the previous owner might have used bar oil instead of 2-stroke oil in the fuel. I thought it over and decided to reuse the seals.

[@RG-wy1ol]

Thanks Mike for making this video.

[@Mikeattempts]

Thank you for watching the video! :)

[@lowlandvideonz4092]

HI Mike WHAT a fantastic video you made here sharp picture at all time,I like you subtitles and clear voice over ,I know as video production man how hard it is to make GOOD stuff like this ,I like your speeding up of some of the process to shortened the video time ,I have a Husqvarna 236 that looks near the same and have put the wrong fuel into to run ,a new coil and a aftermarket carburettor made it still a dead chains saw ,so I was looking for a video that give me the some info how to tackle the next job of removing and replacing the pistol ,Your Video made my day ,Thanks from LOWLAND VIDEO PRODUCTION in New Zealand for your video .

[@Mikeattempts]

I really appreciate your kind words! I try to make my videos how I would want to watch them, all of the info you need and none of the fluff. ;) Thanks for the comment!

[@MrGlovesave33]

Great step by step clear build video. I may rebuild my dad's old 1989 huasqvarna 66 now. Appreciate the clarity with this model'svideo. Take care, from Atlantic Canada. You attempted and succeeded!

[@Mikeattempts]

Thanks for the comment, I appreciate it! Let me know how it goes with the Husky 66.

[@markcoull6496]

Wow! Nice and clear. I will try the rebuild my self. Thanks

[@Mikeattempts]

I appreciate the positive feedback, thanks for watching!

[@twobeards6714]

I ordered a kit for my 357 xp. I had a repair shop do it twice and it failed both times. With your help along with other you tube videos I'm gonna try it myself.

[@Mikeattempts]

That's odd, any idea what made it fail? That's cool you're gonna tackle it yourself this time, let me know how it goes!

[@robstone5333]

Very good video. A big help. Thank you.

[@Mikeattempts]

I'm glad it was helpful, thank you for watching!

[@wingnutt4200]

Details were AWESOME!!!

[@Mikeattempts]

Thanks, I appreciate the feedback!

[@wingnutt4200]

@@Mikeattempts now if you could figure out how to get a hemorrhoid from sticking to the underwear? You could be a called the G. O. A. T....

[@Mikeattempts]

@@wingnutt4200 Hahahahaha!

[@bobdixon4998]

I had to come back and say how professional the narration, and edit and production was! Im several years late but you should be in the video production business. It was like a personally made edition of the tv show "how it's made". Thank you again!!

[@Mikeattempts]

Wow, thanks for the positive feedback! Editing is by far the most time-consuming part so it's nice to know people appreciate my video style.

[@bobdixon4998]

@@Mikeattempts oh I forgot your parents are cool. It's nice that they are supportive. Many parents aren't supportive of young men or women working or owning a business and being self sufficient. Many think the government should do it for you😂😂😂 have a great day!

[@Mikeattempts]

@@bobdixon4998 Yep, it is nice to have the support, thanks for the comment!

[@wesdemoss809]

Excellent . Very well made. Is very informative.

[@Mikeattempts]

Thanks for the comment, I appreciate it!

[@dalebertdurando1496]

Interesting for me. Non-starting 450 Rancher. Good compression, new carb, fresh 'Husky' gas, etc. Piston at exhaust port looked fine. Piston on intake side however was badly scored, indented about 1/8 inch, and cracked at the skirt. The scoring was as wide as the piston rod. I didn't see anything unusual in the cylinder,. Almost like a chunk of metal was jammed at the intake port. I'll probably replace the cylinder and piston to be safe. Great video. I like that you weren't fumbling around like other videos I've watched. Very professional.

[@Mikeattempts]

Dang, that sounds like a lot of damage. Are you the original owner? If not, maybe the previous owner ran it without the air filter and used ether to get it started. The ether would have stripped the oil from the intake side and it would have just been metal on metal. I'm no pro, just a wild guess. I don't even know if ether could cause that kind of damage. I really appreciate the positive feedback, thanks for watching!

[@dalebertdurando1496]

@@Mikeattempts I was original owner. I'm guessing something got into the carb when I had the air filter off. All back together ready to start. Thanks to your video I, found how the ignition kill wires were routed. btw, I often tape the removed screws to the assemblies with masking tape. Then I know where they go. Regarding your dark piston, I might guess the gas was old, looks like varnish. tx Update, running fine now. Thx again

[@Mikeattempts]

@@dalebertdurando1496 Thanks for the update, I'm glad you got it fixed.

[@ront8496]

Thank you for a VERY NICE and well explained.

[@Mikeattempts]

I appreciate it, thanks for the comment!

[@CSilva-nx6go]

I wish you had not made that look so straight forward and easy. Oh did I say fun? Thank you sir!

[@Mikeattempts]

Hahaha, thanks, I appreciate it! :)

[@Billster1955]

Awesome video. I may be doing this procedure on a cs620p saw I just got that only has 90 psi of compression.

[@Mikeattempts]

Cool, let me know how it goes, thanks for watching!

[@samwalker7944]

Use 2 stroke oil, not a 3 in 1 oil for gasket and ring lubrication. Also when removing wrist pin, if it’s not coming out easy, and you’ve tried lubrication and twisting it, ensure the Conrod is fully supported if you take a hammer and punch to it, you’ll easily knacker or put the conrod/bearing/crank out of tru :) Torque wrench for re fitting Thanks for the vid though very handy

[@Mikeattempts]

Thanks for the tips and thanks for watching!

[@MrFreeknassty]

Nice to see a homeowner grade saw rebuilt, a little different than the professional or xp husqvarna saw. Very nice job. Compression should go up as u break it in.

[@Mikeattempts]

Thanks for the feedback, I appreciate it! :)

[@gilberthathaway1655]

Great work!!

[@Mikeattempts]

Thanks! :)

[@safetyharborfirearms]

Great video ...in the process of recylindering my Craftsmen saw

[@Mikeattempts]

Thanks, let me know how it goes with the Craftsman!

[@adrianopruneri4470]

Thank you for your very helpfull guide! I apologized but my English is rather bad. I manage to change piston ring of my 440II because it hadn't any compression. I found original ring piston completely closed around piston. I had to chance it becuase I've broken it during maintenance. Cilinder surface wasn' t ruined, however even if motorsaw functions, it seems to have not original compression. Bye from Itay.

[@Mikeattempts]

Yeah, you probably wouldn't see original compression levels when only replacing the piston ring, but I'm no pro. Even if the cylinder looks ok, it's probably still a least a little worn. But, as long as it runs and cuts, I would call that a success. :) Thanks for watching!

[@jaymessmall7745]

Exactly the kind of video you look for when you are having some trouble fixing a Saw,. Awesome content and you did an excellent job of explaining everything you did!!! In my opinion a great job. With love peace and saw Grease Jay small

[@Mikeattempts]

Thank you, I really appreciate the positive feedback! :)

[@jedgeled759]

i got one a few years ago,,used it twice and never started again ,even with a new carb and plug etc..now i am ready to tear it down and see what happened,,i can see a little scoring on the piston so now i feel confidant on puttting in a new "c0mbo" with Your video,,,Thanks !!!!

[@Mikeattempts]

I'm glad the video was helpful, let me know how your rebuild goes! :)

[@TheDiscoPaul]

Great video!!! well explained

[@Mikeattempts]

Thanks, I appreciate it!

[@josegodoy9160]

Excelente tu video tengo una igual y no sabía ni cómo desarmarla para hacer mantenimiento 👍

[@Mikeattempts]

I'm glad the video was helpful, thanks for the comment! :)

[@emer3on]

nice video/tutorial/thx,perfect instruction for hobbies.

[@Mikeattempts]

Thanks for watching! :)

[@cartycartyamplifiersalesrepair]

Great video sir really appreciate this video keep up the good work 👍 👍 🙏

[@Mikeattempts]

Thanks, I appreciate the comment! :)

[@daszieher]

Thank you very much! I am going through the same on my 435 and was doubtful of the force necessary on the wrist pin. By the way, your parents might want to get you a new sign where it says "Mike succeeds" 😊

[@Mikeattempts]

Hahaha, I appreciate the sign suggestion. ;) I'm glad the video was helpful, thanks for the comments!

[@MauroCrociara]

I loved it, thanks so much! Can you also show how to remove the clutch?

[@Mikeattempts]

I actually already have a clutch removal video kzbin.info/www/bejne/j6nRnpiPr7WVqMU :)

[@billcasper]

Nice video!

[@Mikeattempts]

Thanks for watching!

[@lupo4084]

Fantastica non la cambierei con nessuna altra!!

[@Mikeattempts]

Thanks for watching!

[@brigtolini]

Hei. Jeg har skiftet stempel og sylinder på min fars Husqvarna 445 xTorq ll videoen din var til stor hjelp. Takk!😊

[@Mikeattempts]

I'm glad the video was helpful, thanks for the comment! :)

[@johnjohnson-sm3yf]

Iv had 2 of these saws . 1st one wldnt run after 2 tanks of fuel and second lasted about 4 tanks . I dropped it at the shop and they said it needed piston , rings ,and cylinder. I have owned numerous husky saws over years and have never had a problem with them until these

[@Mikeattempts]

Hmm, that's strange. All I've ever owned are Husqvarna saws and I've never had any problems either. My guess is that the wrong kind of oil was used in the fuel on this one. With the new piston and cylinder, so far it's running good.

[@gc19901]

yeah, ours failed too whereas 365 still going strong after 20+ years

[@roy-rw9dg]

Great Video. Thanks.

[@Mikeattempts]

Thanks for watching!

[@ronaldgreen7467]

PEOPLE should know that the piston ring can be put on upside down.learned the hard way.

[@Mikeattempts]

Yep, hopefully they'd realize when they weren't able to get it to compress enough to fit in the cylinder. Thanks for the comment!

[@mrglock2313]

Awesome thanks 🙏 I just subscribed 👍👍

[@Mikeattempts]

Thanks, I appreciate it! :)

[@Bluetouchwiz]

Hey Mike - thanks for the video and detailed instructions. I have a Husqvarna 440 that was run mostly with gasoline without 2 cycle oil and it barely has any compression(and.. doesn't start at all). I'm very inexperienced with anything mechanical and I would like to know if you would recommend replacing the carburetor and/or any other parts aside from the Piston and Cylinder? - thanks in advance!

[@Mikeattempts]

I'm no pro but I would guess the carb is fine. I would replace the piston and cylinder and see how it runs. If it seems to run poorly and adjusting the carb doesn't help, you could get a rebuild kit that contains all of the carb gaskets, diaphragms, needle, spring, etc. I have another video cleaning a Husky carb, it's not too hard. Let me know how it goes!

[@kamildrezek6533]

Good job.

[@Mikeattempts]

Thanks, I appreciate it! :)

[@i29countrylifestyle88]

Good video.

[@Mikeattempts]

Thanks, I appreciate it! :)

[@jaswinderdhillon7772]

Nice good help I have issue with my stihl Ms291

[@Mikeattempts]

Thanks for watching!

[@socas_nic]

i only now realised the bottom end is made of "plastic" i never expected to see that

[@Mikeattempts]

Yeah, I thought that was odd too, but I guess it's pretty common with chainsaws.

[@dkat1108]

Thanks great video: don't you have a torque setting for the crank case bolts to the cylinder ?

[@Mikeattempts]

The torque spec for the cylinder bolts, for 445/450 saws should be 13-15 Nm. However, I'm pretty sure they'd be different for each model/brand so be sure to look it up for your specific saw. Thanks for watching!

[@ainodekam3785]

In my opinion a better clean off piston and cylinder make a better job than after market kit . The time is going to see the difference.

[@Mikeattempts]

I agree, the OEM parts will always be better than aftermarket.

[@marcuscicero9587]

good job

[@Mikeattempts]

Thanks for watching!

[@TheConcho75]

So much inf. Thank you so much

[@Mikeattempts]

That you for watching!

[@AaronHahnStudios]

Personally, I Always lay my cordless drills on their side on the bench. That way, they can't fall any further or get knocked off the bench and crack. But, each to their own. Thanks for the video. Oh, btw, Fault, Definitely wrong fuel/oil mix caused it, but quite possible used that fancy hi octane unleaded fuel. Just normal unleaded should be used.

[@Mikeattempts]

That's why I like the M18 battery powered tools, most will stand upright without easily tipping over. Yeah, I think the previous owner might have used bar oil in the fuel. :)

[@alihasan-zg7oq]

Great Vid, Thanks.

[@Mikeattempts]

Thanks for watching! :)

[@philliphall5198]

Nice but I would have put piston tdc and remove spark plug then fill up cly with B12

[@Mikeattempts]

After disassembly, I could see there was little to no damage to the cylinder and piston. It seems like the wrong type of oil was used in the fuel which caused the piston ring to get stuck in the compressed position, resulting in a lack of compression. Had I known all of that prior to taking it apart then cleaning the parts, while still on the saw, could have potentially fixed the issue.

[@ThatFijianGuy]

Thanks mate 👍🏼

[@Mikeattempts]

Thank you for watching! :)

[@normanbfifteen3468]

You know what you are doing... very impressive work. Where did you find the free broken saws experiment with?

[@Mikeattempts]

I appreciate the comment, this was my first time replacing a piston and cylinder. The county I live in has an email list and, every once in a while, I post a message asking for any broken tools people might have. I've been able to save a lot of tools from the landfill and I've learned a TON so far. Thanks for watching!

[@tihspidtherekciltilc5469]

This guy name Ethan Ol has caused people a lot of grief.

[@Mikeattempts]

Hahaha, yeah, ethanol sucks but I think the problem was that the previous owner might have used bar oil instead of 2-stroke oil in the fuel.

[@Granfatherclock]

I got the same Husqvarna chainsaw 440 2 stroke engine. Now I now how to fix it

[@Mikeattempts]

Let me know how it goes! :)

[@tinstaflxp5890]

Agree with comments re 2-cycle oil quality, fuel quality, probably too much oil, so... black internals, stuck ring. (Not that complicated, people: use new hi-test gas and synthetic 2-stroke oil at 50:1. These, at +/- 140 to 150 psi, are comparatively "high compression" engines.) Little quibble... way to adjust ignition clearance is to put a piece of thick paper between the magnet and the leg from the module, tighten down the module, then rotate out the piece of thick paper. Other quibble... Like the other guy, I would have changed out the crank seals just because. These things are sort of a modern comparable to what "Volkswagens" used to be. Not a "pro saw." But not the typical junk that comes from the "box stores." Relatively very easy to take apart and fix (no case splitting, etc.) Parts pretty much available and reasonably priced.... Fascinating that yours was so clean on the outside....?

[@Mikeattempts]

I honestly think it was so clean because it failed on the first tank of fuel. That's the only reason I didn't replace the crank seals. I completely agree that it's best practice and if you already have it torn apart, just replace them. I think maybe the original owner used motor oil or possibly even bar oil instead of 2-stroke. The good news is that the original parts seem to be perfectly fine, they just need cleaning. Thanks for the tip about the ignition clearance and thank you for the comment! :)

[@badeadrian]

Im taking the folding knife, I'm folding the knife, I'm putting the knife in my pocket, I'm going to do a bit of guessing now 🤠

[@Mikeattempts]

Hahaha, yep, most of what I do is guessing. :)

[@ti10to]

Thanks, very helpful video I just have a question how much can I charge to change just piston n rings on one of these chopsaws? Im new on side jobs and I want to have an idea of an estimate charge like i mentioned before just for piston n rings replacement

[@Mikeattempts]

I'm not sure, I'm not a pro, this was the first time I ever did a piston and cylinder. I guess I would call a few local small engine repair shops and ask 'em how much it would cost to replace the piston and rings. Then you can charge a bit less and I'm sure the customer would be happy. Once you've done a few jobs then you could figure out a fair hourly rate and then also charge for parts.

[@dejan9713]

Hi Mike. Thanks for sharing your experience through this video. Please let me know how the cylinder kit is so far? Do you think is reliable? I will really appreciate if you can share some information. Thanks

[@Mikeattempts]

I was impressed with the quality of the aftermarket cylinder and piston. The OEM parts do seem a little better, but they also cost more. The saw runs and cuts great so I would buy aftermarket parts again, if they were substantially cheaper.

[@belsayshootingground]

I think this engine was run once on neat petrol and only the original first run factory oil kept it alive for a little while.

[@Mikeattempts]

Because of the tacky coating on the piston and cylinder wall, I kinda think maybe the original owner tried to use bar oil instead of 2-stroke oil in the fuel. :)

[@belsayshootingground]

@@Mikeattempts oh that’s tragic! 😭

[@theChrisAndHoLLieShow]

Great video, thanks!

[@Mikeattempts]

Thanks for watching! :)

[@nakata3479]

Hi Mike, You should have done vacuum and pressure test before and after, replacing the bearing seal assy is also a must if you have vacuum leak. Regards.

[@Mikeattempts]

I did a compression test before and after. The only reason I didn't replace the seals was because I'm pretty sure the saw was new and died on the first tank of fuel.

[@crxess]

I hate to say it but if it would even start on Choke, Sea Foam would likely have completely cleaned the interior and freed that stuck Ring. We have all gone the route of worst first......... it happens.

[@Mikeattempts]

Yeah, unfortunately with the low compression and the side of the piston looking scored through the exhaust port (even though it wasn't), I made the assumption that the piston and cylinder were bad. Oh well, it was a learning experience and I kept the old parts. :)

[@johnlong384]

Thank you Mike and yes Sir, you've done that before!

[@Mikeattempts]

Hahaha, nope, I swear! :) This was my first time replacing a chainsaw piston and/or cylinder. Thanks for watching!

[@johnlong384]

When I said "You've done it before" it wasn't about switching the pistons but chainsaws in general and yes, I can get the saw taken apart in not time but the fun starts when fiddling all back together correctly. Take care and try to stay out of trouble!

[@johnlong384]

10 -4!

[@sarantisbarekos6287]

Perfect

[@Mikeattempts]

Thanks for watching!

[@larrywarner9314]

Touch oil , improperly mixed fuel and two-cycle oil looks super rich , 50:1 is the mixture not 28:1

[@Mikeattempts]

Yeah, I thought maybe they tried using bar oil instead of 2-stroke oil.

[@Dogonatree]

Probably tried cleaning it up before taking it back to the store. Did a good job cleaning it up

[@Mikeattempts]

Hahaha, I wouldn't be surprised. :) Thanks for watching!

[@Dogonatree]

@@Mikeattempts I’m working on a brand new echo that I accidentally ran bad gas through. Cut a couple trees is all it cut up. I was encouraged to blow it off and take it back to the store as a defect. Couldn’t bring myself to do it. I winced and ordered a cylinder and piston kit Your video was a huge help. Never had an engine fully disassembled. Didn’t know if the piston came out without destroying the clips. Now if I can remember how to put it back together once I get the parts! 👍

[@Mikeattempts]

@@Dogonatree You did the right thing, we need more honest people like you. :) Let me know how it goes!

[@Dogonatree]

Just wanted to follow up, got my parts in. Fixed it up. No left over parts. Can of gas from now on. It’s cheaper than a new saw or parts too

[@Mikeattempts]

@@Dogonatree Hahaha, no left over parts is a sign of a job well done! ;) Thanks for the update!

[@George-bz1fi]

Good, thanks.

[@Mikeattempts]

Thanks for watching! :)

[@doncookbc]

Cheap two cycle oil killed it !! Only use sthil

[@Mikeattempts]

Yeah, something definitely wasn't right. I think there's a chance the previous owner used bar oil in the fuel.

[@michaelschultz5968]

Perhaps somebody ran the motor with wrong type gasoline, normal gasoline without oil in. Nice video, thank you! 👍

[@Mikeattempts]

I think the previous owner might have used bar oil in the gasoline but who knows. :) Thanks for watching!

[@jeffyohe2447]

Soaking the piston in type F transmission fluid might free up that piston ring

[@Mikeattempts]

I kept the original piston and cylinder, but I haven't soaked 'em in anything yet, thanks for the advice!

[@bobdixon4998]

Great narrative. I watched another take apart a 435 and put it together with no narrative and sorry music.

[@Mikeattempts]

Thanks, I appreciate it! :)

[@weofnjieofing]

Castor oil is definitely the reason for all that gunk.leaves a varnish behind that it tacky and produces a lot of carbon when burnt. Could be Maxima 927, Castrol R40 or A747,, Klotz Benol race castor. Most likely surplus race gas or the guy likes the small of castor that’s why it was used. Castor should only be for race applications where frequent rebuilds are performed. That piston and cylinder would still be serviceable. Just need to dissolve the castor gum from the parts. An ultrasonic cleaner or strong solvent will do the job.

[@Mikeattempts]

Dang, I've heard of people killing saws by not using 2-stroke oil at all but, knowing you need to mix the gas and using the wrong oil, that's nuts. I kept the original piston and cylinder and I think you're right, a good soaking should make 'em reusable. Thanks for the comment!

[@devirezxz]

@@Mikeattempts I think you could use some cheap engine flush, it shuld cost about 5$, it should dissolve all carbon deposit and you'll have perfectly new original parts ;)

[@Mikeattempts]

@@devirezxz Yep, I haven't tried it yet but I think you're right! :)

[@ronaldgreen7467]

Very in depth video but I can't get my muffler of

[@Mikeattempts]

Yeah, those muffler bolts can really be tough to get out sometimes. I'm no pro but you could try heating 'em up a bit with a torch then cool 'em down quickly with a few squirts of water. That might provide enough thermal expansion and contraction to be able to get 'em out. Another thing you could try is to ever so slightly tighten the bolts and then see if you can loosen them.

[@vadenton8735]

Thanks

[@Mikeattempts]

Thank you for watching!

[@oldbowsaw9001]

Milwaukee for the win!!!!!!!!!!!!

[@Mikeattempts]

Yep, thanks for watching!

[@paulnielsen8037]

Using incorrect type of oil in mix , any old 2 stroke oil is not good enough these days must a good quality hi speed , air cooled 2 stroke oil, if a 2 stroke oil for a outboard engine was used engine would not last long , as chainsaw air cooled engine temp would cook oil used (outboard 2 stroke ) and could also end up being like a jelly like substance inside engine

[@Mikeattempts]

That sounds like the most likely culprit. It seems like the oil was cooked and it left a slightly tacky film on the piston and cylinder. Thanks for the comment!

[@pdevonport7266]

There's no difference between marine 2-stroke or air-cooled chainsaw 2S oil. Marine 2-stroke oil has a detergent that breaks down in water to stop clogging the exhaust manifold. Water cooled engines can easily run at 100 to 1 + ratio and that's the only difference. This engine was obviously run-on chain bar oil which would explain the tarring.

[@fredpope8293]

I use 2 stroke marine oil in my Shindaiwa and Stihl for past several years....the saws literally scream like a raped ape. My experience has only been very positive.

[@notmyname3883]

@@pdevonport7266 I don't know about that. THis isn't the first time we've been told not to use outboard engine oil in chainsaw fuel. I used some and it killed my Husqvarna 137, a great little saw for years. I'd say which brand but I've forgotten at the moment. IT was all the corner gas station had in the moment when I needed 2-stroke oil. I will never make that mistake again. Why chance it when stihl and husqvarna make good reliable natural and synthetic oils for only a few pennies more than the cheap outboard stuff?

[@needsomehike]

Which oil can I use to lubricate the crankshaft bearings? (zoom oil is not available where I live). I am going to use engine oil but which Viscousity is recommnended?

[@Mikeattempts]

I'm no pro but at 7:48, I just used SAE 30W oil to lube the needle bearings. I've also used 00 grease on the needle bearing under the clutch so I'm sure either would be perfectly fine. Gear oil would probably be another good option.

[@jamesgeorge1709]

Some Marval Mystery oil might have saved you some money. I swear by the stuff. 9:16

[@Mikeattempts]

Yep, MMO is great, smells good too! :) I kept the original parts, once I realized they weren't damaged, and cleaned 'em up.