Stihl MS660 or 066 Piston & Rings Installation: A Complete Guide
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- เผยแพร่เมื่อ 10 ก.พ. 2025
- As Taryl's 2020 month-long Halloween video series continues, we give you "Blademan & Throttle In... The Silence of the Blades". Taryl goes over how to successfully and properly install piston rings and more on this Stihl MS660 chainsaw (will also work for the 066 as they're the same setup). To save some money, Taryl uses aftermarket as well as OEM Stihl parts on this rebuild. He performs a leak down test as well and shows you all the info on replacing these rings. Check it all out here for all the info you'll need on rebuilding your saw.
Prior to, and after the fix, Blademan & Throttle take on a local mower murderer "Dynamark Dan", who's been mower-napping mowers and stripping them for parts. It's up to Blademan & Throttle to bring this criminal to justice in another funny, yet scary, Halloween-themed how-to video from your pals at Grass Rats Garage! And as always, There's Your Dinner!!
Check out Taryl's Halloween-Themed How-To Videos Playlist for past years' Halloween videos based off classic horror movies and originals! Also check out the Blademan & Throttle Playlist for all those videos as well.
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My Dad worked for ASPLUNDH TREE SERV. for 37 years ( IN THE FIELD ) & was VERY " IMPRESSED " on your rebuild of this saw. He also LAUGHED HIS ASS OFF at your humor as you made this GREAT VID. SIR TARYL, T.Y. Henry from N.E. PA. OH 1 MORE THING, HE ALSO SAID " THIS GUY KNOWS WHAT THE HELL'S HE'S DOING ".
That's what I love about this channel teryl knows what the hell he is doing and the way he shows and explains how to do things in a very funny way, is what makes this channel awesome.
A great practise in removing piston clips is pull a length of rag through the wrist pin first.
The clip never flies away. Great video again Taryl, keep them comming!
Great idea.
I really appreciate the time and effort you and your crew put into these helpful videos for us! I've worked on equipment since before I was a teenager, managed a fleet of heavy duty trucks and at the age of 75, I learn something new from every video you produce! Thanks!
Thank you.
I second this. This has helped my fix ( or junk) obsolete engines.
I've lost count of how many times I've watched this video - never really been a Stihl fan but wow - the noise it makes when it fires up, idles at the right speed and revs up sounds incredible. Love this channel.
I know a video like this takes a lot of time and effort . Thanks for the info and entertainment . Taryl and your cast deserves an Emmy .
I have just replaced the piston and cylinder head on my 660 and without this video it wouldn't of been possible taryl. Thanks very much mate from scotland 👍🏴
I found something better than a squirt bottle mixed with soap and water. And most hardware stores in the plumbing section they have this blue bottle of liquid with an applicator under the cap and it's used for detecting gas leaks.
I had picked some up for a project I was working on. After I was done it's sat on the shelf for a lot of years. When I was running new compressor lines around my garage I had a leak somewhere. I tried liquid and water and a squirt bottle could not find it. That's when I saw the blue bottle and figured what the hell. Almost immediately it showed me where the leak was. Since then I have used the hell out of that stuff. And also works great on finding a leak in your tires. If not expensive at all. One large bottle could last a lifetime depending on how much work you're doing and what you're working on.
I enjoy watching your videos.
Happy to have found your channel. Saved me a ton of time, money and few saws I thought were scrap. $400 quoted to repair, got em running for under $50. Much appreciated.
The 4K quality is unbelievable. Taryl you and your crew have come a long way! Great job and take care!
“I’ll go back to my couch and do what I do best...nothing.” 😂😂😂
As I watch this drinking coffee at my kitchen table... Brutal
Thomas Bonnell I laughed my arss off
The old joke.
My wife asked “what are you going to do today?
I said “nothing”.
She said “thats what you did yesterday”.
. I said “ i didn’t get finished”.
@@nerfmadeeasy ×wwwwwwwwwwwwwww×wwwwwwwwwwww×wwww×
42:18 haha
I absolutely love watching your videos I work on small engines like this and mower and things and I am 11 im about to turn 12 next month and I have great interest in these things so keep up the great work and thank you.
Excellent video. Been working on chainsaws for years. Replaced a ton of top ends. Very well thought out job. Right down to the tip about the mufkin cover bolts. Well done sir. Pro tip: strip the screws from every junker saw you come across. They come in handy later.
Thanks for all your great videos. A special thanks for cleaning this chainsaw before working on it. I can't believe how many pull the upper without cleaning first. If you're not replacing ALL bearings, you really need to clean first.
Taryl you make it a lot easier to follow and understand the workings and operation of saws, I'm able to follow so much easier than most who don't seem to be able to simplify it all with Thanks Steve ..Australia
I just want you guys to know you made an engine rebuild seem simple, and that is hard to do. That's why I watch your channel, great educator... You asked what causes scoring on a piston and knew the answer (well 1 [lean]) because of your previous videos. I'm definitely learning, thank you.
Good work! I have a pair of Stihl 034s and am replacing one's engine with an after market kit. After watching your wideo I ordered the plastic ring compressor kit and a set of genuine piston rings.
45:45 thing is there are leaks and seals that can seal under compression but vacuum will make them leak.
The vacuum belongs on the outside of the space shuttle 😉
I gotta tell ya Taryl, the sound track special affect is 2nd to none. You or your son's are experts in videography. All through the video I particularly enjoyed all the noisy gimmicks, tweaks, and twangs... Only one bad thing about this video though, it ended. I just realized I haven't been subscribed to your channel but that changed tonight. And there's your dinner !
Tyral love your channel iam a chainsaw guy and iam like you I never check vacuum think it's a waste of time. Never had a issue in 20 plus years of building them . Love your show
It's so relaxing watching you take apart large metal puzzles and putting them back together and you celebrate... you guys are awesome!!
I laughed about the wife saying "Just buy another chain saw. Stop watching that hillbilly saying how you can rebuild one, and you messing it up and cussing".
Best part of the video 🤣👍
Rebuilding is the way to do it, less waste, things now, especially battery things aren't made to last, even though they're alleged to be better for environment, pft.
@@inoutdoor4211 maybe I'm misinformed but tool batteries last 100x longer than they used to. in terms of power, charge cycles, everything has improved by leaps and bounds.
@@chrishayes5755 Indeed, but it's still a long way until a battery chainsaw for example can replace a 70cc+ gas chainsaw.
@@chrishayes5755 Back in the 1980s Stream Light used Nickel Cad NiCd rechargeable batteries in their flashlights and they would develop a memory if only partially discharged and recharged. It was very common for police officers using these flashlights to turn them on at the end of their shifts to discharge them completely before charging them. They then went to Nickel Metal Hydride NiMH which lasted longer and no longer had a memory. The newer Lithium Ion seems to last about the same length as the NiMH, but they don't dim out like the Nickel based rechargeable batteries did. They lose maybe 10% of their brightness as they discharge but then shut off like a light switch when they are discharged. Lithium supposedly can be recharged a greater number of times than NiMH, but both have an estimated life of about 5 years.
I've used a magnet tool on a stick that fits inside the wrist pin. Helps a ton when putting the clips in. Helped me reducing the clip flyaway problem 😁
Hey Taryl, I absolutely agree about the heli coil inserts They are the best. The sleeves suck. I’ve worked on small engines for 35-40 years. I little trick I use when tapping the plug hole for the insert is I put piston to bottom of stroke and will blow shop air ( medium Pressure) into exhaust port while tapping. Chips blow out as they are cut. Put your safety glasses on. 😲.
I enjoy all your vids. And there’s your desert!!
Thank you for these wonderful videos. I enjoy your teaching style, you cause me to think outside the box when effecting repairs on my equipment.
Great video, Taryl. Learned a lot as well as it's ok to curse when things don't go your way. Have you been listening to my wife "give me advice?" You sounded just like her.
Mr. Cameraman deserves a lot of credit. He did a great job filming the rebuild as well as putting in all the appropriate background music and noises. Also, his ability to get a view when your hands are in the way deserves special mention.
Looking forward to your next video. Wouldn't miss any of them.
1 hour and 22 minutes... Taryl and the gang making feature films now!!
Very informative and entertaining
Taryl, on those thread inserts you don't like I usually take a punch and put a few divots on the outside of the insert where it meets the material and if I have it apart like you do there I do the inner side as well. Just a couple or three hits around the insert is good and adding some high heat loctite helps a little more. Never had one back out doing this. If I can only get to the outside I'll add some all the way around to help keep it locked in. Probably overkill doing that but it works well for me.
Gotta be a high quality saw to put this kind of time and effort in. Great job, you’re the best.
You have the best tutorials on small engines and your funny as hell, double wide is also good , but u are the best. Keep it up . I'm a chainsaw enthusiast
Amazing how you give enough good info to help get the best out of aftermarket parts
Keep up the good work. Very helpful, useful information
Thank ya'll.. you keep me in stitches so i keep haf n ta back it up... I have an older MS660 runs great and i lover her.. i may haf ta put those rubber bumper bushings on it... I do all my own work on all my small engine stuff... I have pressure washers, several other chainsaws, tillers, weed eaters, wood splitters.. and i refuse to take my stuff to the shops out here in Kentucky... After watching your start your own business video... I'm seriously thinking bout it.... Thanks again pal...Keep it up!!
I was blessed with a clicker type elbow , great for torquing parts down.
That’s your spine that you’re hearing.
@@SlyDellian 😅
Blademan and Throttle knock another one out of the park and Taryl saves another pretty sweet Stilch chainsaw. All in a days work for the Dynamo Trio. The crowd is going WILD !!!!
I watched every minute of it Taryl and great crew. And I have loved it!
And I have learned much. Thank you all as well as mr camera man did really well for as much as you had to flit that saw around...... Thank You from BQ Saginaw, Michigan
Man awesome video taryl !!! I got 3 of em sitting in the barn that won’t run and I’m definitely going to go thru em now. I owned and operated a logging and chipping company for 10 years and have over 10 saws sitting in my barn that need fixing. Husky’s and Stilts
Just ordered a cylinder and piston kit for my stihl ms290.. took it in to repair shop because I didn't want to do the work myself, dropped it 9f 5 months ago, texted today saying it would cost more to repair then to replace. Offered me $40 for my saw. Looked up the replacement parts and they are only $35 for the whole kit.i don't mind doing the work just didn't want to do it on a saw woth less then 50 hrs on it. Thought I'd leave it to what I thought was gonna be a simple repair for them. Have rebuilt cars and repaired body work. Can't image its much more different if it comes apart it just goes on tye same way. Wish me luck. Lol
“Them chips are gonna fall in there!” 😂 the voice of every old timer I’ve ever heard
Nice rebuild job. You can sure save some money using aftermarket parts. I hope they hold up well. Nice to see Blade Man and Throttle again.
WOW. So impressed at the amount of knowledge you have in your head.
A lot of guys will pick up a cold saw and go straight to cutting without waiting for a little warm up. Can be a cause for a smear on a piston/cylinder. Clogged cooling, phase separation, old fuel, cheap mix, etc the list goes on. Yeah, saw shops will laugh you out the door if you bring in cheap saws as they have been burned on repair, but sometimes it is a simple problem and worth saving. Time is money though. A far as sparkplug repair goes, heli-coil makes a insert called sav-a thread and another product is called timesert. I can't tell which one you don't like.
I have much respect for you brother I remember in your earlier videos used to cuz every once in awhile and remember the video you said Junior maybe we shouldn't dress. And you have never done it since are damn good man and honest to your word thank you keep the videos coming.
These guys are great! Not only entertaining but you actually learn from Blade Man and Throttle's videos.
I love watching your videos. You made me start a channel and a small engine shop. Im glad I just did it. Keep it up
ive had really good luck with hutzl parts. Scratch built 6 or 8 of there clones and fixed probably same amount of "box saws" when the dealer quotes how much it will cost to fix em the boss says "Throw the parts in a box ill just buy a new saw"
Good luck with the Farmer Tec, I like the Meteor piston and cylinder kits, they come with great rings. Glad to see a good chainsaw video!
Awesome video. And so true about husbands and wives.i have a 22 year old 066 to rebuild. Kinda nervous about the whole process.
Love these in-depth lengthy videos. Very educational and entertaining
If you are willing to spend money on quality power equipment, be willing to spend a few more dollars for quality fuel/ oil for said equipment. Save yourself and your saw.
Great mechanic ,lots of knowledge love watching, this man can fix anything keep it up.
A Small Engine Mechanic told me Years ago to Always add a little Extra Oil to Gas Mixture, he said that it will Lubricate engine much better--might Fowl Plugs some and smoke more but it is Good For Engine Life...
Taryl- the reason they use round wire clips with a chamfered end wristpin, is that if the wristpin tries to walk out the side, the chamfer forces the wire into the groove, with a circular style if it walks sideways hard enough itll jump it out of the groove.
Can I just admit I really like the Blade man and throttle skits? Funny to the core!
man you is the real deal you tear it down and build it with your eyes closed great job
Great video as always! You always make things look easier than they are. I would of had to rebuild that carb if it would of been me. That’s just my luck.
Good job taryl. Now I see why it took so long. A lot of work! I love them Stilt saws
Taryl I built a chinese 660 and a 1/2 a tank of fuel later my upper ring failed and wiped out the unit. Kind of heartbreaking..but I bought a new (big bore)hyway cylinder kit and the saw has paid for itself a few times now. Hardest part of the build was probably the safety spring. Watched the video and learned about that tube technique. 1:07:36 You are the MAN. Thanks a million.
I think I’d just buy a factory Stihl jug even though they’re more expensive. If the rings with the aftermarket jug are junk, and the spark plug threads are weak how can you trust the quality of the chrome plating inside the jug?
He answers that. Did you see the part of the video where he says "“I’ll go back to my couch and do what I do best...nothing.”
Pro-Tips for Newbs here: #1 -- you don't have to remove any of the carb or carb-area to remove cylinder....once the cylinder-bolts are free and the cylinder can be moved, you can finesse that intake-boot on&off of the cylinder (unless your hands were just HUGE I guess? For me it's easy-as-pie but admittedly I have smaller hands)
#2 -- Piston-ring compression during install: I didn't yet order ring-compressors for my 1st 660 top-end so I improvised using a big zip-tie (handcuff type, though 1 maybe 2 regular zip ties would work just as well), anyway this is not only easy/simple/viable but, watching guys use compressors - which require a hand to compress them, which the zip-ties do not - I cannot help but saying my zip-tie method is superior (and of course the cylinder slides the zip-ties downwards off the piston & you just snip them, use good sharp clips so you don't risk getting plastic chunks from your cut :P )
That said, I'm equal parts excited & nervous to remove my carb & mess with it (for the 1st time) but, with (and only *because of*) this channel and this video specifically, am confident in doing so!
A++ content man, thank you, this is *the* authoritative 660-workshop video IMO, if I could only have 1 660 video from youtube it'd be this one (and, ironically, it's one of the few youtube URL's that gives youtube-dl a problem / doesn't let you rip the video file :P )
That “bommm-bummm” sound effect is hilarious. I dont know why haha
thank you for what are doing very nice i have a question. i have ms 660 if the in saw in idle but the chain keeps running what dose that mean shall i change the clutch or change the drum only
What did I miss? Why are we Heli-coiling a brand new cylinder? Push the first wrist pin clip open side straight in past the ring groove, insert wrist pin to square up the clip and push it until it seats into the groove. Just like checking the ring gap on a rebuild. The best education (oil) is always the most expensive. The exception is Taryl's videos.
He said copy cylinder plug threads aren't good so he helicoils them to make sure
42:22 - That part you were sounding like the guys wife was hilarious!
Thanks for the long and detailed repair taryl!
The best mechanic and thank you for cheering your knowledge 👍
Besides all of the entertainment, you’re one heck of a mechanic. Well done. As usual.
Today for relevance we Jump to:
02:45 Description of job.
18:48 "Throw the rings from the kit in the garbage."
Always buy Original Manufacturer piston rings.
Question....another chanel on here did a simlar job on a simlar saw and they said the arrow on the piston, points forward. Ill see if i can find them and tag them. But does it change from saw to saw? Does it damage the saw if the intake and exhaust side are swopped on the piston?
Hey Taryl.. Thanks for the great video.
I'm looking at the Farmer Tech kits and I notice there's a 54mm bore and a 56mm big bore.
I measured the inside of my old cylinder and got 54mm. I assume these two sizes are not interchangeable. Do you know anything about how the two different sizes came about?
My saw is a MS660 Magnum.
The ms 660 has standard 54mm (91,6 cc) . in my opinion, leave it standard, i've got the same chainsaw and has enough power, my opinion
Taryl ur so good at what u do if only I could be as good as u Are the goat of small engines
Y’all make a great video. I’m really enjoying and learning! Love the pressure washer trick and attention to teaching detail 😁
I've tried a few of the farmer TEC carburetors and didn't have any luck with them. one had the low and high side threads stripped out.
So this synthetic is better for the old chainsaws and the new chainsaws? Cuz I have an Old echo and I'll start using the synthetic just cuz you said. But I have some new chainsaws like a Walmart deal. And I'll use the synthetic oil in there from now on. But is it good for the old chainsaws too?
I beg your pardon, I don't watch from the couch. I watch from bed. 🙂
Yes, and I'm quite sure that some people watch while on the can too. Trouble is, sometimes after dropping a duce, you find your all out of crappin wrappin.
My Lawnmower just disappeared while I was watching this. Crime never sleeps! 🙂
"alright. I can go back to the couch now and do what I do best, nothing." lmaooooo
10:00 Yes it does make it nicer to work on. That is why I was very surprised that you did not power wash The 1970 Hahn and especially the 1974 Sears tillers. The video production would have been significantly better as well. Just a suggestion my friend. I loved watching them though and I love your videos, thank you for making them.
Did a hell of a nice job I was looking at buying a good you saw used still has a good market that’s why they’re value even being used but I found a Husqvarna 257 that I was going to go look at are they pretty good saw??
I have an 066, very nice saw. Also have an 038, my neighbours told me they have an 037 and my saw being an even number is inferior to their odd number saw. Have you an opinion about this or is it just village idot rumors? I bought mine new in '97 and it still does everything I want it to do, and for really big wood I have the 066. That's also an even number, go figure.. thanks bloke.
Taryl is the best! I wish he had a video of a Homlite 8800 I'm trying to repair.
This is like a reverse 'This ain't the space shuttle!'
I like to test pressure and vacuum. The seals will sometimes hold pressure but not vacuum therefore a vacuum leak. Have you tried Hyway cylinders I heard they are good
Just put a hyway big bore w pop up on my 660...3 tanks thru n so far so good..some bb had Freeport issues..finding a combination that didn't freeport was difficult
we run 2 strokes racing engines at 18,000 rpm! We use klots teknaplate. With good old bean oil! 800cc Koneg 4 cylinder 18,000 rpm & 170hp in a 12’ hydroplane! 100 mph on water baby!
Very nice work. Only thing I would add is that I oil up the ring lands b4 putting the jug on.
BTW. Your crazy Dr character sounds amazingly like Scotty Kilmer!
I had that problem with Ms 201tcm saws and it was a big arbor shop you have to use the Wright oil thay run at 14000 rpm
Good one mate hope everyone is ok.. another great video
Thank you for this, I recently used this video to replace my cylinder & piston on my saw. I have a question though. When I had the saw torn down, there was 2stroke oil in the bottom end by the crankshaft. Is that normal? I assumed it just ends up there during normal use, but, then again, it could have slipped past the worn down rings. I cleaned it out & did not pour more oil in when I put it back together. I haven't run the saw yet in order to allow the rtv sealant to cure.
Two stroke engines draw the oil-fuel mix up thru the crankcase into the cylinder via the ports on the cylinder wall. This is how they lubricate the crank, get away from having valves, and use a fuel mix of gas and 2-stroke oil. So, yes, the crank will have bits of oil in it.
I have a husqvarna 136 that the screen was packed full of saw dust and luckily it didn't burn up the top end. I also blow all the saw dust out from around the clutch safety break and from around the cylinder
Wate till you get a ms194 in to the shop first thing you do is pull the recoil off and you will see pom prons by the coil and makes the saw run hot I have 3 of them to rebuild
Thanks for the help, I had my rings upside down, and arrow was pointed some other way
Great video. I worked for Quaker state and suspect the qt of oil referenced was TC-W outboard oil. Sold often in quarts as it would mix two 6 gal marine gas tanks. NOT intended for high performance air cooled chainsaws. Ashless additives best suited for cooler running water cooled engines. QS made or may still make a specific air cooled oil. Mostly sold in small bottles. Low ash formula must better suited for high temp use.
I need to install a new carb kit with all new lines as well as a new coil assembly. You called it "all that other stuff". Did you/would you do a video on the back end disassembly/reassembly on the 066?
What pressure washer/PSI do you use/recommend for cleaning tools? I really need to start cleaning my tools better than just a hose and air compressor so I'm building a little hutch to house the compressor and pressure washer and anything else I'll need.
Should the new rings be lubed?
I like to set those Circlip so the closed end is at the bottom open end at the top of the slot. The G type are the Bestserest and easier to put in.
My town needs a guy like taryl who can rebuild a 660 in a hour and 22 minutes
Absolutely brilliant. Thanks guys, great repair, great video.
Hey I'm back. If you put that wristpin clip in with the screwdriver, you can poke that into your thumb.
Help me find that chunk of meat that I just gouged out.
great tutorial brother, thankyou
I had the same problem on a ms661 you have to get off all the gray on the case it gets soaked with oil
I do a lot of still and husky saws never rebuild one with out new intake boot pulse line and seals