There is no more satisfying sound than the click of a screw or bolt finally letting go.

Hi Mustie1 Once again another Sunday made more interesting. You've become my Sunday morning routine I always look forward to 😊👌

Looks to me like someone put in a spark plug that was too long, it hit the edge of the piston and that did it in. Mystery part might be a compression release for starting. Thanks for the video.

"I decided to man up and hit it with my purse." Classic!🤣

Torx and Loctite. What a nightmare. Edit to add: My bet it was laid on its side running while the user was trying to assemble the parachute harness to put it on his back. Running on its side without the oil dipper means there is very little getting splash lubed, and the side of the piston that gave way would have been the unlubed side.

a little trick I learned working on firearms and laser sights, when encountering loctite screws, especially them little bitty ones that are hex or torx, put your driver in the screw head and using a pocket torch, heat the shaft of the driver till it's really hot. that will usually break the loctite loose and you aren't putting heat directly on the part that might damage surrounding parts and pieces. the heat transferes down the driver to the screw

When I saw the spark plug come out, my first thoughts were the piston had come off the conrod, and slammed into the head, but the valves were moving, so that ruled that out, Over the years as a motorbike racer, I have had many high revving 2 and 4 stroke engines drop a skirt from the piston, usual cause is a heat seize, that weakens the skirt, or a flaw in the machining of the piston, either way, once the skirt breaks away parts of it usually end up in the crank carrier bearings, and even if you rebuild it the bearings become the weak point and fail, great video as usual @Mustie 1.

Enjoyed the teardown, Mustie! Always interesting to watch you do the "play by play" in your repairs!

Even if the outcome is not what the viewer may be looking for, someone can always learn from your videos. I appreciate all of your time and effort to educate us “garage mechanics.” Thanks Mustie1. Always enjoy wrenching with you.

I went thru 3 Poulan leaf blowers manufacturer guarantees them to stay together for 50 hours of run time on average which in most cases will surpass their warranty time and usually takes years to reach. Anything after that is a Gods Send, HA! with usage. The 50 hours guaranteed runtime is probably the same for these and wear and tear just destroys them eventually.Eight years isnt bad actually probably landscaper may have used it alot. Should be an easy fix like always its all labor and many cant be bothered and put it at the curb, thats the American way. Hey its good for the economy buy another one,LOL! Great Video as always....

Ahhhh, my Sunday morning is complete! Thanks again for for sharing these videos!

25:17 It's common in super small engines to have a full floating wrist pin retained by a pair of teflon buttons. All of my RC 4-strokes are built this way as are some of my 2-strokes.

That looks like a tb4bp ec. I bought 2 when I started my lawn care business, I found them on clearance at Lowe's for $100. One crapped out straight away but I still have the 2nd and it still runs great. Although they do have serious issues with the carbs. Love the videos keep them coming, I have learned a lot about small engine repairs from watching your channel.

ALWAYS THE BEST !!! You always make me feel like I'm right there with you.

The decompression setup is missing a piece. I think it came apart and took the piston with it. That would also explain the banged up screws.

Shaking it like it's the last quarter in the piggy bank! Lol

Thanks for letting us in your shop again Darren!

Thanks again, for taking us along for the ride, very enjoyable 👍🙂

Thank you for all the great videos, after watching them it gave me the confidence to do some of my own vehicle repairs.

The cam gear spring thingy looks to be a decompression mechanism, although it appears to be missing the bit that pokes out to do the actual decompressing. Odd.

love the programs, learned a lot, saved a few dollars by watching the videos first. Keep them coming, I try hard to not miss an episode.

I found it amusing when the valve cover screw was thrown into the magnetic tray and stood straight up.

Good learning session. Thanks for the look! Enjoyed.

I really enjoyed watching you breaking that engine down.They are very simple but yet interesting with webbing for reinforcement and the oiling symptoms.Another great video on the books.

Eric O's torque multiplier noise is "C'mon Baby!" RIPs leaf blower.

Love the way you take the time to put thingd into terms that everyone can understand

Well you certainly had some chasing to do to fully discover the fate of that little engine. My theory is poor/cheap casting on the piston which failed. The vast majority don't so but the odd ones that do Meh they'll just buy a new one, never know what killed it. If the orig owner deleted the filter and rigged the netting, they may even blame themselves for the failure. Looking forward to free pile season!

Even though sometimes one of them doesn’t come back to life, you always teach us something. Love your vids. Keep it up. (No pun intended).

I've crushed the handle off screwdrivers to get a long reach "bit" to put in a drill chuck.

Love my Sunday mornings watching Mustie working on someone else's junk. One of the few times that it "didn't" run, but still a great morning video before I head to the shop to weld some metal on my beetle. Thanks Mustie

Thanks Mustie1! Great shop time this week, thanks for having us over.

You always give it your best shot. Thanks for another great video. I always learn something. Thanks

I use Torx keys - like Allen keys, but with a Torx end - haveing the 90 degree bend means you can get much more leverage than you can get with the screwdriver handled ones

I learn a lot about taking these things apart and fixing bits. Even more important for me, I have learned a lot of good maintenance tips so that I will never have to tear things apart and repair them in the first place. This is some of the best entertainment and education I get!

that was a great autopsy. Enjoyed the disassembly on that. Never hade one apart that far. Thanks

I trash-picked this exact same model last summer. It ran but wouldn't rev. Thought I had a quick fix with a cheap new carb. Turned out the piston and wall were chowdered. I had a hunch you'd find something similar. Just glad I didn't pay good money for this piece of junk. It was fun to watch you tear down the same machine. Thanks!

Good morning Mustie, always look forward to Sunday morning with Mustie 1. My guess was debris came in the air passage. Take care and be safe. 👍

It's always a good time watching you work on stuff. 😄

It was fun to see it being pulled down thanks for the video all the best to you and all your loved ones

“It’s getting smaller……………… that’s what she said” Had me cracking up!!!!

Always love your videos very entertaining and very educational, learning a lot!!!! Please keep going!!

Back in the day use to put screw driver handles in a deep well socket for more torc . Plug socket to manual impact and hit with a hammer. Screws broke loose 90% of the time.

The failure was directly related to it being designed to sell for $179 at WalMart.

just want to thank you for all the knowledge. I don't have a lot of money. came upon a free curbside troybilt with a Honda motor. air/fuel/spark. cleaned all three, carb/air filter/spark plug. now it turns on with a single pull!!

You make exceptional videos! What you work on is interesting, but your methods and camera sense are mesmerizing! Thanks for sharing! (I think the mystery component is for start up compression relief)

Again / fantastic content. Always learning when I watch your work. 👍

i remember Troy-Bilt being the lawnmowers i'd see advertised on tv in the 90s when i was a kid.

Your content blows me away 😂

You are the doctor Frankenstein of dead motors. I would have bet money on hearing this one run again. A rare autopsy but fun to watch.

I figured it was the top of the piston that broke up, but the shattered bottom piston skirt was a surprise. No giggle of success on this one. 😁 Cool teardown!

Could be a counter balance. Love your channel and I learn a lot about small engines.

I love these small engine repairs!

Another great one Mustie. 👍🇬🇧🔧

Awesomeness!! I love these videos that you make.

yesser... another awesome sunday morning show... Tanks a lot

The sheet metal plate is what helps oil the top end. It catches oil and slings it up the push rod holes.

There’s a lot to learn by watching these programs

I wonder if the wrist pin seized for just a moment and as the crankshaft continued around it tried to yank or push the piston sideways in the bore breaking the piston skirt off. Probably not but I've always been curious if that can happen. Thanks for reading! If you are still with me I Hope You Are Having A Great Day ! And I Hope You And Your Loved Ones Are Safe, Healthy And Happy!!

At least we know how to take one apart now. Good stuff!

Now is when my wife says “ Whatta you going to do now” LOL LOL a great video

Love watching you 'fix' stuff! 😂

Great video glad you posted keep them coming thanks

Even when it doesn't come back to life you have cool videos.

It was a valiant attempt Mustie, you can't save them all. It was a good educational video.

Thank you for sharing. Enjoyed 👍👀

brilliant episode . Worth the wait as always ! thanks mustie1

That is the model that cured me from buying gas powered small yard machines. Used one season and nothing but problems after that. Took it to troy built authorized repairman several times, could not get it to start properly. the first time he adjusted the valves with very little effect after that he said nothing was wrong with it. The electric starter does not spin the engine fast enough to get it going. I still have it in the back of the garage if you want it at 04967. All battery powered for me now.

I really like this headless style, no head gaskets!

Nothing a little JB Weld can't fix!

I love your videos, I've been a mechanic all my life. But I always learn something from you Thank you for your awesome content best guy on youtube, Rock on. P.s I thought the ring had broken :)

13:00 I use the 1/4" hex bits and extensions with the impact to reach those hard to get to fasteners/bolts.

Finally, a Sunday morning show to replace Jimmy Houston fishing. 😁

Mustie you are forgetting that age old trick of a few sharp wacks with a hammer on the end of the screwdriver to free up those stuck fasteners. Never the less you got them in the end, good show.

Can't win em all!!! Sometimes they are just destroyed and sometimes ya get lucky! Love the videos Mustie!

I bought the same set of Milwaukee impact + drill drivers 2-3 months ago when Home Depot had a mailer or email come out about the deal. Fantastic tools. I removed the belt clips since as a nonpro sometimes mechanic household DIY person I'd never need them. One cut my wrist with the torque while using it at an odd angle.

Been there with a free $450 blower, still in a million pieces. Always enjoy watching!

Great video Mustie

Excellent. Thank you.

ok mustie did you see what I just saw you do ???? when you threw that last bolt into the pan it landed right on it,s end standing strait up !! ! good toss my man !!! 1 in a million !!!!!

Whatever it is Mustie1 I think it's a common fail point - I trash picked my same exact machine with the same exact crushed spark plug about 2 or 3 years ago. I remember watching your videos & checked some of the basics, set the gap & she's been running fine ever since without ever looking down the plug hole. I know what I'll see now! LoL... When she does finally blow up do you want it? I could use the blower nozzle in the meantime... Thats what she said!

best way to start my sunday , thx mustie

Great video musti1 keep up the great work 👌

Top of that piston looked oddly colored .. my guess is water without the air filter, and that froze and broke the piston ... first startup in spring would finish the job ... Ran fine last year!! Thanks for sharing 🇨🇦

Small Vice Grips on the head of a screw like the ones holding down the cylinder can easily break the torque without damage and then you can use your hand tool to unscrew it. Works great on old Carbs too.

Awesome as always

Wow mustie1 I just spotted something interesting on that blower the back fan wheel what actually work great for a water wheel for alternative power looks like it has the right men's in it and everything??? I guess if it'll push are it'll surely turn by water? Maybe a future project, who knows right. Mustie1 you always come up with something interesting to watch that is for sure. Hope you and your family are doing just great many blessings your way.

I believe that cam gear cover is a simple oil pump that grabs oil and then slings it up through the hole right next to the teeth on the cam gear ...if you look at the cam gear there's a hole on it and it can build pressure but can only let the oil out when the hole is facing upwards towards the push rods and rockers.

Just enough chaos going on to get my ADD going. My bench always ends up like your bench in this video. I love it! You could always build a big jig saw or filing machine. ;-)

If you didn’t live so far away I’d swear you were working on my Troy-built blower that blew up under warranty. I didn’t have tear it nearly as far apart though. I took a bore scope and just looked through the spark plug hole. Mine the whole piston was in the lower case. The only thing in the cylinder was the rod and wrist pin. Troy built replaced under warranty, but it was a bit of a pain.

Casting flaw on that piston is my guess.

😎👍 Keeping me company while I work on my Mini. 😁

Some people were just not meant to own tools, lol. Great Vid as always Mustie1. Thanks :)

There comes that time " if in doubt throw it out"...nice autopsy in any event Dr. Mustie!

Pist'n'broke- the story of many peoples lives!

I learn so much from you

Just a oddity of natureLOL a lemmon those things are usually bulletproof!! Good job brother!!

Here is a tip, Take some of your more common hand drivers cut them off long grind the shank to a Squair so they will lock into your drill/ impact chuck. Love the channel Good Job!

Been qatching dor few years more full vids please

Thanks Mustie1, we enjoy these autopsies

You so need the $80 dual camera borescope that Eric. O just previewed on SMA.