Can It Be Saved? trash picked 4 stroke trimmer from the dump.

this was donated to us after being thrown away, lets tear it apart and see what failed on this 4 stroke trimmer, how it works and if we can save it.

[@offroadguygavin6074]

Hey man I'm 13 and love your videos. i work on some small engines myself and your videos help me alot .. big thank you from Canada 🇨🇦

[@Bobbywolf64]

My vote is to adapt one for use as a tiny outboard motor, for something the size of a kayak. The shaft of the trimmer could likely be utilized as well. Keep on keeping on Mustie!

[@Laun0218]

Ahhh the memories, started working on small engines, then graduated to motorcycle and atv. Was a motorcycle tech for 35 years. You do awesome work. Thank you 😊

[@galenroot4099]

I’ve had the TB 4 stroke trimmer since 07. Was about twice the price of the cheap two strokes. But dang 14 years and counting! Thanks Mustie1 for another detailed video that I can go back to if needed.

[@cronicpain1015]

I just found you content. I’m a disabled mechanic and can’t work on things very much anymore. Really enjoy your videos. Thank you for all the details. Keeps my mind working like a mechanic. God bless

[@MT-gv8ns]

I recently bought 4 2-stroke and 2 4-stroke Troy-Bilt weed eaters from a landscaping business for $30 - with help from your previous videos, I was able to get most to run. Kept one of each for the yard and sold 2 others for $45 - also rescued an edger that was considered too far gone for $5 - runs fine now - was about to buy a new one - Thanks Mustie1

[@expatron]

Thanks for keeping the shade-tree mechanic feel to the channel after moving to the big garage. A few channels, WJRG especially, have lost it.

[@iansaddington6057]

Hi there Mustie 1. I live down in Australia and have had a Troy 4 stroke straight shat “Whipper Snipper” as we call them. Mine is branded designed USA and manufactured in Mexico. The Chinese made ones down here are usually clapped out in a couple of years or so. My Troy 4 stroke is 7 plus years now and still starts up and runs strong. Thanks for the rebuild lecture on my old faithful machine. You are a legend!

[@TerryMcKean]

Several years ago a friend of mine gave me a weed-wacker that had that same model of 4-stroke engine, only it was branded 'Ryobi' and had a centrifugal clutch-drive. I mounted the engine and a car alternator to a little plank and coupled them together and made a portable gas-powered 12 volt car battery charger. I made the coupler out of a socket wrench socket that fit the nut holding the pulley of the alternator and a carriage bolt, and filed the end of the bolt to a square shape so it would fit into the square hole in the clutch socket and passed the bolt through the hole in the wrench-socket and tightened it to the wrench socket with lock-washers and a couple of nuts. The square part of the head of the carriage bolt fit nicely into the square hole of the wrench socket. Thanks for sharing, Mustie1 :-)

[@salfrey317]

MTD ownes thr Ryobi power equipment line

[@daleburrell6273]

...very creative-!!

[@jackmackerel4151]

I bought one of these used for $50 a couple years ago. It's actually how I wound up finding Mustie's channel, googling how to fix it. So far I've had to replace the carb, replace the fuel lines and filter, repair the weird easy pull start spring, replace the trimmer head and weld the trimmer shaft cable back together twice. I probably spend equal time fixing this thing as I do using it, but I've learned so much from this channel because of it.

[@mick2383]

Use a square off solid shaft in place of squared off cable and pin it in with a small lock pin. Now you have drive shaft. Idea maybe, worked for me for my kayak.

[@arsler]

This was kind of my idea; but instead, drill and tap a hole or 2 in the crank and put a set screw(s) in with lock tight. The problem I see with the lock pin is that it could shear under load. Make the extended shaft long enough that you can put a pulley on it and make a plate and attach it to the housing using the existing screw holes. Put a bearing in the plate to help support the extended shaft.

[@fromagefrizzbizz9377]

@@arsler it came as a surprise to me that there is a "pimp my weedwacker" audience, that take weedwacker engines and provide "performance parts" for them. I don't think they're much for using it in the weedwacker per-se, but for using the motor for something else. The venerable homelite weedwacker engines have quite the industry of souped-up parts. Enhanced "big mouth" carb, motor mounts, shaft adapters and many other things. We bought them and turned a homelite into a model airplane engine with a 16" prop (a funny story in and of itself). They're also popular in model boats. The big problem with using these engines for many things is that the optimal RPM is far too high for most applications. Usually around 6000-8000 RPM. There are gearboxes intended for model boats.

[@geralderdek282]

I really appreciate this video tear down of your tb465ss trimmer because I've been using one for many years now after buying it used from a pawn shop. I've aways been curious as to its cam mechanism. I could not find decent illustratios anywhere and did not want to take apart a perfectly good running machine. You did it for me. Thanks!!😊 There probably arnt too many of these early models left still in operation as people just throw them out when they won't start and buy another but ive always enjoyed taking care of my machines and keeping them running!

[@ronnath1581]

Kinda hoping you were in Egypt getting that boat started

[@alanwbelcher]

LOL

[@Scodiddly]

Didn't fit on Mustie's trailer.

[@danieldyer1]

Mustie is a superhero, but not quite Superman. I think moving a huge mass will be required. Maybe if he could find a lever long enough...

[@fyreantz2555]

Good morning! You've won today's internet!

[@PapaWheelie1]

I’m thinking dynamite is the best plan for that washed up ship. What isn’t blown to bits will be eaten by birds. 😉

[@johntapp4951]

A few years ago: Snowblower, trimmer, whatever won’t start when I need it. Call service shop, haul machine over there and wait three weeks with the other Schmucks in the same position (while no yard work gets done and wife is “unhappy”), not to mention $150 out of pocket. Now: Snowblower, trimmer, whatever won’t won’t start and Dad gets that grin on his face - 30 minutes (or less) later, machine is running, work gets done, wife is happy. I owe it all to Mustie!! My father was a gifted mechanic, but he was killed when I was 8. Always had the aptitude, just didn’t have the knowledge. Mustie has given the knowledge and confidence to tear anything apart and know I have a really good shot at getting it running. There are no words of adequate thanks!!!

[@thesunexpress]

Same thing here. Tho my old man wasn't killed, he was otherwise not present. What I did inherit from the man was his penchant for all things technical. I've learned from seeing others do things too. Rumor has it, it was in this same manner my father became a dentist, observing dentists do their thing during WW2 whilst imprisoned in a Japanese death-camp in Indonesia as a young teenager. This, I blame, is the reason I ended up with degrees in mechanical & chemical engineering... and all manner of gadget assembled/disassembled in my man-cave.

[@michaelhartzell9758]

Jeez, 12 minutes and you already have 112 thumbs up. Somebody has a following!

[@ivorwm2291]

You are the best teacher. I cannot tell you how much you have helped me learn about these machines. Thank you!

[@scottrostad2346]

I can relate to so many of these videos. While I was growing up, my family lived in a very small town, which had a "dump grounds". The nearest "city" of about 38,000 population, was about thirty miles away. That "dump ground" was more often than not, our local hardware store, lumber yard, appliance repair source, small engine parts supply store, hobby shop and source for any number of other project needs.

[@scottfirman]

Sounds right. We ended up bringing back more than we dropped off at the township dump. They still use the dump but today it's a yard waste dump. I had no idea that dump backed up to the Muskegon River Valley. Meaning any heavy metals or pollution flowed down hill into the river flats. I thought that was dumb until I see the original city dump where I live now also backs up to the boardman River which flows into the Bay. Our forefathers were real idiots!

[@tomrogers9467]

We have a “transfer station” with a big steel scrap area. Scored some good stuff in there. Sorry, missed the “No scavenging” sign! Went in to dump brush one day and came out almost the same weight. Had the scale person scratching her head for a couple minutes. Faulty scale, was my explanation!

[@sknerl]

I didn’t visit a department store or mall until my late teens, but we did visit the city dump nearly weekly. Like you, we came home fully loaded coming home every time. Block, lumber, my best toys, bicycles, fans, carpet...if you could think it..it came home. I don’t remember anything quite like this. Just 1000s of blocks...

[@michmvp]

My dad built most of a cabin out of a couple dumps and stuff picked up off the side of the road. I'm 73 and still cruise around on trash day looking for anything with a motor on it. If it has compression, it's mine.

[@tomrogers9467]

@@michmvp My Dad was a printer. The paper came in on big pine skids with a pine top - cap. Who ever knew you could build a cabin out of them! Our generation, for the most part, grew up relatively poor and had no problem scavenging and saving. Today? They’d never put down their Starbucks to pick a quarter off the street!

[@PaulieMac77]

Is anyone else picturing Mustie as a kid pulling things to bits to see who they worked? I know back in my day that's what I use to do then put them back together 🤣

[@johnzudans7724]

The one you’re not working on has an attachment that will let you start it with a drill, very cool the start tool is at Home Depot for about 10 bucks, makes starting really easy.

[@charleseck3941]

Plus, you could adapt that start tool hole as your power take off.

[@andrewwoodward6560]

If this was put on a bike maybe make as a push start.

[@dfgggfg]

Some years ago, I made one MTD trimmer out of three broken, and a little different models) And it worked fine, but looked awful) Thanks for reviving these memories!)

[@AnthonyRBlacker]

I love it when Mustie rheto'rically asks "do you want to dig a little deeper" hahaha YES keep going man!!

[@aceadman]

Dear Mr Mustie1, I sure do love the will it run, fixing broken motors and stuff videos. LOVE them. But I also yearn for the days of your longer term, dig-in projects like crusty and the cushman. And I’d sure like to see more stuff like that. You’ve started so many great potential projects and then they just vanish. Sometimes forever, sometimes for a year. No criticism at all, I’ll watch and LOVE anything you do. your skills and presentation are literally the best on youtube. I can’t get enough and Sundays can’t come fast enough. But if I could be so bold as to make a request... yours truly, a loyal fan. 😊👍👍

[@jansmit4628]

You can mount a plate to the four screws on the front with a bearing and a center pin to the engine. On the other side you can mount whatever you like from a wire, poully sprocket.

[@marcryvon]

Thank you Darren for a VERY interesting class in small engine ! Incredible engineering on such a tiny 4 stroker, and sold so cheap ! See ya next Sunday. Stay healthy, the Ms and you !

[@tomrogers9467]

I’d expect the majority of parts are made with robots, too!

[@themole1944]

Thanks Mustie from the other side of the pond

[@JD-zm4eh]

It's like I'm back in high school shop again, Small Engine Repair and Maintenance. Thanks Mustie1. I have a 2 cycle weed eater that needs gone through again, I serviced it about 10 years ago.

[@dogit1840]

What you should do is go to the eye doctor because I saw a spark from the very beginning lol

[@davidhamilton7628]

Probably just the camera picked 8t up better cause I saw it to

[@timwilliams9443]

Piston is the size of a half dollar

[@stevewhyte8476]

you can't get an appt. at the free pile !!

[@n1r0l]

He could just hold his finger on the end of the plug to be sure, or better yet get his younger brother to hold it, that worked for me at least once.

[@lastplacetrophy3821]

Yuuup

[@TheOriginalFreak]

Pull start: That is the wrist-breaker/shoulder-killer/arm-wrencher "Easy-start" feature from the late 00's. The idea behind the design was to convert distance into torque. Supposedly a granny or a child could start them as the pull start stored the energy of the first 2/3-3/4 of the pull length and then released it during the last 1/3-1/4 of the pull. This was supposed to work better than standard pull-starts where the energy from the pulling of the cord is more directly and linearly applied to moving the crank shaft, basing its function as a starter on the understanding that a well working engine is essentially a coiled predator waiting to leap into action with only a slight nudge by turning the engine through its cycles and applying spark. By adding this Easy-Start, a few things could be changed. First, individuals with less arm strength could start trimmers as there was no longer a need to use momentum (pulling really quickly) or brute force to start a trimmer, the new device took care of both via its store and release design. Secondly, manufactures could warrant further cutbacks in quality in other aspects of the trimmer. If the device no longer needed to be in "ready to start" quality at all time in order for the pull start to actually start the trimmer, they manufactures could lower quality and fall back on the increased torque at the end of the pull cycle to make up the loss in "startability" from reduced quality of build and even later, design. While the physics behind the design was proven (converting distance into torque with a sudden release), the issues with its use in designing these starters, and the source of its nickname, was a combination of cheap build and user habits. The device was never well 'tuned' or smooth in function. The instant when the device converted your long pull with little resistance when pulling, to a pull with high resistance and great force on the engine to start it, occurred with a sudden and jolting change. While not necessarily the intension of the manufacturers or designers, this was the result of the implementation, mnost likely due to restrictions on quality due to cost cutting measures on all but the near-pro level of models. You see, as old Doc Brown would say "they weren't thinking 4th dimensionally!!" While such a pull start may be fine on a new product no one has ever used, putting it on a very well established product meant that 90%+ of users were still pulling on the cords just as they did their previous trimmers; quickly and with a lot of force. This speed and force resulting in the pull start devices being overwhelmed by all the energy being put into them all in a short period of time, the exact opposite of how they were designed to be used; slow and light force. This resulted in the device storing up 2-3 pulls worth of energy and then releasing it all of a sudden near the end of the pull, an amount of energy the engines compression would magnify and shoot back through the system as the engine was not designed to absorb so much energy all in the short time of the pull stroke. I say 2-3 times the energy as keep in mind, the device not only stores the energy of the travel distance of the first 2/3-3/4 of the pull, but also uses energy in the last 1/3-1/4 of the pull. When pulling with decent force and speed you add this this equation inertial energy with does not exist with slow and light force pulls. Thus you end up with the 2-3 "normal" pulls worth of energy which is NOT being used to overcome the inertia of a standing still engine, NOT being used to overcome compression, all because the trimmer was not designed to require such overcoming of inertia, but was designed for the Easy-starts 1/3-1/4 pull distance of sudden stored energy. I would compare it to the difference between a compound bow and a traditional long bow. The compound bow is designed to have the string pulled slow and stead and the bow will let off near end and thus easy the overall pulling of the bow. The long bow has no let off, so often there is a quicker, more forceful pulling action required, with the knowledge the bow will absorb all that force through the entire pull/draw more or less. If you tried to draw/pull the string on a compound bow with the same force and speed as you did a long bow, you will overshoot the pull off point (force required to pull string changes dramatically requiring significantly less force to pull the string further back) and a) hurt yourself, b) damage or destroy the bow, c) Cause a rip in the space-time continuum.) Much are the risks associated with a quick/hard pull on an easy-start of the 00's. Thus you had a well thought out concept, designed in a so-so manner, built crappily, and used improperly by most. Suffice it to say, that feature was not long in the tooth and soon replaced by the modern "Easy-starts" with smoother transsisions in pull force required throughout the pull and those five sided sockets you can use a drill to start your trimmer with. Good day and God bless.

[@bren-xmotorsports55]

We need a tour of all your projects and what state of progress they're in. I know you have three or four car projects going

[@ianginger5709]

Hi mustie watching from australia i have learned a lot watching your chanel i think your awsome the way you show us what your doing is awsome thankyou

[@harmlesscreationsofthegree1248]

Sunday night treat for me! I wasn’t tired anyway 😂 best timing ever

[@robertgerber2533]

I like the way you talk to the audience

[@shredct3118]

Good morning my fellow Mustie1's

[@poipians]

morning

[@alanwbelcher]

G’day, mate!

[@jasonhendrie5411]

Morning

[@paulj1962]

Thanks, you have given me the motivation to keep my 30 year old McCullough 282 string trimmer running

[@marcelcanuck]

i pick up tons of those four strokes trimmers at the landfill , i think most people prefer the two strokes

[@Andy-df5fj]

Not me. 2 strokes always get gummed up on me. I know it's my fault for leaving fuel in there, but 4 strokes handle my neglect better.

[@marcelcanuck]

@@Andy-df5fj ya , you have to take 5 minutes to drain that tank and run the engine until it runs out fuel when you store it for winter , even straight gas gunks up the carb eventually

[@averagecarguy420]

What I’ve found with these small 4 strokes is that if you accidentally touch any of the tuning needles on the carburetor they’re impossible to re-tune. Probably homeowner tried to tune it and made it worse, got frustrated, and thrown it out. I’ve picked at least 10 ryobi 30cc 4-strokes that worked perfectly once I put the carb back to factory settings.

[@marcelcanuck]

@@averagecarguy420 yep , have had the same experience with these as well , i picked up several at the landfill last summer , all of them had good engines but ran poorly due to tuning or bad diaphragms

[@TwoTrakMind]

I hate 2-strokes. They're so finicky. I think most people have 2-strokes because there are very few 4-strokes sold.

[@joechapman5180]

These engines work very well on RC aircraft with a few minor modifications---really sound like the real thing !!!

[@lowrider441]

A friend of mine has an engine similar to that in a model boat he built.

[@joehosek360]

I just found your channel a few weeks ago I really enjoy it. I can’t stop watching it . Keep doing what you’re doing looks like I have a lot of shows to get caught up on. I loved watching you build crusty.

[@andrewrose2627]

They would make a fun project for an outboard on a canoe or something lol

[@Justicescales123]

Agree, a little troll motor would be cool.

[@TerryMcKean]

Definitely, Andrew and Justicescales123... another fun thing would be to attach a small tire to the spinner and use it to propel oneself on skates or a skateboard. lol :-D

[@bobcranberries5853]

I was going to say the same thing. Or maybe even a kayak

[@kubandude]

Exactly what I was thinking. One of those long poles with a prop at the end popular in the South Pacific.

[@TheTed169]

One person Inflatable pontoon boat.

[@russcattell955i]

I bought a Honda 4 stroke straight shaft type, besides a cutting line bobbin it also has a 3 blade steel cutter for tough jobs. works perfectly many years later.

[@Tommy_Poole]

You ever thought that your neighbours throw out perfectly good stuff just so they can see it being taken to bits on KZbin.

[@marcryvon]

🤣🤣🤣🤣

[@Hjerte_Verke]

Hahaha, NOPE. You're silly.

[@dsloop3907]

I have 3 year old Troy Bilt riding mower that was free, the drive belt had twisted and broke, I volunteered to haul it off. Anyone need a good mower?

[@rawr51919]

Then see it running better than it's ever ran

[@tbelding]

@@dsloop3907 - Yes, but I bet you're not in texas :)

[@andrewbowers3676]

Thing I learned about weed whackers and other similar two stroke stuff (and the small four strokes) , if the pull start is on the same side as the output shaft (like this one) it’s a “half crank” versus the ones where the pull start is on the opposite side - those have a full crankshaft that is supported on both ends like the larger engines, they are more expensive but they last much longer. There’s one of these micro four strokes that’s got an overhead cam with a tiny timing belt that runs it.

[@notajp]

My Stihl MS192 has a similar recoil system that winds up like that. I have a Crapsman 4 stroke trimmer similar to that one, but it’s propane powered. Was converted by a company called Lehr. They also made propane powered lawn mowers, and boat motors.

[@broken_font1881]

Thank you Mustie1 for dismantling one of your machines for us to see. I appreciate that we can now see exactly how small one of these 4 stroke engines are on the inside. Aint it a cute lil thing lol 😄

[@kennypool]

What's the story with the orange van? You should update us and your projects, like Jay Leno does. Have a nice day.

[@lomgshorts3]

People sometimes put a 3 bladed prop on an old "weed eater"and use it as a trolling motor on a small john boat. Some will use a larger "leg" and replace the power head on an outboard with an 18 to 20 hp air cooled Briggs. Pretty neat!

[@joolwing]

Best channel there is!

[@stanleykeith6969]

Great Job as always, I even learned something new. I have a 2 cycle that is hard starting and I have the little adapter that goes on my drill. Make it easy to start. It is a Troy built as well.

[@bcgrittner8076]

My shop sold a clone of this trimmer years ago. While a 4 stroke is environmentally responsible, the engine transmitted serious vibration to the operator’s hands.

[@machetefoot]

You have inspired me! Over the weekend I went out and acquired a couple free snowblowers and lawnmowers to tinker with. Love the videos man, cheers from New Hampshire brotha!

[@toonw669]

Sunday saved by Mustie1! "Kids, daddy is busy now".

[@fyreantz2555]

No doubt...

[@erickvaughn9120]

Thanks! Love the Mustie1 format/style. Always feels like I am right there with you.

[@markshomehobbies]

The fuel filter/weight is known as the "Klunk", love your videos.

[@videodistro]

Yep. Seems like use hobby flyers all know that one.

[@cjwynn69]

Great video. I enjoy watching the break down, kinda "how's that work" sorta thing.

[@donparker8246]

I was envisioning a motorized skateboard. That motor world be perfect for one.

[@meme2287]

This channel taught me how to troubleshoot engines.

[@CajunGreenMan]

14:25-15:15 I see spark on virtually every pull, even before he turned the lights off. Maybe just the camera angle showed it but Darren couldn't see it from his angle?

[@drstkova]

Me too...

[@antonoudenhoven7573]

Nice video again. Just a little tip from me,always test the spark on the wire and not on the sparkplug

[@paulmccoy2908]

On today’s episode, Mustie puts gas in 2 trimmers and they start right up.

[@Chr.U.Cas1622]

Dear Paul M. Yes, you are absolutely right. Starting right up, additionally no rodent crap, no rust, no carburator cleaning? Even spark was okay! So maybe it's a fake video? LOL 😂😂 Best regards, luck and health.

[@jameschippett2177]

Word has got out, if they don't start off comes your carb, and if you still don't start, it's not off to the scrap pile, he is going to fiddle with your cam sharft, crank, pistons and gudgen pins. Cheeky

[@pyrojason]

Both had spark, good carbs working parts.. what is this channel coming to? XD

[@AmraphelofShinar]

You should call Aniket from Musket V Twin to make you a crankcase for your proposed 50cc v twin engine. You could call it the Mighty-Mini-Mustie-Musket!

[@johnmarshall6100]

I noticed when Mustie gets that first sputter of life out of a dead machine he laughs just like Bob Ross does when he slap cleans his brush.

[@kliller854]

I've never seen such cute little motor parts! ♥️

[@mick2383]

Mustie both plugs are producing spark, glasses on please 🥺

[@randallcarney1216]

I have one like it 2007 model and still going strong! Good trimmer

[@kiesha104]

Mustie : What you got,? Musties Supplier: What you need ? I got weed whackers, Lawn mowers , Generators but you gonna pay fat for thoes....😳😳😂😂😂😂😂

[@Erik_Swiger]

I love these little engines. They're cuddly and they like to purr.

[@MrHowieZ1973]

Anyone else notice that Mustie's weed dealer is a junk dealer instead? lol

[@ppumpkin3282]

junkie

[@MrHowieZ1973]

@@ppumpkin3282 lol

[@TechGorilla1987]

That would be a joyful-sized motor to tear down with a young lass or lad that was looking in to the mechanical trades. What a fantastic learning device.

[@peregrine1970]

That looks like the perfect engine for a shop class. Pretty dead simple.

[@joshjablonicky171]

Yes but So is a Briggs motor they are more plentiful.

[@stacycarter8641]

It would be great for shop class, but that went away like 15 years ago....

[@joshjablonicky171]

@@stacycarter8641 which is unfortunate. They don't want people to know how to work anything for themselves.

[@wildefox1478]

I have one of those 4 stroke Troy Bilt trimmers just like that which a neighbor threw out, I got it running but it only idles, as soon as you squeeze the trigger it dies. Probably just needs the carb rebuilt. Stihl makes a 4 stroke engine that runs on 2 stroke mixed fuel, no crankcase to hold oil, they call it a 4 mix engine. I have a BR600 backpack blower which has their 4 mix engine.

[@edd2771]

Don’t get me wrong. I love all your videos. Each and every one. But What’s up with the econoline???

[@zzzman2206]

It would be nice to have a video with the status of many of his projects. I understand how you can lose viewers interest when you work on the same project week after week.

[@davidhudson5452]

Up In Attic

[@marcelcanuck]

he might be into the small stuff because he doesn't feel up to tackling the bigger projects right now , keep in mind he's semi retired , not the spring chicken he use to be , lol 😂 i'm sure he'll get inspiration to jump back on the Econoline

[@davidhudson5452]

@@marcelcanuck Me Too I Was Joking Wont Fit In Attic

[@marcelcanuck]

@@davidhudson5452 lol , we're not spring chickens anymore , some days getting out of bed without generalized body pain is an accomplishment on it's own , 😂

[@frankvucolo6249]

Nice video! They are 30cc and go for just over $200. I’ve had a 4 stroke trimmer for a few years but have not had it apart yet. So it was good to get a look at how it is put together. I know it’s just a pet peeve of mine but I wish they wouldn’t label them 4 cycle. It’s one cycle - intake, compression, combustion, exhaust. Ya either do it in 2 strokes or 4 strokes. It’s one thing that 4 cycle has fallen into the vernacular, but another when companies who design, engineer and build these things use the terms. OK, off my soapbox.

[@mustie1]

l agree and was going to mention it in the video, but it got edited out

[@jamesscott1932]

Isn’t that little Troy engine a hemi? Seriously, look at how there’s a bit of a splay between the valves when the cover is off and the spark plug angles down right between them. Very cool indeed. Looks like a hemispherical head or maybe a semi hemi like a rat motor.

[@TheMatthooks]

We have one with a similar pullstart. They call it soft start or something like that. Winds up a big spring then lets the tension go all in one go to turn the engine over more quickly for less effort.

[@JessicaTG2008]

He's actually teaching us a lesson in "If it aint broke, don't fix it" They both seem to run fine, wsnna take one apart and see how it works?? Who's going to say no. Not here, where's that body hammer at?

[@perrydegonia5755]

I love it. The smallest piston I believe that I have ever seen this one that are in the gasoline operated small airplanes. That we had as kids But I love what you’re showing me I never did like to work on weedeaters either

[@jimalexander1896]

As always very entertaining very informative I love the way you troubleshoot it is so cool have a good one cheers

[@AiMR]

I want to watch you lap those tiny valves for ants 🤣

[@mikecorrado4971]

Excellent video! Very educational and entertaining also! I was betting that engine would not run after you dismantled it and then put it back together again! Glad I was wrong! Thank you so much!👏

[@mikehotchkiss8975]

Sort of expected you to sacrifice a 1/4 drive extension as a drive. Camera works well, it picked up spark early

[@caverbrad]

I have that same unit and it was a problem child. After replacing fuel lines I found a cheap knock-off carb online. By that time I had bought a battery trimmer for the house so it does duty at my rural property.

[@sasuva1]

When pulling over that type of recoil, find the compression stroke with short pulls first, then use full pulls. You'll thank me later.

[@sommerjared]

Not sure about these particular models, but generally the heads spin clockwise on a bent shaft snipper but anti-clockwise on a straight shaft. So the heads may not be compatable, as generally a straight shaft snipper head is "left hand thread" so it doesn't spin off during operation 🙂 thanks for another great vid!

[@nahashsan]

Here's my idea. Looks like you could run one in reverse by switching the carb and exhaust. Join the two cranks with a sprocket and use thin pulley with a notch for the pull start

[@FourSeasonsNorth4x4]

Awesome!! You just took apart my engine..engines actually. I have two of them in combi units I use as backups for my lawn care service. I’ve seen some if these come apart before and I think if you go one more level outward you may find a square drive output(can’t remember if male or female). I think the only thing these could be used for is something with a cable drive or maybe some sort of drill device. Awesome job on the tear down.👍👍 That saves me some time if I’m ever curious. Many thanks.

[@ChrisG0]

As you get older your eyes run at a lower framerate, so basically you could not see the spark :)

[@ArcturanMegadonkey]

That was great to watch, I fly model aircraft and we have 4 stroke glow engines which go down very small, the pistons on the small ones are tiny

[@ajwilson605]

R/C modelers use these engines on large and giant scale flying models. With specialty fuels these little engines can make as much as 5 or 6 horsepower. Methanol/Nitromethanes is a common fuel to get high power from these engines. 4 strokes have good idle operation and excellent throttle response when tuned and set up properly. If I remember right, there's a giant scale B-17 that flies with 4 of these engines.

[@pekkakoski6595]

G-dammit I must repair my 2-stroke weedwhacker before weed starts to grow. Greetings from Finland :)

[@deplorableb.r.4211]

Don't worry about it...it will be winter soon enough in Finland. Lol.

[@beakittelscherz5419]

Do like the old Greeks : Smoke it !

[@hamidijafri]

In my country, it is impossible to find such machine in a dump site. USA great place to be in this case. But, i don't fancy the cost of living there though. I'll be homeless with the kind of money i have. You guys over there, stay strong and well.

[@_RocketRooster]

I hate to say it but i saw spark from the second weed eater before he changed the spark plug 14:25 but i could have been still seeing sparks from the lightning strike that nearly got me the other day! LoL Love all your videos Mustie1! You Yanks sure know how to work on small engines. Hats off to you guys.

[@neil6212]

Neat little engine! Well designed to eliminate cost. Now, with winter almost over, when will you be getting back on your very interesting four wheel projects? Orange truck, the King Midget, the most recent VW powered car, and the other sporty car from a year or two ago? You always make the process fascinating!

[@doctorjohn-burgtekie]

Be prepared always have a fire extinguisher standing by like Mustie has on the table.

[@tchads_57]

And one by the drill press. Makes me wonder if there was an unanticipated combustion event. 😀 Always learn something from a Mustie1 video. 👍

[@beakittelscherz5419]

@@tchads_57" An unanticipated combustion event" is the nicest way to describe an accident Fart I´ve ever heard ... :-D

[@robertsimmons1264]

I worked in a head shop in the late '60s. Those valve seats would be fun to lap!

[@flixtonman]

My 1955 350 Ariel has only one camlobe and lever rockers like that engine ,cool little engine Dave fromthe U/K.

[@revolver64]

Good morning from CA. Got my coffee and enjoying another great video.

[@gregorythomas333]

A bolt can be squared off and put into the shaft hole to get a power feed.

[@harleymcclure9802]

In the early days of large RC airplanes, they took 2 stroke weed wacker engines and ground off anything not needed and used them to fly airplanes. They started them by flipping the propeller wearing a heavy leather glove.

[@stefanandersson5604]

Hi! Good ide to build to together. Thanks fore sharing fun video! Love your work. Greatings from Sweden 💖✨🔧⚙

[@davidwiggins3451]

Love to see a 4-stroke 75 cc inline 3 on one of your vintage bicycles.