BRAND NEW STIHL FS 111R / ZERO COMPRESSION / YOU WONT BELIEVE WHAT THE PROBLEM WAS!
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- Опубліковано 13 жов 2024
- TodayWe dig into a stihl FS 111rThat will not start and has zero compression and 100% leakage past the intake valve follow along and let’s fix this trimmer #Stihl #4Mix #FS111R#SmallEngineRepair #LawnmowerRepair #Quarantine #BrandNew #KeyboardCowboy
Great troubleshooting! Very interesting...
Thanks Steveo! These 4
Mixes are something else!
Hey steve good to see you floating the net hope you got a beer in your hand L.O.L see ya back in the shop !!!
Steve in the house!!
@@allanhughes7859 i agree hope he has a beer in his hand. without beer people do not get the false illusion of working hard being worth it and then i get less tax dollars . :)) we need hard workers and the medicine keeps them going lol .
2nd this
That was some fine troubleshooting with a simple fix. Your explanation of events leading up to problem is perfectly understandable. I have experienced valve float in 60s muscle cars back in the day.
When you said “mechanically impossible” I was like yeah unless the valves float lol... then you came to the same conclusion that’s awesome! 4 mix stihls seem pretty reliable but I like my 2 stroke echo equipment because they don’t have stuff like this happen.
Yup on a opinion of the top manufacturers Stihl has gone way too cheap on the designs and materials used in the past 4 yrs Husqvarna is #2 then Echo and so on and so forth
On the other hand, when you lose all compression on a 2 stroke there is only a couple of possible reasons for it. Either the cylinder or the piston/ring is FINISHED.
@@josephherron7671 Yeah it's pretty strange that he said he likes 2 strokes because 4 strokes are more reliable. When there are issues, 4-mixes can be fixed quite easily whereas when a 2 stroke breaks mechanically it is probably devastating
@@waholoopesorry74 not really. The most common problem in a 2 stroke engine is a scored pistil/cylinder and that's a cheap and simple fix. And when it's done it's essentially a new engine. 4 stroke engines have a lot more parts to break, and that means more parts to fix.
I always like a good puzzle, and I like how you solved it!
Wow having the proper diagnostic tools for sure diagnosed it real quick!
Customer being honest, helps too! 🇺🇸🤙🏻🔧🦅
Great diagnosis. Keep up the great work and videos
You sure run onto the wild problems. 👍
I just saw the exact same problem in a 4mix. This one however was eight years old and had NEVER had the valves adjusted. So there was WAY too much lash on the rocker arms and the second he turned it on its side it died.
Great Call Good job figuring that one out
Seen this before and wondered why it happened. Now I know. Thanks!
Seen it many times but was due to sludgy valve stem
I've got 2 FS130Rs I'm working on for my municipality. The intake valve did the same thing on one. I adjusted the lash and restarted, did it again after 20 seconds with no real revs. The cam lobe looks like garbage but I also have reason to suspect carbon issues, as the engine sort of want to bind at TDC even with the cam removed. Good to know this is a common problem, as I'm not to inclined to stihl's more radical designs.
very good info and pics of the problem
Thank you, now I'm warned about a possible problem on my 4 strokes engine.
I didn't know Stihl had 4-strokes.
Thanks for this!! I may have the same issue. I was running my edger with a blade I knew was getting too short. I was trying to get thru the day and didnt have a replacement. I was using it and went to restart it, and then it shut down and lost compression. Im hoping its as simple as this fix and not more serious
Those workers that dld that, keep them around..
1) They get the work done
2) They make you look like a GENIUS
Nice work, and spot on about not being able to wait for warranty stuff sometimes, customers have to earn to pay for repairs
Thank you for running the engine at the end.
I’ve owned one Stihl 4-Mess. That cured me of ever owning another. My Shindiawa and RedMax units just work.
I agree.. very interesting insight on what happens when Dude's are working out on the field. That said I am not too happy with the new 4mix Stihl engines. The 2 stoke design was perfect enough
Yo yo cupcake 🧁. A good video.. I am working on am old fs90.. given me some head scratching lol .. hope all is good
I think you are 100% correct in your valve float theory, that is the only way this could have happened, grossly over revving under no load .
Once Again.You Hit A Grandslam.
Richard.
Great trouble shooting and explanation Jeremy!
I have a Stihl FS 81 that my Dad bought probably 30 years ago and it is still running strong.
Stihl working!
That was very interesting! Thank You for sharing this video.
Great sleuthing! Also, I had never heard of these 4 Mix engines, so you sent me on a search to learn a little more. Thanks!
Great video! Question. What is the secret to getting those carbs off without feeling like I am going to break something? I have to force them off and on every time. I know there has to be something I'm missing...
Dude liked your comment without replying
@@johncuervo3019 He made a whole video on it. Go check it out!
Awesome diagnosis!
Impressive.
Great diagnosis! 👍👏🔧🧰
Good job figuring it out
By shear chance the first trimmer I ever used was a Husqvarna. That machine served me so good (and still does) that I fell in love with the brand. When I opened my small land care business there was only one trimmer that I considered. Of course I bought 2 additional Husqvarna's 525 RX. I will be honest and tell you that I haven't serviced any of my 3 Husky trimmers, not once, in the last 4 years that I owned them and used them heavily. The sparks are the same, the air filters - original. Nothing. I always used their oil and had absolutely no problems with them.. I suppose Stihl is a great brand but I would advise everyone to buy Husky and be set for a life.
It must vary by region. There are next to zero husqvarna dealers here. Hardly ever see one at the shop. Or maybe they never break down one
Of the 2
Husqvarna commercial is hard to beat. Same thing as redmax. They’re simple and run forever, unless someone runs them lean with no oil.
We are lucky in my town - the main Stihl dealer is a small machine shop. The one employee is also the owner. If you take something back for warranty work, you get it back the same day. The next day at the latest. There are a couple other dealers in town, but they don’t even do their own repairs. Our guy won’t repair their stuff. If you bought it elsewhere, take it there to get it repaired. I understand that he is a Stihl dealer, but he has the luxury of being able to send those who bought elsewhere packing. I don’t blame him.
Great diagnosis
I do believe your professional opinion is correct sir . That was an interesting video.
Great explanation of valve float!
Great info Jeremy, I'll use this in my backyard shop brother.... thank you :)
Nice work 👍 He's so lucky that piston didn't smack that valve.
No luck to it bud! It’s a non interference engine!
@@THEMOWERMEDIC1 it's a good thing too. Or he'd be "floating" more money you're way 🤣
Great info Mowermedic1 with that being a 4 mix engine it has no governor like standard 4 cycle engines so it uses the weight of the cutting head and the resistance of the string to govern the engine speed i would be scared to see what the peak rpms were when that happened.
There is an ignition cut off limiter that cuts the ignition around 10,000 rpm, but no proper regulator.
Damn, I've repaired those engines since they came out, but have never seen that defect!!
Excellent fault finding diagnosis and explanation.
Awesome video. Great diagnosis!
The pros are tough on their equipment for sure.
That only happens with neglecting owners that run them wide open...
Valves start floating (sounds like rev limiter) then a rocker pops off or she drops a valve.
Simple.
Operate the equipment correctly
I have a 15 year old stihl fs100rx 4 cycle.
Runs perfect still.
I still cut yards/only ever had to replace the clutch
Camshaft
Air filter
And plug
Pretty impressive diagnostics. Makes sense.
I have a 17 year old Cub Cadet trimmer. I prefer Echo over it, but it still runs strongly to this day. That tells you something about Stihl!
It really doesn't. Are you running it as hard as this one is being pushed? I bet those people don't care about the equipment, and just want the job done, so everything is done as quick as possible, even if its not proper.
@@snoopdogie187 It's not used commercially. I'm not even the original owner of it. I got it from a friend who said he got it from someone else he helped move. It's a pretty decent unit although I would never recommend it for commercial use. Even if it was used commercially it's a pretty solid machine that will likely withstand the abuse.
@@snoopdogie187 what’s it tells us is old stuff was built to last.. I have an old poulan chain saw from the late 80’s that just keeps going it’s my back up saw but it always works
His 2004 ish string trimmer isn't really old enough to be in that category. Brand does have a lot to do with it, and cub cadet was a higher tier brand of mtd at that time.But my point was that when you are using a tool in a professional way, it gets abused more than any home use person would do. The cost of the tool is less than the cost of being slow.
I have one where the thin metal plate behind the cam gear had a piece come off, found it's way to the intake valve and hung it open...stopping the engine. Then when trying to restart, it got into the cylinder and dinged up the piston head. Other than that thin metal disc, the design is simple and sturdy
Another tid bit of troubleshooting information to be included in the Operators Manual....! Good diagnose !
Good job and tutorial yet again!!
Very common I don’t even start a new one without setting lash myself they always seem a bit loose from factory in my opinion
Question the white part below you thumb, that connected to throttle, what is this called please?
Interesting stuff. Thanks for the information.
Had the rocker arm come completely off the valve stem on a brand new BR800. Put it back on, set the valves and it's been running perfect for about a year now.
Nice video but that high end rev sucks! Four cycle??? Thanks 🙏🏻
Excelente Solución.
Te cuento que yo tengo una FS 111 y la pregunta es: Como se hace el cambio de aceite del motor?
Thanks for the info mate ,jimmy Australia
My goodness thats a brand new piece of equipment this is the reason i stick with echos in the 35 years that i have been in buisness not one echo has let us down even some of our little srm225 units that are 8 years old that are used 5 and 6 days a week none stop here in Miami fla are still going strong thanks for sharing.
Yes stihl has disappointed me, I bought a fs 131r and it has run like trash from day 1 and all the dealer can tell me is mine is the only one that runs this way skipping and popping but old husky runs like a charm
@@danielgraham9104 Yeah man i gave up on Stihl 4mix i even tried the Stihl fs94r i had 2 of them junk carb problems since the beginning cog starters breaking i mean it was so bad that my dealer refunded me for 2 Srm2620T its been 5 years this happened and they are still running like champs one i did have to change the carb but other then that still going strong and the little srm225 those things are little champs i run those as hedge trimmers all day long doing hedges and not one has let me down in 8 years.
Good fix.
Tappits are a nightmare with Stihl still wouldn't use another brand.
I remember KM90s back in the day bent and snapped tappits all the time unless they were adjusted every couple of months.
They did also get 12 hours use a day though.
Isn’t That an Interference Engine How Did The Valve not Hit The Piston 😮😮😳 That Was Lucky 😀😊 Great Diagnosis
Love the train sounds.
Thanks. Great video brother
You're an absolute genius 👏 🍕 Give this man a Pizza
You have a great understanding of the guys in the field 👍 and boy do you know stuff... 😉
Thanks 🙏🏼
Never had one of these how often dose the rocker arms need adjustment ,jimmy Australia
Hi, Have you done a video on performing a leak down test on one of these 4mix engines?
Absolutely
Can you send me the link please?
@@mattwillshire336 ua-cam.com/video/8YlmAazA2JA/v-deo.html
@@THEMOWERMEDIC1 Appreciate that, thanks. Was hoping you had one done on a 4mix or a how to pressure/vacc test for crank oil seal failure? I saw the video on the seal removal, Great video . Have a great day
Love the K5HL in the background
Yesssir we’re not far from the main hub where they service locos
@@THEMOWERMEDIC1 which railroad
@@midwestsirens I see a lot of bnsf
@@THEMOWERMEDIC1 what is the location? I’ll be able to tell by where it is
Down town Dallas tx
I'm surprised the customer didn't damage a valve and or piston. 🐯
Hey buddy is there anyway you can put down what’s the valve clearance on the trimmer thanks for the input blessings
ua-cam.com/video/jAylJAcF-iA/v-deo.html
.004 is what the feeler gauge measures for this unit. I measured it with dial calipers & a 0 to 1" OD mic.
Wow thanks for the great information very informative
I remember years ago a friend had a two stroke line trimmer that would not start and had very low compression.
It turned out to be a blocked exhaust.
Mason bees had built their nest in there while it was unused for a few weeks.
Had me scratching my head for a wee while until it fell over on the bench and I noticed the blockage.
I actually took one of my Honda Mowers in to have it looked at because it wouldn't start. Note, it started and ran fine at one job, loaded on the trailer, and was going to mow the next backyard because again, my zero turn wouldn't fit through the customers fence. It wouldn't start to save my life, Thank god i have two of these mowers. I took it in for service to have it looked at to see what could have happened. I was told by the mechanic from John Deere/Honda that the engine had zero compression and a new engine would cost more than the mower and it was toast. Just seemed very odd him saying that when it ran perfectly fine the last yard i did with it. I got to looking on the mower and noticed and thought, Did the front of my Honda bang against something in the front, dual overhead valve on the Honda and the cover is easily bendable. I thought and looked and it looked slightly bent in like it had banged into my big mower while it was on the trailer. I took off the OHV cover and beat it straight with a rubber mallet to make sure the valves had plenty of clearance and sure enough after putting the cover back on after straightening it, It fired up first pull just like it always did before. Honda HRR 216 19 year old mowers and i love them.
Crazy that the dealer said it was toast
Question re my , KM 110 Trimmer.
No Compression in my opinion.
adjusted valves per you instruction...Help
One's demise is always one's own making. I knew immediately it would be user error
Hey what if this continues to happen. I got a 100rx this keep happen. Soon as you fix it might run 30 min or 2 days before this happen agains.
How could the head come off with the motor running? Reason I ask I normally just get a cpl threads started and let the motor tighten the head.
Could also be a weak valve spring. Not all valve springs are created equal even when new.
Nah that’s not it
Two strokes still rule!
That's why they pay your the big bucks my friend
That was a crazy one.
I have a Home Depot Cub riding mower. Can you recommend a quiet muffler replacement? I've searched but cannot find one.
There isn’t one far as I know
Thank you Mr man
Man, 12hrs of straight trimmin!!
Hi, I have a husqvarna 128cd, that recently changed the piston, carb, fuel lines and spark. It won't start. Spark is fine (sparking), fuel lines are ok, and carb is new. What could it be? Compression? Something I noticed is that the cylinder / piston ring was too loose. Could this be the problem? Unfortunately, I don't have the compression gauge for testing.
dont guess TEST
Great Video Medic!
STIHL has a great reputation along the years. The only problem is the brand. It is like FORD
F abrication
O rdinary
R epairs
D aily
Jeep. Just enough experimental parts
You are th Sherlock Holmes of small engines. Speakin of rich oil mixtures: I just bought a 111 trimmer. It was new and they gassed it up for me. I cut grass and weeds for a few hours and realized I needed a brush cutter. I put the trimmer up for a week and the next wknd put 40 to 1 mix in it instead of 50 to 1 as recommended. Why did I do that? Well, that's what I had mixed and the folks I bought it from indicated that it would probably work. Unh unh! Couldn't get it to fire. It seemed like I had so much compression I couldn't get it to turn fast enough to fire. I drained the 40 to 1 let it dry out. Put 50 to 1 in and after a few pulls she cranked, smoked for a few moments and has run fine since. Does that make sense. Is it the case that a Stihl is so tight it won't run on 40 to 1 or is the carb unable to do its magic on the air and the mix with that much oil. Help me out here.
You should be fine at 40:1. If the trimmer feels like it had too much compression is because it was Hydro locked. When it Hydro locks that means that the needle and seat in the carburetor is allowing fuel to enter the combustion chamber and since liquid fuel cannot compress Well there you go
Wow..
Good catch ..
Stihl advertises and sells a lot of equipment- yet few OEM parts on line and many times on-order at a dealer. How do you run a business if there's no support for the product?
Where do you live? I’ve never had a real big problem getting parts other then having to wait 7days for a piston once
Stihl is one of those companies that makes you go to the dealer for everything. Buy a unit on their website and pick it up at the dealer. Other companies will ship it to you and put parts online but then your not going to the dealer where they try to sell you other stuff while you're there
I have an older model fs130r but whenever I turn it on cold start it runs with no power until it has ran straight for at least 2+3 minutes then it rev's up afterwards and doesn't stop until I'm done. I can turn it off and continue to run with no issues. Already replaced carb 2 times tank vent, fuel lines adjusted valve's and.cleaned all the carbon from engine. Mix is perfect I have just settled to wait for 2-3 minutes. If you have any suggestions please let me know thanks
Could be the start valve lifter that is sticking, or it could be a slightly lean air / fuel mixture. Mine does the same, I just let it idle while I put on helmet, gogles and gloves.
Hi Jeremy, hope it's ok to ask here: What is the normal compression for a 4-mix engine?
Stihl does not give a value for compression. They go by %of
Leakdown. Anything over 10% you need to start looking for leaks
@@THEMOWERMEDIC1 Thank you 🙏 I'll bring out the LD tester
I like the echo stuff better.
Serious question what brand or where did you get those torx bits?
Hi there, where I come from we say Stihl(Still) not Steel for the brand.
Berry, Berry Interesting!
Iv got a major question I need answers why in gods name are there valves on the sthil weedeaters it has me baffled
Nice video good job 👍
I have a km 131r severe vibration with the trimmer. Any thoughts
good info , thank you sir. Good job!!
I do not like any 4-cycle tiny engines, 2-cycle any day for many reasons
yep..... these "4 mix" trimmers is something id never buy.
4 mix trimmers are great, but don't overspeed the engine. Same can happen on a regular 4 stroke engine too. But I understand the love of 2 stroke engines, less moving parts, and as long as they are balanced and ported correctly, as well as right fuel to oil ratio/ fuel/air ratio, they can handle very high rpms.
Yeah, I was all set to yell "Intake PORT, ya knucklehead!" until I stopped and thought...
AND that's why you get oil in the fuel on a 4 stroke engine, because DUMB USER!
That was an interesting one. What’s you opinion on those engines? Good bad or indifferent lol
They all have issues regardless of make or model
Thanks for video
Makes sense to me 😊
This is the first I've heard of a 4-stroke running premix, interesting! How do they hold up hours wise compared to a 4-stroke with a typical wet sump or dry sump?
This engines been around for decades
@@THEMOWERMEDIC1 cool, how do they hold up?
@@8180634 if taken care of properly they last a long time