Why are these STIHL BR 800’s hard to start? Let’s Crack The Code
Вставка
- Опубліковано 2 жов 2024
- Taryl's gonna give this thing a complete teardown and perform an autopsy on why this STIHL backpack blower is hard to start. It was always hard to start since it was BRAND NEW and even STIHL won't make it right. Don't worry, the master's gotcha covered. We don't talk about repairs, we get 'r done! Now There's Your Dinner!!
Subscribe Today for all the latest videos! (Click 'Subscribe' on this channel!)
TFA Skits Channel: / @tarylfixesallskits
FACEBOOK: / tarylfixesall
INSTAGRAM: / tarylfixesall
TIK TOK: / taryl.fixes.all
MERCH: www.TARYLFIXESA...
THEME MUSIC: tarylfixesall....
Get Your Parts From
www.ProPartsDir... and Tell 'em "Taryl Sent Me!"
#stihl #backpackblower #smallenginerepair #tarylfixesall #grassratsgarage #diy #howto #troubleshooting #troubleshoot #fix #repair #blower #getrunning #willitrun #smallengine #2smoker #2cycle #2stroke #4mix
Wow, my Stilch blower has been GOLDEN!!!! No problems at all, except, well I had to do a valve job. Then had to put in new rings. Later on the spark plug blew out the threads so I put in a helicoil and fixed that. Oh, and the crankshaft ball bearings went out. But really nothing else. Except the carburtraitor snapped off, had to replace that. But that's about it. Oh, then the flywheel key twisted off like the one you are working on here. Had to replace the flywheel. That's it. It's been GOLDEN. Oh, I forgot the throttle cable broke and had to put in a new one. But that's all. Except one day the gas tank cracked and leaked all over, and had to replace the tank, but that's it. It's three years old, that ain't bad for a machine that's three years old. Yep, it's GOLDEN !!!!!!
2 stroke 😎
Haha you had me reading that whole thing
😂🤣
This is all good to know if I find a new looking BR 800 on sale for less than $100. Lap valves, replace spark plug threads, remove flywheel, pin in key way and make witness mark on crank, red locktite flywheel. Keep an eye on gasoline tank, maybe bound reinforcement to some areas.
Run a lower mix oil ratio than Stihl recommends. I use Stihl mix oil at 2/3 gallon rather than a gallon with REC 90 gasoline and a double dose of Seafome. I have to drive about 20 miles to a REC 90 station. Its worth it. Instead of a 50:1 ratio that gives 33.3:1 mix oil ratio. I don't get any smoke and I'm using it in a 1968 Sears Allen Bradly chainsaw. The Seafome makes the chainsaw sound deeper. Seafood is not a gasoline preservative. It removes carbon, encourages cleaning and is recommended for 2-cycle engines.
With REC 90 I'm on my second summer old fuel and the mower starts on the first try. It is likely ethanol fuel in an engine dependent on mix oil for its lubrication that is killing the engine bearings. Usually a 2-cycle kills its cylinder piston contact surface before real damage to the main bearings. REC 90 is made for 2-cycle marine engines being stored through the winter. It has no ethanol and is intended for long term storage so it might have some other attributes.
Shilh throttle cable and kill switch are weak design areas in older Stihl string trimmers. The leaf blowers seem to follow the string trimmers more than the chainsaws. The kill switch isn't really needed because it almost as easy to just choke out the engine to kill it.
If buying new, Echo makes the most powerful string brush trimmer and it's light weight high reving 2-cycle. Echo's throttle cable and mechanisms are smooth and robust. Echo has a reputation for overheating in hot humid weather that I have experienced and will not start until a 20 minute wait in a cool spot. Stihl is harder to start, but are strongly heat tolerant. This is for older stuff in the 1990s.
My Stihl FS66 string trimmer would get slow after getting hot. I think that is because the seals are not up to the task. Other trimmers use larger diameter seals. They seem to need to be Stihl made seals because even though a standard seal, non Stihl seals seem to leak and Stihl doesn't make their own seals for it anymore with NOS going for over $100 a set! The standard seals of this size go for $10. I'm going to try another brand of seals.
What a piece of CREP! Repairs cost more than the machine.
I remember when nearly all landscapers used Stihl. They started becoming unreliable and now I see them using Echo. Taryl did a good job fixing this blower.
Stihl has become a low quality product. I have a Stihl chainsaw and a string trimmer and both are junk.
With the economy nowadays, people don't want to spend twice as much. They're both good quality, but who wants to be wasteful on stihl for the name. Not me.
Agreed , I have an echo weed wacker very happy going on 10 yrs now. I have a Huskavarna chainsaw from 20+ and also an excellent saw.
I got a br800 and echo 9010, the br800 is way more agile/maneuvarble in tight spaces like behind shrubs, etc and is more quite. The 9010 definitely punched through the big piles better though, but loud as anything
@M.TTT. Noise is very upsetting to people so I would try to avoid using the Echo early and late in the day.
Thats what happens when you clean off your work bench. You can't find anything.
I have to have a specific place I put things and always put the things back where they go when cleaning up.
If I don't I'll spend half an hour wandering around looking for things, and yes, I keep going back to the same places I've already been and look again. I also find things when I'm looking for something else and think, 'My goodness, I never would have looked there to find that thing when I really need it in the future. I go ahead and put the thing in a much smarter logical place because I know I'm going to be needing it at some point.
I hate when that happens. 🤦♂️
BLAME It On SLIPPERS👍🤣
Use a sharpie pin on the valve face and turn it again and then you can see if it is seated all around.
Every piece of Stihl equipment I owned was hard to start when cold. I switched to Echo, starts right up every time, no hassle. Plus I don't have to get ripped off from a Stihl dealer buying overpriced parts.
Most folks are using starter fluid or dibble gas in intake behind air filter
They hate the 800 and are switching to echo 😢😢😢
Sound like Stilch isn't pressure testing them seals during quality control time.
I've had an 034 since 92, been a great saw never had a problem.
I am a certified Stihl Tech, best way to lap the exhaust valve is to use a small piece of gas hose and after putting lapping compound on the exhaust valve use the piece of gas line and put on the top of the valve that sticks out of the top of the engine then use a nail with the top grounded off and put in in a cordless drill and stick the other end of the gas hose on the end of the nail in your drill and gently pull on it to lap the valve. Works real good, then use brake clean to spray off the residue compound.
What about the Yellow wire? You said during reassembly you would talk about that, or did I miss that? Great video again.
Guess He Forgot...Musta'-Had Too-Many HAMMS🍺🍺🍺🍺🍺🍺🍺During Them POTTY-BREAKs🤥💦🚽
That was a great video which showed your skills as a great mechanic and diagnostician.
When I was a landscaper we used all Stihl equipment and seen a decline in the way they held up compared to before. And this was awhile back. Most landscapers were switching to Echo equipment back then.
I have a Stihl ms170 with the cast-in flywheel key. It sheared off after about two years and 40 hours use. Most frustrating fix I ever had. Like the blower it would crank or not, maybe run great for 5 minutes then quit and not crank back. 30 pulls later may crank/run like new for a few more minutes. Had fuel and fire and not even hit on starting fluid. Stuck it under the work bench and just bought and used another saw till I had patience to not throw it away and tear it apart. Finally found the sheared cast in flywheel key that had the timing all off. Bought a $9 flywheel off ebay and it has ran fine for the past four years. That cast in key was a bad idea in my opinion, a designed failure point.
Wow your patience is amazing!!! You are a mechanical genius. They way you diagnose equipment is absolutely amazing. The mechanics when he took it back couldn't figure it out and you did, awesome just awesome!!!! Great video Mr Dayctal
its likely the techs (if certified) knew exactly the causes and flagged it. back packs are now to much work for the money. and telling the cust their better off writing the unit off. either way the cust is going to be pissed off and take their money else ware.
nice job terral
So after watching I did get a few good take aways:
1- 50PSI is not too low for the machine to start.
2- Using a tap holder to lap the valves is so simple that its genius!
3-The guy that commented that this "big" blower is putting tons of carbon in the atmosphere is watching the wrong channel.
4- Junior is a good drummer 🎉
5-And lastly, Taryl should watch videos from a guy on UA-cam called "Taryl Fixes All". More than once have I have heard and seen Taryl say we need 3 things to make an engine run. Fuel, Spark, and Com-presh-yee-own. He also says the timing of the spark is important.
Its always a good day when you learn something. Thanks Taryl. 👍 Zombie Dave
@@WJCTechyman I never saw an episode of Red Green. 🤔
The 50psi is because of decompression@@ZombieDaveAZ
@@mikepink1337 Thanks Mike. I knew that before watching. Taryl stated in the beginning of the video that the 50 PSI should have been 100 PSI. And because I'm a little slow on the uptake I am guilty of dumping gas down the cylinder and just trying to get it to cough or run for a second or two. I confirm spark,fuel,and compression at one fell swoop. So in the video Taryl chased the low compression to the point of a valve job when it may or may not have been needed. So my comment was a round about way of saying that's 1 hell of a compression release.. lol Have a good day Mike
👍
@@ZombieDaveAZ if you like Duct Tape, you’ll love Red Green!
@@WJCTechyman "The biggest polluters overall is industry" no . Cargo ships that ship goods around the world are the biggest polluters. So stop buying anything that comes from over sea. "The largest ships create the same amount of pollution as 50 million cars, increasing the risk of diseases like cancer and asthma."
I just took apart a br600 that ate a exhaust valve. Broke at the stem. Good timing on the video. Thanks
thankyou to taryl . for always finding out manufactures defects. he is one top notch person. thanks for showing us..
Looks like a nightmare 😂
As far as your DeWalt battery, just go in there and bend the tabs a little bit and maybe put some Dox contact cleaner
Great video Taryl. I have a Makita 4-Stroke no mix Backpack Blower Love it, works great!
31:58 “You’re looking at a psychopath”. LOLOLOL! Got me laughing hard on THAT one, Taryl! 🙏👍
You don't work on handheld stuff no more? Then ya gotta change the channel name to Taryl Fixes What He Feels Like.
Or he could put out a sign "$250 Minimum Charge to fix your POS $400 Defective from Factory Handheld With No More Than $10 Parts Required"...but that tends to irritate people who couldn't get it fixed under warranty at the dealer.😎
I always get some of my screws and bolts put back in the wrong spot and manage to come up short one too.
Brilliant idea! Ever thought of just fit the flywheel, drill a parallel hole and use the taper as a guide, insert a piece of coat hanger wire as a key! (Drill dia. to suit the key width)
It has an easy start, when on back you pull cord halfway lightly than let it go back than pull forward lightly but quickly and it will start, I also learned that you can remove the side start and install the normal pull robe on back if you want
A 4 cycle that needs 2 cycle mix or an engine that runs on 2 stroke mix that needs valve adjustments.... German thinking for sure. Overcomplicated garbage! If he's running Stihl oil or 4 mix premix tell him to stop! Stihl Ultra is the worst garbage out there!
The newest Ultra is sooty, 'environmentally friendly' garbage. Say goodbye to your machine all because you want Stihl to honor a warranty. I buy gallons of RedMax 2cycle oil. Always runs great and so smooth at all speeds. 89 octane.
I have two of these blowers, one for over ten years with at least weekly use. The other is identical to the one in this video. NEVER a problem. I love them. I use non-ethanol gasoline in all my lawn equipment and synthetic 2 stroke oil.
Great job and again, thanks for walking us through the diagnostics. It was easy for the manufacturer or a basic mechanic to say that. You are on another level. Love watching and learning with your videos.
Wonderful work Taryl !!!
I’m with you, Echo 2 stroke over Stihl 4 mix. I have the identical blower with a no start condition that just came in yesterday. Gonna check that flywheel key first. Thanks Taryl!
Echo makes some fine equipment...I've used it for many years. Still have one of the old metal-cased chainsaws that nobody ever gets rid of, just keep repairing them.
When I was looking at a new trimmer I seen those 4-mix things. Decided piss on that, if I'm going to have to worry about valves and still mix fuel they could keep it.
We used two of those when I worked for the City of Glenpool, but they were just a regular two stroke. They usually started first pull, rarely it would take two pulls. Probably they were older models than that one. The city wouldn't have accepted stuff that wouldn't run. They'd have taken it back the first week.
Great information. Great video. Thanks
HAHAHA liked the drum solo!! I would have never thougth the key was only used for alignment, not mechanical hold on shaft.
The shaft and flywheel are tapered. Tapers are very strong. That's all that holds a drill chuck on a drill press.
I just watched a master in his field! Thank you for sharing your talent.
If adjusting the valves doesn't work, try adjusting the valves. But instead of checking once, spin it over a couple times and check it again. There is something not covered by the instructions. Essentially there are 2 spots where both valves are closed only 1 is correct. Whether your on the "compression" stroke or the "combustion" stroke matters.
Learned a lot by watching this.
Good job Taryl.
The dealer that looked at it, didn't want to see what was really wrong with it since it needed actual mechanical repair.
There's your dinner!
If they don't start good when new and they can't fix it I would want a new one under warranty. When they don't start right one of the first things you look for is a broking flywheel key.
The blower has a 2 year warrantee? That is why I like Echo they have 5 year warrantee
Pretty pathetic the dealer Brian took it to couldn't figure this out or was too lazy to check bulletins from Stihl. I got an older FS55 trimmer last year from a lawn service customer the dealer put a new carb and spark arrestor on, then gave up trying to get it to run right and sold him a new FS56. I determined the muffler was so full of carbon, it just couldn't breathe. After several soak with grill cleaner and torch cycles, muffler was all clear, and after a fine tune on the carb, ran great. Too many parts swappers and not enough mechanics at dealers IMO.
Taryl, back in the day of Kart racing, I never ran a key. Simply put a tiny film of valve grinding compound on the inside taper of the flywheel, put it in time and torque to spec.. Never had one slip, turned as much as 7500 rpm on a Briggs and Scrap'em 5 HP.
Interesting
I find it hard to believe a B&S engine could withstand 7500rpm.
@@jimjones1678 look up Dyno cams 117 grind flathead cam. The target RPM is 9800.....
@@jimjones1678Search for "Dyno Cams 117 grind flathead" The target RPM is 9600...
RIPPER🤩👍
I agree about Stihl. Forestry folks use a lot of Stihl chainsaws,
Eres el mejor de youtube, gracias Taryl y equipo
Nice clean bench Taryl. Don’t you love how it takes all day to clean it off and just an hour or two to get full again? Love the show. Enjoying the skits channel too.
This is the #1 reason backpacks bite the dust. Compression failure.
Good fix Taryl, you are a jet-pack scientist to repair that 4-mix!!
I would say next time do a leak down. Holding TDC and pressurize cylinder through spark plug, look for leak. Intake, Exhaust, or crankcase. LOL Leak down would not find that sheered keyway. So agree all the older stuff was made way better.
its a shame that everything you buy nowadays is so expensive but made so cheaply
Did you put locktight on the flywheel bolt....did didn't see.. just checking cause it will work loose I believe..thanks
This was a really good episode. Taryl stumbled across the timing issue by luck and skill. And the other repair man said he found nothing wrong with it.
That's because the other guy never bothered to look.
Had the same problem. I used a round file and notched the flywheel to accept a piece of drill stock. Haven’t had any problems since.
Good idea!
Only problem l ever had with that 800 was carburetor and fuel filter? Maybe a new short block? I don't like Stihl Ultra oil because the Jaso rating is only FB Amsoil Red Armor or Shaeffer oil
I like to do a leakdown test before I tare engines down. Because if you miss 1 simple thing before the tare down the you run into a fog when nothing seems wrong internally.
Yep.
I am working on a 2 troke Stihl back pack blower that is a manufacturing defect with a new design lower pan that is a revision customer not happy and neither am I it cost to much to do a simple repair especially since everything bolts to the block lMBO Stihl is getting poopie I have over 100 percent in the Stihl classes. Are they not as good I don't know I have no idea how long the tools have ran but 4 mix can have the problems of both 2 and 4 stroke
Redmax has been top notch in handheld stuff for decades. Since Husqvarna bought them out, it's been a slow decline. The new trimmer coming out is only a rebadged Husqvarna. The current BCZ260 is light-years ahead of everyone else. I'm buying all I can before I can't buy anymore...
Good video.
I know you probably already checked it but did you replace the spark plug? I don't know how many times I've had issues with bad spark plugs giving me tons of headaches.
If the plug was loose, that would give it low compression
Hey Taryl this is an awesome breakdown tutorial. I moved away from a lot of 2 cycle handheld repairs and limit what I do. The flywheel on these units should be redesigned.
Excellent video
Its obvioua that they are designing them to fail, with all the materials science they cant produce a reliable product? Ive noticed the brands bosch, stihl and bmw ,merch have flashy products that just do not last. It all started with the mobius cartel in the 20s and 30s where light globes were made to fail.such a waste of resources and energy,there is nothing wrong with making business, but engineered obsolescence is undemocratic .
I had a Stihl chainsaw that was literally impossible to start out of the box. This seems to be a problem for them.
I was going to upgrade my gas blower this year, but then in Portland Oregon they just banned Gas Blowers. Weird, I still see even the city still use them. But ban them for residential users.
Go to work at the city, then have them help you get one. If you're good enough, they'll probably help you out. I did that once here, lol. If it has the city's metal tag, they can't keep you from owning it if you got it legally. 😮
That isn't right, another freedom gone.
What about that yellow wire you were going to show us?
If that blower had been mine, it would have gone back to the dealer and I would have gotten a refund when they couldn't fix it.
But then we wouldn't have an awesome Taryl video to watch lol
I learned something new today the 4mix are all p.o.f I will stick with my old BR400 because it was made when Stihl and Echo were equal in quality. Good video Taryl.
"IT-DONE LAPPED-IN GOOD" Like a BLADE&MUFKIN in the Milk-Bowl!!!🙀🥣😻....LMFAO 😂
I have been hearing of shops not working on hand held equipment more and more. I don't think this is a good thing. Most of the time it's simple things like old fuel, metering diaphragm or spark plug. Occasionally I get a complete tear down. That's when I make sure the customers know it's going to be expensive.
I bought a parts br800 that ended up having a loose flywheel with a sheared key, I just cut a slot in the flywheel with a thin metal cutting saw blade and created a key from metal stock, and off it goes!!
Great job Taryl!
Wow, loose flywheel and bad crank seals and questionable ex. Valve!!!!
Great video as always Taryl. I will never buy an Exxo. Home depot had a sale on Exxo chainsaws, so I bought one. It would not start and I returned it for exchange. That second one would not start and the kid at HD thinks I'm a dumbass so he's gonna try to start it. He failed, so I paid 200 more to get a Makita chainsaw. It started with one pull and always starts with one pull. I love my Makita.
Makita EA5600F. I don't recall the Exxo model and as I posted, I bought 2 and returned 2 Exxoes. Dunno why you gotta be nasty.
I have had 3 of them with the fan slipping on crank hub and melting the cranks out of the 800s had it happen on one 2 times
That thing reminds me of my string trimmer, its a ryobi 4 stroke and has been crazy hard to start from day one. No more ryobi for me.
They should have warrantied the whole unit the first time he took it to the dealer and they couldn't find anything wrong with it.
Another fine job by the master 🙏
magic marker on valve face and seat to show low spots, prussian blue back in the day. How much did they save not having a separate flywheel key, a dollar?
They are $550 US and sold as a top shelf product. Locktite for flywheel nut? What is that pressure tester called please, is it in the store?
On the drumming I thought I saw the second coming of Keith Moon the loon. Really good video. Thanks
some Dy-kem or permanent marker on the face of the valve would let you see the contact patch a little better.
Chickanic down in Arkansas has been comparing the Stihl BR's to the Echo PB's on her UA-cam channel for a year or so, and she's come to the same conclusion as Taryl about the BR's. I've got an older Husqy backpack that gets homeowner use, and gotta say that I'm really happy with it. Clogged the rings once using bad oil, re-ringed her, and she still runs like a champ.
Instead of putting all those Stihl parts in that box, maybe you should put them in a large basket... because it's always been a "basket case"... Haha!!
That brother of yours is a genius.
If you can't see where the valve is seated use a dab of Prussian blue on the valve and move it around on the seat and it'll leave a good impression. That's a great repair hack so thanks to Faryl for the info. Please don't shut that door so we can hear that lovely sound of the leave blower. I love that sound at 06:00 when the neighbor goes out there and "gets it on"-NOT!
Im starting to hate all my stihl stuff. I’m switching to echo. I had this backpack and returned it a week later because of the same problem
Nothing like buying a piece of equipment to find it doubles as a rear delt and lat machine.
Value
Nice Catch on The Sheared Flywheel Key Taryl 😀😊and Crank Seal 😊
You legend.
I’ve got a BR700 that came out of the dumpster. Works great now but what a pain to work on! And ya that built in flywheel key is crap! 😡
People hate them and the 800
A bitch to start 😢😢😢
I have a brush cutter that was hard to start when hot, I thought it was the carb but it was the gap between the coil pick ups and the magnets was too great.
When it was hot the gap widened and spark was weak.
Did the business card fix and wala it works great.
love the show! thanks!
use your cordless drill to lap that valve in that way you could lap it right though the head
Fantastic job 🎉 You are amazing Tareyl . Thank you for what you do .
I never really liked the 800 C-E. I never liked the side start feature. I am not saying that it is a bad machine but I still stick to my older and trusted BR 600 Magnum which starts first or second pull since 2015. It also brings the power to the point because of the tube, which is nice when you want to blow away gravel and other stuff.
If I would need a bigger blower I might take a look at Echo, RedMax or Shindaiwa. They have pure two-stroke engines no Valves etc. and I think the quality is better.
Stihl motto: Stihl not gonna run
5 min to broach that old flywheel with a file and insert a hardened key. cheaper than replacing.
Gotta love these little engines that require you to go to medical school as well in order to work on them.
What made them design an engine like that?
It still burns the lubricant, only difference is that this is a 4 smoker.
Fine piece of equipment that.
The EPA is what made them design it. Take it up with them.
@@1pcfred I hear you
My entire comment there was sarcastic
@40:11 That's a shame because when I bought my Stihl chainsaw in 1979, Stihl was the best on the market.
Whenever a small lawn equipment manufacturer starts catering to the home owner market through big box stores, the quality goes all to shit.
Same thing happened to Homelite.
What a valuable video!
Because I have the 800c.
Now I know all about it. Thank you, Taryl
You checked the valves but how about the seats? Didn't seam to be the problem but you didn't know till it was back together. Maybe you checked while we weren't looking. 50 psi is that normal? Some kind of decompression to pull easier?
I have 2 of the exact same blowers...Possibly the strongest blower on the market today. Our blowers start fine on usually the third pull. We use Stihl HP Ultra premix and run the machines hard..these things don't want to be at half throttle. JMHO
Well Taryl ,you are so correct as to how these engineers keep coming up with less durable equipment at outrageous prices. And it's not the engineers to carry all the blame, it's also the bean counters who take it upon themselves to figure out where they can cheapout on whatever the engineers design and specifications.
Remember the Ford Pinto,the Taruris and Aerostar which catch on fire ,all because the engineers designs were ignored by management executives because the ignition coil and wiring to mount it to the firewall but in order to save 5 bucks / vehicle, management had the coil mounted on the engine.
So many examples out there including Boeing.
Where does all this stupidity come to an end ?
This is the exact reason why I watch your channel.
You have years of experience to know what is junky designs and what are strong durable well designed equipment.
But it's all about the money currency flow rate .
But soon there won't be any value to paper money and the value will be in the reliable, durable quality built equipment. 😊
Just like you .
I hate the new Stihl 4mix equipment I always liked Husqvarna better anyways some echo trimmers I liked as much as Husqvarna
Only stihl product I like is their chainsaws. And it only runs good on premix. Dogs big time on pump gas. MS 460
Good learning curve,This small stuff can be a real challenge,great job
I don't understand why you couldn't make a key out of metal or use one of those BS keys to fit in between the slot on the flywheel and the keyway on the crankshaft. It seems like that would keep it from slipping moreso than that tiny little edge sticking out from the center punch, or maybe I'm missing something, I'm sure I must be cause this one left me baffled 😂.
55:30 - okay got it! The divet was just to see from the front that it's lined up. Key has no holding power. Anyways I get it now
Since it breaths fuel/air theu the crankcase to lube the bottom end. , the crank shaft seals DO MATTER...
Id take echo over Stihl definitely but I'd take Husqvarna commercial grade equipment over em all honestly I've got a 326LX commercial Husqvarna trimmer still looks and runs like new compression is still high and I've run that thing hard for over 20 years now I think I bought it in 2002 maybe