Stihl BG86 common problem. Its NOT seized! Symptom/Cure
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- čas přidán 17. 04. 2019
- While I was putting the video together I googled the symptom of this Stihl BG86 handheld blower and it seems to happen enough that other guys call it a "common" occurance/problem. Well I guess we can add this one to the list. Thanks for watching and share this with anyone that has this blower. It just might save them a trip to the shop.
Can I just point out that the fly wheel bolt Is NOT a left handed/reverse thread as stated here. Anti clockwise to loosen clockwise to tighten.
Yes you can and thank you!
You are correct ! - the Other side of crankshaft is left handed thread
You just saved me $200! Thanks!
Happy Thanksgiving my new friend!! If you ever have a question for small engines this is the place to come. Doesn't matter what it is. 👍🍺
Thank you for this video!! I was about to buy a new blower thinking it dropped a rod. Thanks again
Happy to help out. Stay safe out there
Great video, thanks for sharing. It saved my four year old Stihl BG86 from the scrap bin.
The piston seemed to have seized up, and all three housing bolts were loose. The flywheel
was scarred, but no fin damage.
I think it's worth mentioning the importance of aligning the
key on the flywheel with the slot on the engine drive shaft. Take care do do so without damaging the key. Also, while the cowling was off, I cleaned and lubricated the starter
assembly. Years of gunk removed! The Stihl started right up and is rockin' once again.
I'm glad it worked out for you my friend and you made valid contributions that I overlooked. Thank you for that.
picked up one of these sitting next to the trash. Exact problem as in video. Only a couple fins were chipped. Put some loctite on the threads, and put it back together. Started on first pull. Cost to repair, zero dollars and a little time. Woohoo free blower.
It's crazy is t it?! Happy New Year Buddy.
Too funny. I was about to toss my "almost frozen" blower and just watched this. Same screw on mine but I did remove and loctite all 3. Too bad I bought a new blower a couple weeks ago 🤣🤣 Thanks for this!!
Now you have 2!
My BG86 «seized» up this morning. Thank God I found your video Dave; precisely the same had happened to my blower. It was even the very same screw that had come undone. Threadlocked it and reassembled. Started on first pull. Thank you for saving my blower!❤
My SH86C "Seized". After seeing this video, I was sure I had it licked, but all three bolts were tight under the flywheel. I took the other side off along with the shredder and impeller, and there it was. The loose screw was tightened, the unit reassembled, and back in Business! Thanks!
Thanks man! Happy thanksgiving! You are a small engine hero!
Dude, TY for this vid. I opened it up and there were the metal shavings! Spot on.
You just saved me $300… price of a new BG 86… Which I have now and did exactly what your video showed. Appreciate the video man. Good job.
Please be sure to like the video so people with the same problem will find it. Thank you for taking the time to comment. 👍
Thought our blower seized. So glad i saw your video. It was exactly what happened. Thank you
Great video!! Use my BG86 5 to 6 days a week(atleast 3 hours a day for 6 months now)..it went down 3 days ago. This video saved me a trip to the repair shop, more days of downtime and knowledge for the future. Thank you!!! My threads were clean with no loctite and not sure why they didn't put any on these...same exact bolt was the issue with mine as yours(although another was loose too). ⭐⭐⭐Video
What!? No 5 star? Lol
Wow, I have the same problem, just going to share this video with my guy at the shop! I thought the motor was seized! Thanks!
Awesome video brother. They brought it to the right man
THANK YOU >>>I just thought I seized my piston on a replacement Stihl I had bought for my other Stihl that I thought had a seized piston...luckily I saved the old one for parts...now I have 2 working blowers🙏🙏
Great video! Had the same issue. Saved me from buying a new blower. Ty!!!!!
From comments I have recieved I guess this is a pretty common issue.
Awesome! Thought my blower was done. Liquid Wrench and two flat screwdrivers and some tapping to remove flywheel.
Thanks for your video! I was able to fix my 6 year old BG86 that seized the flywheel this morning. The hardest part was getting the flywheel off.
Glad it helped you. It happens a lot. 👍
Just fixed mine thanks bro!!
Have the same problem and I’m pretty sure I caught it early enough. Haven’t pulled it apart yet. Good video thanks
If you read through the comments Rob, you'll see that it happens on the blower side too sometimes.
This helped me fix a Poulan Pro 4218 chainsaw. Thanks
I'm glad it helped you out my friend. Happy New Year to you and the family.
WOW, I 've seen a lot of people snap off a flywheel blade directly opposite of a cracked or mess up one and and never have a problem with it again or for a long time. That was old school on the farm or whatever before all the access to parts now. Oh, I see farther into video that you already had it covered. Haha, great job.
Very handy tip, , thanks mate
mine 56 just did this EXACT same thing, I'm getting ready to tear down, hoping this is the problem...TIA 👍👍
Dave your smart man somethin i found out is that you can't just put gas in them and expect them to work ya know
THANK YOU!! Thought it seized. This was it.
Same thing happened to mine. Same bolt. It knocked off more fins than in yours and stripped the built in key on the flywheel. I got a used flywheel off Ebay and loctited the 3 bolts for that housing.
Great video! Just subbed!
Thank you Pyro. I don't publish that often just cuz I like to show hard to find problems and solutions. Thanks again 👍
I had exactly the same problem. Easy fix!
I've got a stihl fs100rx I bought 4 used trimmers from a guy fixed and sold 3 except the stihl and I suspect it doing just that. I was wondering why I saw movement in the piston but it wouldnt complete a down stroke. Now I'm pulling it apart to check it out tomorrow hopefully that's it thanks!
so tell me what you found my brother,pleeeeease. 😀
Wow Just a torx bolt. Wow. Good find.
I guess it could have been much worse. Some guys reported very bad things happening when the bolt stops the engine very abrubtly.
So my mom takes it to stihl and they tell her they don’t know what’s wrong with it but it will cost more to fix than it’s worth. I live in another state so I tell her to hang on to it until i come home. So I get home and she tells me it won’t even crank. I go outside, prime it and it cranks on the first pull. So I’m like “what the H?”. I blow off the drive, the front sidewalks etc and it’s running fine but it has this hellacious rattle around the motor area. I start turning the blower sideways etc. trying to isolate the rattle and bam it “seizes”. Can’t pull the starter cord, it’s locked up. Go n the house start looking for t/s videos and this is the first one I pull up. I watch it and I’m thinking Yep that definitely could be the problem. Go outside, pull the cover and Bam! The screw on the top, behind the flywheel is sticking out and jamming the flywheel. I turn it in as much as I can with the flywheel in place and she is free as a whistle. Just have to pull the flywheel and tighten those screws and it will be as good as new! I may have found it on my own eventually, but this was like magic. Thanks! I have a feeling those Stihl guys probably knew exactly what was wrong with it and were hoping my mom would abandon it right there. Then they would have had a perfectly good blower.
Hi, how did you open the flywheel exactly. Im struggling to do it, because when im trying to open the flywheel nut, the flywheel keeps moving,,, I'm I doing something wrong , please help?!!!!!
The flywheel is small so it's not on there really tight. Take out the spark plug and put some pull cord in the spark plug hole. Turn the flywheel counter clockwise until it won't turn anymore. I think it's a 13mm socket and remove the nut that holds the flywheel. Leave the nut on the shaft but flush with the top of the crankshaft. That is to protect the threads on the crankshaft. Tap the nut while GENTLY lifting up on the flywheel. That should do it for you. Let me know.👍
I'm having the exact same problem, however, I can't seem to take the flywheel off after undoing the nut. Any ideas? Thanks
Do this at your own risk. Put a pry bar or screwdriver under the flywheel at the thickest part. Put the nut back on the crankshaft. Pry or push down on the pry bar and give the nut(flush with the top of the threads) a good whack with the hammer. It should pop right off. If you don't feel comfortable with this take it to a mechanic. Let me know how it goes please. 👍
Thanks for the video mate, fixed one of my blowers in 5 mins with this :D I've got another one with the flywheel not turning but it's not the screws annoyingly. What's the next thing I should check?
Hi Dave, pull the spark plug and see if it will turn over. Another problem with these is if the metering diaphragm allows fuel into the crankcase it will hydro lock the piston. See if fuel comes out the spark plug hole. Try that. It is easier if the pull cord is off and you can wiggle the flywheel back and forth.
Is it still running? That one has been used a lot to say the least.
Sure is.
Wow, mine just went thunk today and wouldn't turn over at all! Pulled plug everything looked good now i,m betting its the same as this.
Hey Noel, I hear this is fairly common. Put medium loctite on it when you put it back together.👍
If one teeth brocken what happened it will work or not
Watch the video again. Break off the other fin 180° from the first one. I show it in the video.
My chainsaw flywheel one teeth completely broken is it work properly
@@democracy5753 some guys just break one fin on the opposite side.
Thanks!
Thank you Cody
I fixed that problem thanks to you. Now I can’t seem to get it started and was wondering if there is any obvious reasons why as I am stumped lol?!
@@codylarocque4654 check these 3 things. Spark (pull the spark plug ground it to the head and pull the rope while looking at the gap on the plug) if you have spark, dip the bottom half of the spark plug in the gas tank and put back in the spark plug hole. Hold the throttle wide open( be sure its turned on) and pull til it runs for a second. If all that goes well you have a carburetor issue. Let me know.
Hey there. I do have spark as I grounded the plug to the motor (I seen spark) and I also dipped the plug in the fuel tank then put it back in and i still can’t get it started.
@@codylarocque4654 hows the compression?
I wanted a second blower to do my friends' yard... they bought a new one... The old one is doing exactly THIS, including the shavings under the flywheel. (Am hoping I can do the prybar thing right!)
Then, we have two... -Cheers, Man!!
Gentle steady pressure under the flywheel and a quick firm strike to the shaft. Good luck brother.
@@ZombieDaveAZ
Mahalos from Maui, Dave!!
Omg i go to repair he say jem already rm800 for fix it back my blower flywheel stuck cannot move jem
Did my video help you?
Looks like the seals are bad too.
No question about that for sure! Thanks for stopping by. I appreciate the input.
That old girl has done some hours !
Very common problem, I've done a few like that. Found one in a skip the other day literally under water! Torx had come out on FAN side tho so check both sides. Flywheel was fine as binding on the fan.
Thats a great idea. Check the fan side too. Thanks very much.
Thats a great idea. Check the fan side too. Thanks very much.
Yeah behind the fan is 3 more torx from memory. One had stripped from vibration but luckily was enough length behind to put a lock nut on it and worked a treat.
Yeah the 3 under the fanwheel vibrate loose. I use threadlock on mine now. Same on the exhaust muffler.
This guy didn’t even show us how to remove the fly wheel waste of my damn time
If you read thru the comment, you'll see how thankful EVERY other commenter was. YOU on the other hand want everything done for you. If you want to see a flywheel removed you could say: "Hey Mr Zombie, do you have a video on how to remove a flywheel?" But nope, you're the only dick in 4 years. Don't be a dick, nobody likes a dick. I hope I didn't waste your time again. Don't forget to subscribe and a sarcastic reply. It helps the algorithm grow my channel. WIN WIN for me.