Stihl won't throttle up or stay running? First thing to check!
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- Опубликовано: 27 авг 2021
- If you found this video helpful, please LIKE and SUBSCRIBE!!! Thanks for tuning back into Chickanic! Today we go over one of the most common problems I see with units that come into the shop to be repaired. Weather you have a Chainsaw, blower, trimmer, etc, this problem can occur all of the sudden and stop your unit from throttling up or running at all. Hopefully after watching this helpful hint, I can save you time, money and frustration in the future! This problem can occur on any make or model such as Echo, Husqvarna, Shindaiwa, Crafstman, Troybilt, etc, but I do see it most often with the Stihl's because of their cylinder shaped spark arrestor screens.
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Although very informative, these videos are for entertainment purposes. Please use all possible safety precautions when repairing and operating your small engine equipment. 
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Thank you, after days of work, you fixed my blower in just a few minutes.
Glad that we dont have mud bugs here.
I was looking for a lightweight blower for my deck. ruclips.net/user/postUgkxgioZQl3J5wPGAeDINzbieKbT5qomSEx3 There are some huge trees around my house and the leaves and pods drop all over my deck. Having to move furniture around to sweep has become too big a chore. This blower was the answer. It is light enough for this 70yr old lady and powerful enough to blow all the tree droppings off my rather large deck. Thank you B&D. Be aware the cord is not included. I use a 3 prong outdoor cord 25' cord for my 12' x 20' deck. The cord retainer works very well, but don't try to pass the plug through it. That is NOT how it works. You just have to loop the cord and it works great. One of my best purchases. Very happy.
Love the fact that you admitted you were stumped people think us small engine mechanics know everything but everyone gets stumped:) great repair
Thanks for watching!
@@Chickanic Just a pointer. I love women with long beautiful hair, they look even better with long hair. Your hair looks super great, makes you look really beautiful and all. HOWEVER, when working on mechanical issues such as this, better to tie your hair up or something, stick it in a hair net or whatever. Hate to see your beautiful hair get caught up in the machinery. Accidents can, and do happen quickly. Just a safty reminder, that's all.
@@Chickanic >>> You were stumped? Well, at least you did not have to go as far as THROW HOLY WATER on it and then chant _"The power of Christ compels you!"_
😊😊😊
@@Allan_aka_RocKITEman I have been tempted to do that in my shop! Some people's equipment seems genuinely cursed, no joke.
@@michaelrockwell9691 >>>
😲😲😲 😊😊😊
Yes ,I've found that out the long way, we call them mud wasps in the land down under
I knew exactly what it was before you showed it. Been there and had to clean out a few myself!! Those little bastards are a royal PITA!!!
I have a BR550, this video was very helpful. I always burn the carbon off the spark arrestor when I service the machine, now I’ll take a closer look at the muffler.
I ran into this exact thing last week. We have a unit dedicated to spraying an anti corona virus mist for the County and it is rarely used. Thing is brand new! I disassembled that dude and double checked everything and in the end after wasting $ , I found the damn dirt dobber!
All the while folks were waiting for me to spray the virus away😂. I was more worried about getting it figured out than corona virus, but…. I’m glad to know it wasn’t just me. Great video thanks
Thanks for an excellent video - not only did I learn about the muffler fix, but a quick Google search let this Brit add 'dirt dauber' to his vocabulary!
Fun diagnostic!
I always try to remember, stuff is supposed to work. If stuff doesn't work, then it's time to "check all the things" and not assume something works because "it never fails". If it never failed, my stuff would be working, wouldn't it?
Finally!!!! Someone who doesn't just record a video of their incredible skills figuring out the blower has bad gas!
You helped me out!! Stihl BR 340 that I have been working on for almost a year! Your fix worked.
As soon as you said they removed the spark arrestor I knew what it was!
Yeah. We get mud wasps in Australia too. They block any hole in everything
About 6 years ago I figured out the easiest way to fix a Stihl....buy all ECHO been happy ever since 👍
Just wanted to say thank you. My Stihl SH-85 handheld blower had the same problem. Put new gas in it, and had the same issue. I removed the spark arrestor (threads in with a 15mm socket), and it runs better than it did brand new!
I can SEE through the screen, but it still chokes it out as soon as I try threading it back in.
I'm going to run it without for a while, until I burn the carbon out (there was no mud dauber nest in there), and get my hands on a new arrestor assembly.
And everyone thought the screens were only for spark arresting, the second function is to prevent insects and foreign debris fro plugging up the works!
Great job on figuring it out!
I was also stumped with my blower not working, after watching your vid, I checked the one thing I had not checked ( the spark arrestor ) took it out, mine has a filter on it, chock a block full of carbon, without it in my Sthil BG 86C blower started first pull. Thank You!!
Hello young lady. I am 75 years old and have been watching you for a good while now. You are definitely the best that I have watched. I saw that you moved onto your own property and had plenty of new parts and was wondering if you had a throttle cable for a 125BT Husqvarna backpack blower that you would like sell?
Thank you so much…..at first I thought it was the carburetor…NOPE..it was exactly what you said……..
I've heard an expression for years, "If you hear hooves, think horses not zebra's". Thanks so much for the videos!
"Don't outsmart yourself" Mark Price-
His words, a quote from the best/smartest mechanic I've ever known. And, i'm an ASE master certified auto mechanic.
Always amazed that the mub daubbers get into everything.
Yep, this just happened to me. Great video, thanks!
Less then a teaspoon of dust blocked the muffler and resulted in enough back pressure to keep the engine from running? That's a tough nut to swallow but I won't argue. Love your videos!
I thought you were going to find that the spark arrestor had rusted off and fell into the interior of the muffler... good job!
You are not going to believe this, but I went into my shed today to put a generator away and looked over at the Stihl BR350 and noticed mud on the top right bolt to the back cover. I then looked down and the exhaust port had mud in it. I took it out of the shed and cleaned off the mud wasp mud from the bolt then saw that the mud on the exhaust port had fallen off. Sure enough, the spark arrestor screen was in place and they couldn’t make a mud nest in there. Guess this problem is more common than I thought. Glad I saw this video yesterday. Thanks Chickanic.
Thank you so much for letting me know! So glad I could help!
Very good to find out the problem and yes got to take care of machinery
I'm gonna stop calling it the spark arrestor screen. From here on it's the dirt dauber blocking screen.
It for sure is!
I had proof of that today on my BR350.
Seen it a few years back on an old Echo leaf blower. A real head scratcher……
that was always the 1st thing checked
D Penrod I want to thank you for the spark arrester. The very next time I tried to use my weed eater it had no power. Guess what plugged spark arrester, you saved me a lot of money.
That's what I love to hear!! Thanks so much for letting me know!
So after watching this video i immediately dashed into my garage and took the muffler off... 3 months out of service fixed in 5 minutes
THANK YOU!!!
I just wanted to say thank you for the how to video on a Stihl leaf blower
It saved me $35.00 for just to look at it. It’s just over a year old. The screen was totally clogged with black soot. Pulled it apart and cleaned with brake cleaner waited for it to dry and put never seize on the threads. It runs like new again.Thanks John
You're one of the best small engine repair persons on RUclips, Chicka. Analytical and thorough, you work your 'process'. Being easy on the eyes doesn't hurt either!
Wow, thank you!
@@Chickanic i agree from the UK 🙂
You just saved a lot of money mine is doing the same thing. It's a string trimmer 35
I worked on small engines here in Southern Illinois for almost 30 years. I couldn't tell you how many times I've seen this happen. You run into some crazy stuff on occasion. Watching your vids are a treat my dear. Keep up the good work!
Thank you!
Garciaboy80
Where are you located, I’m in Edwardsville,IL
@@c50ge Small World! Highland here.
Where can you buy these long torqs bits? T20 t25 t27 ....
The mud dauber nest jammed the muffler bearings. After you cleaned it out, it ran great!
Did exactly the same thing on a backpack blower . Tried couple of days thinking the fairy godmother would fix it. Then I found the mud dobbers work. Thank you for saving the day
Every piece of equipment I own is a different brand. The rider is Husqvarna. The push mower is Ariens. The hedge clipper is Stihl. The blower is Bowlens. The line trimmer is Shindaiwa. The battery chainsaw is Kobalt. The convertible mini hedge trimmer is Ryobi. 🐀🐾
One thing I learned from being an outboard tech is on the screws use a driver to start them. Put the screw on the threads and turn it backwards until you feel it drop in the threads Then your good to go and no stripping 😎👍
Agreed. Also on outboard and stern drive gear case large cover nuts.
I guess you could say that job was exhausting...
But just because you CAN do something doesn't mean you SHOULD do it. lol
Such an easy fix, but also easy to miss. Thanks for the heads up.
Cheers from New Brunswick, Canada...eh.
Often mistakes will teach us much. I prefer lessons with mistakes discussed. Can save me from making them.
I bought a used pressure washer for $10. Bucks and it had the same issue of Mud Dobber Wasp that had clogged the interior with nest. Cleaned it out and cranked it up…saved myself almost $300. Dollars from buying new! Thanks Chicanick! - Anna
Yes I had a lawnmower it was a two cycle lawnmower it would not start it like it's like your backpack it would spit once and that was the end I ended up taking the muffler off and I got a whole bunch of beetles out the master made it home in it for the winter which they were dead got them all out and it ran fine keep up the good work
Haaaaa.. Love it. Dot know what a mud dauber is but in Australia i had the very same problem with a generator when a European Wasp got into the exhaust and built a nest.. Took me and a mechanic 2 hours to sort it. Now i always plug the exhaust with a bit of rolled up cardboard so they cant get in. Just gotta to remember to remove it before starting!
Those little buggers will build a nest A N Y W H E R E !!! GREAT catch !! We would THINK that the gas fumes would discourage them from this spot ...But NOOOOOOOO !!! LOL !! I'm in NE NC and these little suckers are EVERYWHERE !! I'm AMAZED at the places I find them !! It's like they think it's their JOB to plug every hole on the world to make their nest !! LOL !! I've never had this happen YET ! Thanks for another GREAT informative video !! Have a CHICKY DAY !!
I didn't watch more than a couple of minutes of your video before I knew exactly where you were going with it. I have the exact model blower you're showing, and had the exact same issue. Mine would start and idle, but was sluggish when you revved it, and wouldn't make full power. I tried adjusting the carb, with no improvement, then decided to check the owner's manual. Guess what, they tell you the spark arrestor is bad to clog, but tell you to take it to your Stihl dealer to have it serviced. It's like trying to force a round peg through a square hole, but you can get the arrestor out without taking the whole front off. Instead of cleaning it and replacing it, I just threw mine away, all it is good for is to clog again in 5 more hours of use. It's one of those Federal regulation things, they're afraid you'll set your leaf pile on fire with it and all gas-powered lawn equipment now has to have a spark arrestor in the exhaust.. I did replace the small rectangular nozzle on the muffler, but the round screen that fits down inside the muffle got thrown in the spare parts box, just in case I have to clean and reinstall it when /if I ever sell the blower.
All that said, I've yet to have to dig out a dirt dauber's nest from a muffler. The daubers around my house seem to prefer the open ends of my pressure washer hoses and fittings. I've also had a hornet's nest under the hood of my tractor, and it got built in less than three days between the times I used the tractor. Pretty wild to climb on and start it up, and have white-face hornets come pouring out from around the hood.
I started getting snow blower inventory ready last week. By the time it snows here in Flint MI, I plan on having 20 snow blowers ready to go. 95 Degrees here today with heat advisory and I'm playing with snowblowers.
End of August we start getting the salt spreaders and plows ready and see what doesnt work since it was put away. You’d be surprised at just how much can go wrong while equipment just sits. Don’t wanna wait too long until it snows to find out that your equipment isn’t ready. And this way we don’t have to rush to get everything operating correctly. So I understand.
@@landscapingspecialist where are you located?
Liked to pulled my arm off one time because of a dirt dobber. Great video.
I love seeing some of these older videos and then your newer ones and on how far you came. And the tools you use. Its awesome. Because of you and my passion for small engines im working towards starting my own small engine repair shop. And its nice to see what tools you use and things you have been through to give me ideas to check over. But not that long ago i was asking help from you and never did i even get a comment back or anything but just so you know i finally got the Endoscope that you love to use. It is amazing. I absolutely love it and i use it all the time. So i want to say thank you for everything you do and show us in your videos it has helped me out so much. Just wish you would right back some of you fans that is dedicated in your videos and business. Wish you well bre.
My sister from another mister. 😃 We became friends because of our love of Bulldogs. I love listening to her rock band Hooker Red, and her awesome gardening skills. Bre, you are an amazing all around natural, beautiful, talented, go getter. Always amazed and impressed. Much love. ❤️❤️❤️
Awww! Ditto kiddo! You know I love everything about you! One of these days, I'm showing up! OR we're going somewhere together!
I learned the spark arrestor from you some time back. Cheers Love!!
Mechanicals always leaves you with new or forgotten scenarios. Still, I enjoy these videos
I was working on an arctic cat 400 for a customer. For the life of me could not figure it out. It idled good and then died under throttle. Fuel flow was great, clean fuel, carb was freshly cleaned, good spark, everything checked out. Went to grab a tool and noticed something on the way back. Muffler was full of mud dobber dirt! Cleaned it out really well, thing fired up and ran great. Also had a can am ds90 I bought for cheap and was flipping. The spark arrestor was so clogged up that it wouldn’t move. Cleaned it up and it worked perfect. I always check mufflers and spark arrestor first thing! Love your videos keep it up👍🏻
I'm thinking the spark plug is fouled out but you made made the discovery I would have not even think about 😂😅
Wow. I knew as soon as you said "I'm in the south", I knew what you were going to find. We live in east Texas and they are a horrible problem here. They build nests everywhere. We had a $4000 Generac generator which shorted out at about 1 year old and destroyed some of our solar off grid equipment. I had a certified Generac service rep out and he found dirt daubers had shorted out the voltage regulator which was in a box marked 'DO NOT OPEN - NO USER SERVICEABLE PARTS INSIDE". The real kicker is that Generac would do absolutely nothing for me even though it was still under warranty. Naturally I bought a Kohler generator next and covered all vent holes, no matter how small, with an even smaller screen and it's been working great for 3 years now. Yes, I DESPISE GENERAC AND DIRT DAUBERS!
Well done on the leaf blower wee up here in Scotland we don't get dirt dobbers, but I enjoyed the vid, by the way I like the shorts 😊👍
Thank you for the information top notch I fix my blower without taking it in Carl from New Brunswick
Brake clean really breaks apart those little buggers nests haha we get them constantly here in PA I'm always getting these nests off my railings and in my shed
Was getting a little frustrated with a BG 86 in my shop that seemed to do everything just fine except it was just "gutless" and wouldn't throttle up. Checked everything, messed with the carb, nothing was working. Started looking for ideas and you've helped me out in the past so this video came up. Finally realized (very big thanks to you) that none of the other equipment I work on has much in the way of spark arrestors, but these blowers that come in once every 7 months or so have that fine screen that goes into the muffler. Sure enough, I take it off and it was almost airtight. In hindsight it makes perfect sense and it's a simple thing to check and I just plain missed it. Gave the spark arrestor a good bath until it was a proper airflow friendly screen again and heeeeey, would you look at that... throttles up like a champ now. Love your videos and keep doing what you do.
Seen this on snowmobile mufflers and mice nests. Like the videos.
I had serviced my BR350 before the season started, blower was running fine one week, the next it wouldn’t start. found spark arrestor coated in mud. Thank you.
I’m having trouble with my BR600 that sometimes is hard to start and guess what?
That’s exactly what I am going to check.
Thank you for the great video! 👌💪
Have a Makita garden blower that I had given up on. Stripped and rebuilt the carb, reset coil clearance, changed fuel line and filter, then saw your video. Took exhaust off and blower fired first pull. Cleaned and refitted and blower works a treat. Thank you.
I have a Craftsman ws2200 weedeater that wouldn't throttle up or stay running, and I figured out the issue with it once I watched this video. My problem was the exhaust clogged up like your client's Stihl blower. You helped me look outside the box, and now it's fixed. Thank you, I also subscribed!
Thank you so much for this solution. A neighbour of mine has a post hole digger that is brand new after one season and would not run on anything but full choke. On your suggestion and after digging the mud daubers out of the muffler, it ran like a charm. You're awesome
14:33 that's what the like button is all about. Great job and thanks
Love your work!
FS91, works at full throttle, let off throttle to move it dies, will not hold idle. I'll adjust idlethis week and get back to you. BTW only has 10 hours on it, at 4 hours had to replace the Coil, twice!!! Shilh had a problem with Coils!
I had never heard about the fine vs coarse threads for metal and plastic .G eating a big like from me .
Thank you - clogged spark supressor - now tossed in the bin.
Who woulda thought clogged w dirt dobbers ? 😅 felt sorry for the larva tho . Your intelligent hands on mechanical abilities makes it intersting 🌻
I hate working on those small two stroke engines. They never seem to run right for any length of time, no matter what brand they are, except for my Husqvarna weed eater. It's the first Husqvarna equipment I've ever purchased but I'll definitely be buying more of them.
Fabulous!!! Something to check on my Stihl saw that's giving me some fits...
LOL!!! I knew exactly what was wrong when you started this video. I had the same issue with a Honda 1000i generator. when I received it someone else had already attempted to repair it. This unit would only fire about 6 pops and die, no matter how many blisters I worn on my fingers it would not fire again. I would remove the carburetor, check for fuel, dirt, water, fuel pump flow, clogged fuel filter, low oil pressure shut off sensor. Each time I reassembled it would hit for 6 pops and die. I disassembled the carburetor and discovered the air Venturi tube was missing. Eureka, this must be the problem. after pricing a new tube for $25 I decided it was wiser to just buy a complete carburetor from Amazon for $35 as it would have the proper tube. A few days later I installed the new carburetor after it arrived and I can't begin to tell you my disappointment when I pulled the starting rope and still had the same issue.(6 pops and die) I then re-installed the old carburetor with the air tube from the new carb and tried again. SAME RESULT. Almost at my wits end and wanting to adjust the generator with a sledge hammer I quit for the day.
After sleeping on it for the night I decided to remove the Muffler and try running the unit without it. after removing the muffler I attempted to blow air through it with my mouth and it was completely clogged. No air at all. I pulled the start rope and the generator ran on 1st pull, albeit a bit loud. I was elated and Frustrated at the same time. i Stuck a screwdriver in the muffler and broke the dirt Dauber's plug. I Blew out the muffler with compressed air to ensure all dirt was removed and then could easily blow through it with my mouth. Re-installed everything, cranked unit and it ran but was surging at high speed, with or without load. Replaced the old carburetor with the new one (I was an expert at this by now) and the generator ran like new!! Yeah. Good thing I decided to get a new Carburetor!!!
This was a small engine Butt whipping I will never forget and thank my Sister for bringing me this educational project!! (NOT)
Thanks for your video. It made me Laugh!!
From Friendswood Texas. Remember Friends Would, if Friends Could!!!
Hi I'm nick from Lisbon Portugal 🇵🇹, love your videos, keep up the great work 👍
I used to live in Dumas, AR. When you said Arkansas I thought Mud Dauber. They are a plague!
I live in the northeast. Never even knew what a dirt doubler was until I Googled it . Sounds like you have a whole lot of problems with them down there !
freaking bingo. Dam I was pulling my hair out. Was gonna buy a new carb but it was clean, then a coil until they said its a 116 bucks. I pulled my spark arrestor off to clean it but for some reason I couldn't find it on my bench ;)
It’s mud, dobber. Lest that’s what we call’em in Kentucky lol. Love your videos. Thanks for your time and knowledge.
What a beautiful. Yeah the machine too. Thanks for for the tips
seen a couple plugged mufflers in my time they were from heavy oil mix. burn them out with a torch.(off the equipment of course). seldom see mud dobbers in northern pa. good find. if ya cant breathe it out ya cant breath it in. engines are just air pumps.
When I moved from Seattle to rural Kentucky 11 years ago, I bought a used Craftsman d2000 if I remember correctly. It was a V-Twin Rider mower. It had a weird problem a couple of years into using it. One cylinder kept bending pushrods. In hindsight this sounds stupid but I kept having to loosen the rocker and using a hammer to straighten the push rod and putting it back together and that would work for a while but it kept doing it. I bought new push rods off Amazon but I ended up never putting them on because in the long run I ended up buying a large zero turn since I'm mowing 9 acres now.
But the problem really made me nervous even about my zero turn. The problem was that a mouse had built a nest around that cylinder under the plastic shroud and it was causing the cylinder to overheat. At the beginning of the season I always remove the plastic shroud and check my zero turn to make sure that that hasn't happened to either of its cylinders. I store it in a heated garage with plenty of mouse traps so I just hope it doesn't happen halfway in the season.
Hello from D.R. Small Engines in Garland County. Keep it up!
I have had this happen twice. I made a stopper from a used wine cork to keep them out.
An old and very wise saying: "Everything you miss for not knowing; you will miss a thousand things for not looking!"
Similar thing with my BR350. Had the coil and carb replaced. Muffler screen was clean. The culprit was the tank vent.
thanks chick i just learned about plastic and metal screws ...
Glad I could help! Thanks for watching!!
I took my spark arresters off all my Sthil equipment and now they all run a lot better
My back pack blower wasn't running, I found inlet & exhaust valves needed adjusting. Valves weren't closing properly. I've removed spark arrestors out of all my garden equipment.
Exhaust obstruction is a big problem with Stihl backpack blowers.. My new BR430 with 4 hours on it started having throttle issues.. Reset my carb H/L and then decided to check the flame screen because it wouldn't run correctly and sure enough, the screen clog was the culprit.
Good job on diagnosing this one. I I've way north. Upper peninsula of Michigan and we have them here also. We call them mud daubbers and they will fill any cavity they can get to.
Fun fact, they will kill a spider and put in cavity then lay single egg in cavity and seal with dirt or mud. Instant nutrition for larvae.
Nice video again, thanks
All the way from the land down under ❤️👍Australia 🇦🇺
I liked how thorough you were and how you showed everything that you were doing and how to do it. I also like how you showed before and after of how it was running and you gave warnings about the wrong screws , etc. This was an excellent and very informative video. You go GIRL!
Thank you very much! You fixed my BR600's recurring problem. I'm in Canada, and primarily have been using it to blow cold, dry snow, with only occasional warm weather use for dust and leaves. Once a year, it starts to stall after a dozen uses, and once a year, the certified dealer looks it over claiming my gas/oil mixture, cold air condensation, etc. And it works after their service and cleaning. Well, after your very well done video (esp the before clip confirming my same problem - starts but stalls after throttling up), I took the cover off and checked the exhaust port. The spark arrester screen was completely carbonized allowing no airflow, and the exhaust area also had build up. Cleaned it up, reassembled and fired it up. Damn, it throttles up like new! Thank you, thank you. And if it happens again, your implication about the arrester screen is point taken....and I'm mostly a winter user with no fire hazards around. All the best to you.
You rock on this one. I had the same barely start issue. After watching your video, I pulled the muffler and the outlet was completely blocked with mud dobber mud. Runs like new now. Thanks
Thank You I was having same symptoms and thought it was fuel issue. We have a lot of mud daubers around and I have taken away nests from where blower is stored. This time it was not a dauber,but the screen was clogged. I did watch your other video on the HP Ultra oil, and fall into that category. Non ethanol fuel,dedicated can,only mix 1.5 gallons at a time,so I was suprised at the build up on screen. Fortunately everything else looked good and clean.
thank you kindly for sharing all your knowledge.I'm a structural digger and high rope access worker.I rig tents for music and arts festivals in the summer,up to 5I capacity,and work as a tree surgeon in the winter months.I do a lot of limited access tree work.taking them down in sections and strapping them to a steel Nasser to avoid roofs,greenhouses etc.using a husky 395xp,and a small parked brand saw,which for the 177 Euro it cost,has done me proud,and is very reliable.used to do landscaping and garden maintenance,and I knew the company as they make very good lawnmowers.so thanks again.it's good to share knowledge,and can strip down,then and maintain all my own equipment.no point in trekking into the woods without basic tool kit.off grid,and pretty much self sufficient.a hundred thousand blessings be upon you and yours.thankyou,and be lucky.dominic'maddog'mogridge.West cork,republic of Ireland X
Ok, that's one I'd never have thought of.
When you last started it I knew what it was. Back in the '90s Homelite trimmers had a muffler that was very prone to this. In this area it was fairly common.
Thanks for the video. You reminded me not to make assumptions. I saw exhaust and assumed it was clear. lol It was not. It was just a dirty screen, but you made me go back to the basics again.
On the mud dobber topic, I was asked to fix a jet ski lift once. It would hum but not go up or down. After taking the motor ends off, I found a mud dobber apartment complex!!! Compressed air for the win!
Great job! I never knew that the muffler would prevent the blower from operating. Thank you for the advice. 15:30
Engine has to be able to exhale what it inhales