✅Click here for a similar Tachometer ➜ amzn.to/3FSsGqb For more videos like this, check out: 👉How to Adjust or Tune the Carburetor on a Leaf Blower ➜ th-cam.com/video/DWPUYJiF6KM/w-d-xo.html 👉CORRECT WAY To Tune The Carburetor On A Chainsaw ➜ th-cam.com/video/M6T5JoGXcHY/w-d-xo.html 👉How To Adjust Or Tune The Carburetor On A Weedeater ➜ th-cam.com/video/gmhxTvGRtCg/w-d-xo.html You can connect with Steve here too: ✅Visit Steve’s WEBSITE ➜ www.stevessmallenginesaloon.com/ ✅Visit Steve’s PARTS & TOOL STORE ➜ www.amazon.com/shop/stevessmallenginesaloon ✅Follow Steve on FACEBOOK ➜ facebook.com/stevessmallenginesaloon ✅Follow Steve on INSTAGRAM ➜ instagram.com/stevessmallenginesaloon/ ✅Follow Steve on TWITTER ➜ twitter.com/SteveSaloon
Just curious my husqvarna blower comes with a molded hose to get better air speed and a straight hose which is better to run or is my blower tuned for both
Steve, several years ago I did an adult education small engine mechanic course in an effort to learn some new skills. Believe it or not, I have learnt more from watching your videos than I ever did in that course! You make an excellent teacher and know how to pass on your knowledge and experience really well. Thanks for the continued education and keep the quality content coming, I love it!!
I’m 17 and started working with a landscaping company around a month ago I have learned a lot from you videos and plan on continuing to learn from you! Keep it up bro 👌🏾😊
When I have a problem with my yard machines, your the first one I come to watch. Now at 71, I know some things, but your always teaching old dogs new tricks. I knew this one a long time ago but forgot about it. Thanks for the reminder. Where's the beer?
This guy is great . Loaded with common sense info from a normal guy who has a beer while fixing temperamental gas garage items . Tons of good tips like warming up your 2 strokes so you don't score the piston and tells you why and how the piston scores . If your a guy who always fixes your own stuff like me , this is a must subscribe ! Great job Steve
Thanks, Steve. I retired after 43 years of being a Combat Medic in the US Army and a Civilian Paramedic. I could diagnose and fix the human body in a ditch and in any type of light or weather, BUT!!! I was scared to death to try and fix my small engine machines. You could say I was a mechanic to the human body, but I couldn't figure out an SAE tool kit. Thanks to you,Chickanic, and a couple more excellent mechanics. I now have every piece of equipment up and running. I continue to learn from you guys. Thank you soooo much for giving me the courage to tear em down and fix em. THANK YOU!!!!+
Wow Steve, I knew doing that isn't good on blowers, but as soon as you switched them tubes you can hear an instant change in rpms. I would have never thought they would increase that much. Thank you so much for risking your blower to show us. Love your content. I've learned a ton from you. WE ALL APPRECIATE YOU MORE THAN YOU COULD EVER KNOW!!!
That rpm increase is amazing. I would never believe it could increase that much, until I watched this video. Thank you for producing such good content.
I have been watching your videos for awhile now . your a smart man . if I have problems your videos are a tool in the tool box i will us . Thank for all the help keep up the good work.
I had a leaf blower (Homelite) that literally almost BLEW UP and I didn't know why, but when I saw this video, it changed everything in my head. That blower had the flat-end tube. Turns out that piece of garbage wasn't able to handle the RPM cuz it was so cheap. Then I got my STIHL and I kept the default tube on. Lesson learned, thanks! 👍😁
Your videos already helped me fix my stubborn Ryobi leaf blower. I already had a DD carburetor adjustment tool after buying a multi-pack for my Homelite String trimmer. Now, this video stopped me from getting greedy with the air flow. Thanks much.
Hi Steve, can I just say you have helped me no end in doing those little jobs in the service of my garden equipment. I just wanted to say that I have a stihl leaf blower and it came with a stihl restricted end to the main tube and I find that as you say it produces more blowing power and as a result I dont have to rev the engine as much so there's no need to over rev the motor at all. Less stress for the motor and not as much fuel used Just a thought.
Good point Steve. The last 2 Stihl BG86 C+E hand held blowers that I've purchased actually came with a restricted flow "flat" tube and the regular "round" one. I have never used the flat one but it is supposed to raise the exit speed from 154 to 190 MPH (at lower volume of course). I'm sure they designed the flat tube to still be within RPM maximum spec. I just never had a use for it. Supposedly good for cleaning driveways and peeling up wet leaves ETC. Great channel, glad I found it!
My Stihl came with two nozzles. The flat one has higher velocity with less volume, it's for flat surfaces like your drive way. The round, low velocity, high volume one is for your lawn. I find myself using the round one the most.
Perfect timing. I was just explaining to a guy at work on Friday why his blower was f-ing up with a tapered end on the tube. Good video! Just gained my sub
The gutter-cleaner extensions must affect the engine as well, then? The longer you make the tube, the more resistance - much like taping off the tube a bit.
I would never be dumb enough to do something like that, but it did give me a lot to think about with motors and other aspects of small engines. Great content!
I've never seen or thought about doing this nonsense. I've had the same electric blower for 10+ years and even use the mulch feature every year and the thing runs like a champ. LOVE THIS CHANNEL!!!
I found a Husqvarna 125BV in the dumpster that really wasn't in bad shape. I took it apart, cleaned the dirt off of it and replaced the spark plug and it runs great. The 3 piece blower tube had a crimped tip that looked like it was made by Husqvarna. I took it off and the tube still seems long enough. I decided to keep the crimped tip and use it without. I haven't tried it yet but I'm betting it will work fine. Thanks for the tip.
Echo sells an attachment that is a 10 foot length of tube with an elbow designed to clean gutters on a ranch without the use of a ladder. What is the effect of these type of attachments on the RPMs and engine load?
Since no one replied, let me try. Go by your ear. If you hear the motor change RPM then don't do that. Minor changes, I think would be expected. But your ear should tell you if the motor is stressed.
@@HerminiePA was thinking the same thing. What I used was basically a downspout (2x3) and a couple 90* fittings to use with mine. It does not really change the volume of air going out much due to a very small difference in restriction.
It's not just the plain designated RPM design of the bearings.. it's the fact that by over revving the engine - the more oil in the mix is expelled from the bearings, which in nominal RPM the bearings get just enough oil from the 2T fuel\oil mix for lubrication while working. That's why I'm always trying to stress the importance of *always* keeping 2T engines under load. Even if your chain on a chainsaw gets dull - you'll over rev the engine and cause the same problem: the bearings *and* the top end of the engine overheat and the wear will turn into damage very quickly. *Thanks for this important video!* *Love your channel*
My Craftsman leaf blower came with an extension tube that has a slightly smaller opening. However, after seeing this video, I stopped using that extension tube. You have changed the way I run my leaf blower. Thank you!
Hi guys, looking through the comments but can't see it answered, my Stihl bg86 has a narrow nozzle that comes with it, do you think using this rather than the circular nozzle is worse for the engine? Or do you think Stihl will have made sure their narrower one doesn't strain it too much. Thanks in advance.
Interesting. The same thing happens with any vacuum cleaner -- whenever something blocks the suction nozzle, you can hear the motor screaming as it goes faster. As I understand it, this actually happens because the motor (or blower engine) is doing _less_ work. It's not moving as much air, so there's less drag on the impeller, so the motor is free to spin faster.
May I suggest that the only correct explanation is that the compressor stalls? In other words, acts line a car that loses traction: speed goes down while rpm goes up?
@@ohmbug10 Cavitation is something different. i.e. a boat propeller running faster out of the water vs slower in the water is not cavitation despite cavitation being something that occurs to boat propellers.
Thats 100% correct. But you also have a problem with that. The motor wasn't designed to operate at that higher RPM for long, so what you are doing, is putting added wearing on the bearings, the stator, the rotor, and the brushes. Eventually something is gonna give, and they do, the motors die, and then your looking for a new vacuum cleaner.
Your videos are amazingly educational but your enthusiasm is what really makes them great not to mention your always changing beverages of choice. I have a Busy 580 which blows at 214 mph. It really moves material ...leaves, grass, snow if it is not wet and even twigs and small branches....it is possible to cut back on the amount of air and actually make piles of leaves or you can just blast them all the way off the property then grab a beverage
Great info Steve. Thanks to your video last year on the air pressure created by different blowers went out and bought a Stihl 800c magnum. Got my yard done in 1/3 the time with much less effort. Got to the beer break much sooner. Your the best.
Is your earlier vid on adjusting a blower carb the same way for a blower with no throttle just a switch for fast or slow (It's an older blower)? By the way, love the vids keep them coming, so helpful. You have saved me hundreds and I can now help other people who need it. I recommend your channel to LOTS of people. Thanks
Awesome knowledge! Still scratching my head trying to get the leaf blower to even start at my work. Has spark, carb rebuilt, tubes are clear and primes, fresh fuel. Still scratching my head.
How do we know what the proper maximum rpm is for our blower? Sometimes I worry about keeping mine wide open for much of the time while blowing the yard.
What about the other way? Case in point, my stihl blower has a factory tapered fitting, however, I'd like to remove the tapered fitting and tubing to the length of my arm to have a short stubby blower for cleaning some of the hallways & metal framing I'm responsible for at work. Any adverse effect on the engines' internals by removing restriction?
What's the downside of doing the opposite of restriction? With my two tube Husq. 150BT backpack, sometimes I slip the end nozzle off when I am in a tight spot. For example, when I am blowing off my front steps and my back is up against the front door, both tubes are too long to be effective whereas the shorter length of just one tube allows me to blow downwards & clear debris at my feet. The engine doesn't sound like it is revving higher then but I've never put a tach on it.
I've owned my home for 20 years... during that time I've owned 2 line trimmers, 2 edgers, and at least 10 blowers, maybe 15. All the blowers develop the same problem - they won't start and I'm unable to figure out why (not spark plug, not spark arrester screen). Obviously same person using same fuel and oil mix in all 3 engines and I'm not having that problem with the line trimmer nor edger. But leaf blowers last me 1 to 2 years typically and then I can't fix them. Would love to see a video on this if you have any insights because I'm completely stumped.
@@WJHandyDad my Husqvarna is at least 6 years old, I do buy the premix fuel that is expensive, but my blower, weed eater, chainsaws, last forever. My string trimmer is my second one in twenty years, chainsaw is over 20 years old, cut down a lot of big trees with it, changed the bar twice and the chain about 5 times, fuel filter and spark plug once.
I'm not sure what the purpose of revving up the speed is for other than maybe to blow off your debris quicker, but this was an excellent video to watch. It's something I never thought of doing. Suffice to say there's a reason for not jimmy rigging things!
These where made to be reved up. You end up doing more harm to them by not running them full throttle. Even when you need to run them low like sometimes you need to just run it full out before you shut it off.
"I hope I helped some of you guys out with some of this" ....... Steve, you sell yourself far too short. It's pure gold. In addition to obviously being a MASTER TRADESMAN you are a "PROFESSER of mechanical instruction" as well. Thank you again! Pure gold! While I'm here how does that digital tachometer work anyway?
Hi Steve and thank you the amount of times that you tell people not to do this or that. They ask me to repair their gear and tell them its broken a crankshaft or piston and head is gone and they ask why I through my hands in the air and walk away now after you told them before it brakes not to do that..
Man Steve,keep the videos coming because they are a so simple to understand that if one doesn’t who has even basic engine knowledge then they are just dumb. I’ve watched many others on TH-cam and hands down your the best because your right to the point.
Not quite the same, but I've worked in the Wisconsin dairy industry for about thirteen years in two cheese plants, and both switched from high volume washdown hoses, to high pressure wash down hoses. They may save water, but they don't work as well.
I was looking into whether I could increase the air speed by restriction or something else. I'm glad I came here to see. Since I Stihl want to keep my machine in good order I decided to leave it alone. Thank you 👍
It's simple fluid dynamics for those who think they're smarter than the engineers. Think of a pressure washer, a beast flows over 4 gpm's. Now picture that same 4 gpm flowing through a tube 5" in diameter, it would be just spilling out. CFM in a blower is the same, a narrower opening will give you higher wind speed but less volume (CFM) at the same rpm's. You'd have to increase RPM's to get the original CFM's. Great simple video and explanation. Thanks for taking the time.
I have used my shop vac hose to extend the lenght so I can blow leafs out of the gutters from the ground. Glad I didn't use the end attachment for the hose to increase the flow. My shop vac hose is the same diameter as the tube. Thanks for the heads up
Lol Steve I actually recorded this very vid and explained in detail to staff members wear I work. Well Friday I was asked " what would cause a new blower to stop suddenly"? Well the extension hose you added and lack of oil in the fuel. Boom! I have been repairing small engines for years. When I'm stuck, I look hear. Thanks Steve!
Thanks Steve great info! I never would have done that to my leaf blower, but I 'm glad to know what not to do! My dad was a small engine mechanic for 30 yrs, (still is but in his own garage) and always has great stories of the broken and mishandled equipment that would come into the shop. I will have to share this one with him :)
what about trimmers? i recently replaced my trimmer head with the swivel head that takes precut lines and feels alot lighter and noticed the trimmer runs a little faster
Hi Steve, I have a Hitachi handheld gas blower - love that model (hate they quit making it). It comes with a straight tube but also a factory cone that fits at the end of the tube. The cone has only a slight slope reduction. Do you think since this is provided by the manufacturer with the blower, the cone is acceptable with this specific blower? Thanks for all the great videos.
Thanks Steve for this, and all your informative videos. I was about to use a longer tube (for rain gutters) that necked down, but instinctively did not. Now, I'm glad!
So you think it is better to not have the the tool to do the job need then that .001% chance of blowing your engine by over rev it? you do realize you can control the speed of a gas blow engine?
Was thinking the same but , only thing I can think of if it came with it from the factory it’s designed in a way to help direct the air flow not speed it up
I have never restricted the airflow on my leaf blower but I change my throttle to a higher RPM I never thought of burning out of bearing so I appreciate the warning. I'm talking about changing the choke
Steve, you have to tell them why this happens. The back pressure inside the tube causes the fan to cavitate which unloads the fan and allows the engine to run faster. Basically the fan is not grabbing air anymore but slipping on the air . You rock Steve. Keep up the good work.
Air props don't cavitate, from what I've read. Cavitation is a liquid prop problem, the closest similar issue aircraft props get is when blade tips get near supersonic and turbulence occurs. Drum fans in leaf blowers however, being not nearly as efficient, will actually have less load if over restricted because the air stays inside and rotates with the fan rather than forcing out a too small hole as Steve demonstrated. To make good pressure AND velocity, the blower would need to be built with the tolerances of a car's turbo and run at similar rpm.
I fly airplanes including a commercial instrument multi-engine licensing. I have cavitated propellers. Jet engines can also cavitate. You can feel a cavitation if you have a high enough angle of attack and then you can feel the airplane bite air again. Full cavitation could be seen when an airplane is going straight up and then it starts to fall back down tail first. At that point the propeller is in full cavitation.
When you go straight up with an airplane and there's not enough power for the airplane to go up the propeller eventually unloads because it can't grab the air hence slippage or cavitation. Especially on constant speed props you notice different loads on the engine. You can force the blade angle to go above its ability to grab air and cavitate the prop.
interesting video I have been considering one of those gutter cleaning kits that attaches to a leaf blower based on your video I am guessing you would recommend not doing so for a gas blower. what about a electric blower would restricting the air flow do any harm ?
I run a gutter cleaning kit in my echo blowers all fall without any issues. I went with the echo kit recommended for my blower no problem. You should be able to tell if your running something that is too restrictive. Also as far as restrictive pipes go the revving is a symptom of the carb being adjusted for a less restrictive pipe you can always adjust your carb to run the way it’s supposed to with any attachment I guess the reason people don’t is they want it to rev out but in doing so you are really just letting the engine go outside it’s designed power band it is made to run at.
@@zack6892 thanks for the info Zack. I actual got some pvc pipe and 2 90 degree fittings that I attach to my shop vac. now I can blow or vacuum them from the ground. using vucuum works best you don't have all that crap raining down on you like with blowing them out..
Thanks for the video. I didn't know restricting the output was a thing. I never heard of anyone doing it. Now, if someone suggests it, I'll know better than to do it and why it's not a good idea.
my Craftsman blower, which I bought for $5 at the Goodwill, has a factory tube that tapers into a flat end with 3, quarter-sized holes in it. could the stock tube be killing the motor, or would it be engineered to handle the restriction?
Just wondering how cleaning gutters would affect the CFM due to a neck down tube? Was considering a PVC tube to reach from the ground. Mine is an Echo PB-2520
You might be able to fix this issue by making your mixed gas a little bit heavier on the oil but don't quote me on that. Although I don't see why you would restrict the airflow in the first place.
Steve, I purchased a hand held Stihl blower about 10 years ago.... great machine! I gave it to my daughter when she bought her home. I purchased another blower... same model. The new model doesn’t nearly have the blow force as the older machine. What’s the difference? Same model... brought it back to the dealer but they say there is no problem. What say you Steve?
Hey Steve, have you started up your equipment after storing them away using the boutique fuel?instead of the sta-bil.if so can you please do a video and let us all know your results.cheers mate and keep up the great work.
Never ever thought about this , my STIHL has always had the original blow tube on it , but I've worked on small engines and I know the stupid things people try too do . Good video Steve thanks ......
Good to hear from you again Steve, been a while. Nice vid, could have used a bit more of the WHY this causes the rpm's to increase though. But certainly very good FYI. Beer is good but Bourbon is better :-) Be Good, Be Safe Your friend from PA
The reason the motor picks up speed is because air is a fluid. Believe it or not. Air causes resistance on the fan blades and makes the motor run at a slower speed as its “under load”. If you remove the load to the motor, it can spin a lot faster. Roasting the motor. Try with your vacuum at home, take the hose off and cover the end. The vacuum motor will pick up speed as the load is removed. The load being air.
Steve I would like a video on the easiest ,fastest ,safest and most practical way of getting under my lawn rider to change blades etc. you have the best small engine channel on u tube.
Stihl makes a factory accessory for blowing your gutters out, an extension with a U-shaped end that you can articulate directing airflow overhead well out of your reach . I get the physics behind the overrevving but don't recall any warnings with the accessory. Is 9000 rpm really that hard on a small bore 2-stroke? Or is the fuel/oil mix that's standard too lean?
If that's how they were intended to be used they would have made them that way from the factory anytime you alter things like that you're just asking for trouble
My Stihl blower came with two tubes. One has a oval shape to it and it does speed up the engine somewhat because the outlet is smaller than the round one. Since it came like that new it should be fine, but I noticed the rpm difference when I use the smaller outlet tube. I never use the oval small outlet tube because even though it revs higher, the airflow is not as useful for clearing leaves and grass clippings for me. I can see where this issue would be real bad if the carb was set a little lean to start with and someone restricted the outlet tube. It will rev itself to pieces.
Hi Bob, iam not saying it's better idea. Iam just saying if you have ever used a blow gun some have holes in the side of the tube so theres a release for the air in case of blockage but it does increase the amount of air. If you have a older machine it might be a to get back the performance of new. And by the way it dosent increase the rpms because you are not restricting the tube .
@@stellarproductions8888 guess you have never tried something new to see if it makes it better. Not saying to use a new machine but maybe something older that has lost some of its zip. Ya never know?
Thanks for this.....My Stihl blower has a short tube and I wasn't fixing to add any type of extension to my anyway....I'm glad that I saw your video....Well explained
✅Click here for a similar Tachometer ➜ amzn.to/3FSsGqb
For more videos like this, check out:
👉How to Adjust or Tune the Carburetor on a Leaf Blower ➜ th-cam.com/video/DWPUYJiF6KM/w-d-xo.html
👉CORRECT WAY To Tune The Carburetor On A Chainsaw ➜ th-cam.com/video/M6T5JoGXcHY/w-d-xo.html
👉How To Adjust Or Tune The Carburetor On A Weedeater ➜ th-cam.com/video/gmhxTvGRtCg/w-d-xo.html
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@fred kramer 1
I always wondered why it wasnt restricted to make more pressure and now I know. Thank you for the insight.
Just curious my husqvarna blower comes with a molded hose to get better air speed and a straight hose which is better to run or is my blower tuned for both
Steve don’t forget Modelo 🍺
So if i put two 90s on the end for gutters....
Steve, several years ago I did an adult education small engine mechanic course in an effort to learn some new skills. Believe it or not, I have learnt more from watching your videos than I ever did in that course! You make an excellent teacher and know how to pass on your knowledge and experience really well. Thanks for the continued education and keep the quality content coming, I love it!!
Thank You...and You're Welcome...
I’m 17 and started working with a landscaping company around a month ago I have learned a lot from you videos and plan on continuing to learn from you! Keep it up bro 👌🏾😊
Best of luck!
Great job! You are head and shoulders above your peers if you’re holding down a job! And learning on the side too, you will go far!
When I have a problem with my yard machines, your the first one I come to watch. Now at 71, I know some things, but your always teaching old dogs new tricks. I knew this one a long time ago but forgot about it. Thanks for the reminder. Where's the beer?
This guy is great . Loaded with common sense info from a normal guy who has a beer while fixing temperamental gas garage items . Tons of good tips like warming up your 2 strokes so you don't score the piston and tells you why and how the piston scores . If your a guy who always fixes your own stuff like me , this is a must subscribe ! Great job Steve
WOW! Thank you so much Andy...
i realize that this video is 3 years old, but the info is ageless and this is a fnatastic channel. thanks Steve ✊
I appreciate that!
Thanks, Steve. I retired after 43 years of being a Combat Medic in the US Army and a Civilian Paramedic. I could diagnose and fix the human body in a ditch and in any type of light or weather, BUT!!! I was scared to death to try and fix my small engine machines. You could say I was a mechanic to the human body, but I couldn't figure out an SAE tool kit. Thanks to you,Chickanic, and a couple more excellent mechanics. I now have every piece of equipment up and running. I continue to learn from you guys. Thank you soooo much for giving me the courage to tear em down and fix em. THANK YOU!!!!+
Just think of all the new blowers you could sell. That's honesty and integrity you have Steve. God Bless you.
Thank You...
Wow Steve, I knew doing that isn't good on blowers, but as soon as you switched them tubes you can hear an instant change in rpms. I would have never thought they would increase that much. Thank you so much for risking your blower to show us. Love your content. I've learned a ton from you. WE ALL APPRECIATE YOU MORE THAN YOU COULD EVER KNOW!!!
Thank You...
That rpm increase is amazing. I would never believe it could increase that much, until I watched this video. Thank you for producing such good content.
You're Welcome...
I have been watching your videos for awhile now . your a smart man . if I have problems your videos are a tool in the tool box i will us . Thank for all the help keep up the good work.
Wow, thank you
I had a leaf blower (Homelite) that literally almost BLEW UP and I didn't know why, but when I saw this video, it changed everything in my head. That blower had the flat-end tube. Turns out that piece of garbage wasn't able to handle the RPM cuz it was so cheap. Then I got my STIHL and I kept the default tube on. Lesson learned, thanks! 👍😁
Your videos already helped me fix my stubborn Ryobi leaf blower. I already had a DD carburetor adjustment tool after buying a multi-pack for my Homelite String trimmer. Now, this video stopped me from getting greedy with the air flow. Thanks much.
Glad I could help
Hi Steve, can I just say you have helped me no end in doing those little jobs in the service of my garden equipment. I just wanted to say that I have a stihl leaf blower and it came with a stihl restricted end to the main tube and I find that as you say it produces more blowing power and as a result I dont have to rev the engine as much so there's no need to over rev the motor at all. Less stress for the motor and not as much fuel used Just a thought.
Steve, your education is infinite and passionate, and I appreciate you sharing your wisdom. All the best, to my northern brother!!
Much appreciated
Good point Steve. The last 2 Stihl BG86 C+E hand held blowers that I've purchased actually came with a restricted flow "flat" tube and the regular "round" one. I have never used the flat one but it is supposed to raise the exit speed from 154 to 190 MPH (at lower volume of course). I'm sure they designed the flat tube to still be within RPM maximum spec. I just never had a use for it. Supposedly good for cleaning driveways and peeling up wet leaves ETC. Great channel, glad I found it!
My Stihl came with two nozzles.
The flat one has higher velocity with less volume, it's for flat surfaces like your drive way.
The round, low velocity, high volume one is for your lawn.
I find myself using the round one the most.
Being a noobie to the lawn care business, I truly appreciate all the nuggets I take away from your videos.
I appreciate that
Super informative. Thanks for sharing!
Our pleasure!
I totally put on an 8ft pvc extension with a 90 on the end when i clean my gutters from the ground
Stihl sell a gutter cleaning kit for their newer blowers so can't be that bad I guess, idk how long the pipe is though.
Oh but using a pressure washer to clean gutters is SO much more fun! 🤠
Perfect timing. I was just explaining to a guy at work on Friday why his blower was f-ing up with a tapered end on the tube. Good video! Just gained my sub
Thank You...
The gutter-cleaner extensions must affect the engine as well, then? The longer you make the tube, the more resistance - much like taping off the tube a bit.
I would never be dumb enough to do something like that, but it did give me a lot to think about with motors and other aspects of small engines. Great content!
Right on
I've never seen or thought about doing this nonsense. I've had the same electric blower for 10+ years and even use the mulch feature every year and the thing runs like a champ. LOVE THIS CHANNEL!!!
Right on
I just ran across this channel. I will be watching it now.It’s great information!
Awesome! Thank you!
I found a Husqvarna 125BV in the dumpster that really wasn't in bad shape. I took it apart, cleaned the dirt off of it and replaced the spark plug and it runs great. The 3 piece blower tube had a crimped tip that looked like it was made by Husqvarna. I took it off and the tube still seems long enough. I decided to keep the crimped tip and use it without. I haven't tried it yet but I'm betting it will work fine. Thanks for the tip.
Echo sells an attachment that is a 10 foot length of tube with an elbow designed to clean gutters on a ranch without the use of a ladder. What is the effect of these type of attachments on the RPMs and engine load?
was wondering the same thing
Sthil make the same kit ?
Since no one replied, let me try. Go by your ear. If you hear the motor change RPM then don't do that. Minor changes, I think would be expected. But your ear should tell you if the motor is stressed.
@@HerminiePA was thinking the same thing. What I used was basically a downspout (2x3) and a couple 90* fittings to use with mine. It does not really change the volume of air going out much due to a very small difference in restriction.
I am going to look for the winterize lawn mower video. Thanks for the video very informative.
Thanks you for the advice on the blower, I had pinch my stil with a zip tie in the middle,,I will remove it. As always very good information
Glad to help
And I always figured that the engine would run slower because it would be under a heavier load when restricted. Thanks for enlightening me Steve.
Old man knowledge. Priceless! You're my hero!
Thank You...
It's not just the plain designated RPM design of the bearings.. it's the fact that by over revving the engine - the more oil in the mix is expelled from the bearings, which in nominal RPM the bearings get just enough oil from the 2T fuel\oil mix for lubrication while working. That's why I'm always trying to stress the importance of *always* keeping 2T engines under load. Even if your chain on a chainsaw gets dull - you'll over rev the engine and cause the same problem: the bearings *and* the top end of the engine overheat and the wear will turn into damage very quickly.
*Thanks for this important video!*
*Love your channel*
I didnt know that! I appreciate you taking the time to teach us Neanderthals not to abuse our equipment. Thank you for caring and sharing ❤.
You're Welcome...
"Neanderthals"? Well yeah, I guess you are right about that. Ha ha.
@Slim Tinskin "We demand a shrubbery!"
@Slim Tinskin Is that the flag outside of the Pepsi factory?
My Craftsman leaf blower came with an extension tube that has a slightly smaller opening. However, after seeing this video, I stopped using that extension tube. You have changed the way I run my leaf blower. Thank you!
You're Welcome...
Hi guys, looking through the comments but can't see it answered, my Stihl bg86 has a narrow nozzle that comes with it, do you think using this rather than the circular nozzle is worse for the engine? Or do you think Stihl will have made sure their narrower one doesn't strain it too much. Thanks in advance.
Interesting. The same thing happens with any vacuum cleaner -- whenever something blocks the suction nozzle, you can hear the motor screaming as it goes faster. As I understand it, this actually happens because the motor (or blower engine) is doing _less_ work. It's not moving as much air, so there's less drag on the impeller, so the motor is free to spin faster.
Right on
Yep. The technical word is cavitation.
May I suggest that the only correct explanation is that the compressor stalls? In other words, acts line a car that loses traction: speed goes down while rpm goes up?
@@ohmbug10 Cavitation is something different. i.e. a boat propeller running faster out of the water vs slower in the water is not cavitation despite cavitation being something that occurs to boat propellers.
Thats 100% correct. But you also have a problem with that. The motor wasn't designed to operate at that higher RPM for long, so what you are doing, is putting added wearing on the bearings, the stator, the rotor, and the brushes. Eventually something is gonna give, and they do, the motors die, and then your looking for a new vacuum cleaner.
Your videos are amazingly educational but your enthusiasm is what really makes them great not to mention your always changing beverages of choice. I have a Busy 580 which blows at 214 mph. It really moves material ...leaves, grass, snow if it is not wet and even twigs and small branches....it is possible to cut back on the amount of air and actually make piles of leaves or you can just blast them all the way off the property then grab a beverage
Great info Steve. Thanks to your video last year on the air pressure created by different blowers went out and bought a Stihl 800c magnum. Got my yard done in 1/3 the time with much less effort. Got to the beer break much sooner. Your the best.
That is awesome!
Is your earlier vid on adjusting a blower carb the same way for a blower with no throttle just a switch for fast or slow (It's an older blower)? By the way, love the vids keep them coming, so helpful. You have saved me hundreds and I can now help other people who need it. I recommend your channel to LOTS of people. Thanks
I have to agree with you steve..... Like the old saying goes. "If the manufacturer wanted it that way they would have built it that way".
Right on
Awesome knowledge! Still scratching my head trying to get the leaf blower to even start at my work. Has spark, carb rebuilt, tubes are clear and primes, fresh fuel. Still scratching my head.
Thank you Steve, I’ve often thought of doing that, but was afraid of the results. You saved me! Thank you again!
Any time!
How do we know what the proper maximum rpm is for our blower? Sometimes I worry about keeping mine wide open for much of the time while blowing the yard.
What about the other way? Case in point, my stihl blower has a factory tapered fitting, however, I'd like to remove the tapered fitting and tubing to the length of my arm to have a short stubby blower for cleaning some of the hallways & metal framing I'm responsible for at work. Any adverse effect on the engines' internals by removing restriction?
What's the downside of doing the opposite of restriction? With my two tube Husq. 150BT backpack, sometimes I slip the end nozzle off when I am in a tight spot. For example, when I am blowing off my front steps and my back is up against the front door, both tubes are too long to be effective whereas the shorter length of just one tube allows me to blow downwards & clear debris at my feet. The engine doesn't sound like it is revving higher then but I've never put a tach on it.
I've owned my home for 20 years... during that time I've owned 2 line trimmers, 2 edgers, and at least 10 blowers, maybe 15. All the blowers develop the same problem - they won't start and I'm unable to figure out why (not spark plug, not spark arrester screen). Obviously same person using same fuel and oil mix in all 3 engines and I'm not having that problem with the line trimmer nor edger. But leaf blowers last me 1 to 2 years typically and then I can't fix them. Would love to see a video on this if you have any insights because I'm completely stumped.
Hi there , are you using Stihl blowers ?
I've never had a Stihl but if they'll last longer than Craftsman, John Deere, Homelite, and all the other brands I've tried, I'm willing to buy one
@@WJHandyDad my Husqvarna is at least 6 years old, I do buy the premix fuel that is expensive, but my blower, weed eater, chainsaws, last forever. My string trimmer is my second one in twenty years, chainsaw is over 20 years old, cut down a lot of big trees with it, changed the bar twice and the chain about 5 times, fuel filter and spark plug once.
my sthil bg50 is going on three years and works great
guess I'll buy a Stihl and see what happens because it is so frustrating when they decide to not run and I'm in the middle of mowing
Wow. You are making good sense. I never ran a rpm detector. but when you did. that was proof to me. Not enough lubrication.
I'm not sure what the purpose of revving up the speed is for other than maybe to blow off your debris quicker, but this was an excellent video to watch. It's something I never thought of doing. Suffice to say there's a reason for not jimmy rigging things!
These where made to be reved up. You end up doing more harm to them by not running them full throttle. Even when you need to run them low like sometimes you need to just run it full out before you shut it off.
"I hope I helped some of you guys out with some of this" ....... Steve, you sell yourself far too short. It's pure gold. In addition to obviously being a MASTER TRADESMAN you are a "PROFESSER of mechanical instruction" as well. Thank you again! Pure gold! While I'm here how does that digital tachometer work anyway?
Inductance. Just like a timing light
340k subs. Man, how long it took you to get to 10k, then 100k and now look how quickly it's jumped. Great content!
Thanks Scotty!
lol I have been on youtube like 15 years and still dont have 1k subs, youtube sucks
Hi Steve and thank you the amount of times that you tell people not to do this or that. They ask me to repair their gear and tell them its broken a crankshaft or piston and head is gone and they ask why I through my hands in the air and walk away now after you told them before it brakes not to do that..
The same over-rev problem can happen if you allow debris to clog the fan air intake. Always check to make sure the intake is unrestricted.
Great point!
Exactly
Man Steve,keep the videos coming because they are a so simple to understand that if one doesn’t who has even basic engine knowledge then they are just dumb. I’ve watched many others on TH-cam and hands down your the best because your right to the point.
Thank You...
Not quite the same, but I've worked in the Wisconsin dairy industry for about thirteen years in two cheese plants, and both switched from high volume washdown hoses, to high pressure wash down hoses. They may save water, but they don't work as well.
Good advice, same overreving problem can happen on any non govenor engines
Same thing happens if air flow to intake is restricted. Noticed that many times when shirttail gets sucked against intake grill.
Good point!
My shirt tail got sucked into one of my blowers last year!
I was looking into whether I could increase the air speed by restriction or something else. I'm glad I came here to see. Since I Stihl want to keep my machine in good order I decided to leave it alone. Thank you 👍
Glad I could help!
Steve, good information. Some people are going to go ahead and do this anyway! They are the ones who will get a blown engine.
Right on
It's simple fluid dynamics for those who think they're smarter than the engineers. Think of a pressure washer, a beast flows over 4 gpm's. Now picture that same 4 gpm flowing through a tube 5" in diameter, it would be just spilling out. CFM in a blower is the same, a narrower opening will give you higher wind speed but less volume (CFM) at the same rpm's. You'd have to increase RPM's to get the original CFM's. Great simple video and explanation. Thanks for taking the time.
Right on
Steve those were great words of wisdom there. Cheers!!!
Thank You...
I have used my shop vac hose to extend the lenght so I can blow leafs out of the gutters from the ground. Glad I didn't use the end attachment for the hose to increase the flow. My shop vac hose is the same diameter as the tube. Thanks for the heads up
Good stuff!
Steve, you always do a good job explaining but this was special. Thank you, I'll never do it.
Right on
Lol Steve I actually recorded this very vid and explained in detail to staff members wear I work. Well Friday I was asked " what would cause a new blower to stop suddenly"?
Well the extension hose you added and lack of oil in the fuel. Boom!
I have been repairing small engines for years. When I'm stuck, I look hear. Thanks Steve!
Right on Todd! You're Welcome...
Thanks Steve great info! I never would have done that to my leaf blower, but I 'm glad to know what not to do! My dad was a small engine mechanic for 30 yrs, (still is but in his own garage) and always has great stories of the broken and mishandled equipment that would come into the shop. I will have to share this one with him :)
Right on
I no longer have a yard, but I really enjoy his tips and tricks. Share with many.
Awesome, thank you!
what about trimmers? i recently replaced my trimmer head with the swivel head that takes precut lines and feels alot lighter and noticed the trimmer runs a little faster
Hi Steve, I have a Hitachi handheld gas blower - love that model (hate they quit making it).
It comes with a straight tube but also a factory cone that fits at the end of the tube.
The cone has only a slight slope reduction.
Do you think since this is provided by the manufacturer with the blower, the cone is acceptable with this specific blower?
Thanks for all the great videos.
Haven't watched in a while but like always a fountain of information.
Right on
You’re the man Steve! I’m gonna start flipping some small engines and I’m sure this channel is going to come in clutch
You can do it!
Is the rpm dependent on the displacement of the engine? I have a Ryobi ry09446 blower and can't seem to find what the max RPM should be. Thanks
Thanks Steve for this, and all your informative videos. I was about to use a longer tube (for rain gutters) that necked down, but instinctively did not. Now, I'm glad!
So you think it is better to not have the the tool to do the job need then that .001% chance of blowing your engine by over rev it? you do realize you can control the speed of a gas blow engine?
What do you think about Dewalt 20v leaf blowers Mr. Steve. Thanks for sharing your videos. Great stuff. No beer 🍺
strange, my redmax came with 2 different nozzles one is considerable amount of difference, been using both for years
Was thinking the same but , only thing I can think of if it came with it from the factory it’s designed in a way to help direct the air flow not speed it up
If the blower came with it, is designed for it!
Good video!
Glad my question was already answered! Thanks Mrnobody023 and Steve!
wow I have been looking for a leaf blower and had no idea that modifying the tube would be so bad thanks Steve .
You're Welcome...
All of my stihl blowers come with a tube that is smaller at the end. Squashed looking. Shall I still be using it?
Mine too.... Factory made.
Them are ok to use..Comes with the blower.
Same size hole, just a different shape. If the blower came with it, it is designed for it!
@@StevesSmallEngineSaloon awesome! Thanks! I can relax now. 😬😬😬
I have never restricted the airflow on my leaf blower but I change my throttle to a higher RPM I never thought of burning out of bearing so I appreciate the warning. I'm talking about changing the choke
Steve, you have to tell them why this happens. The back pressure inside the tube causes the fan to cavitate which unloads the fan and allows the engine to run faster. Basically the fan is not grabbing air anymore but slipping on the air . You rock Steve. Keep up the good work.
Right on
I was wondering what the scientific reason was and that explains everything thanks dude!
Air props don't cavitate, from what I've read. Cavitation is a liquid prop problem, the closest similar issue aircraft props get is when blade tips get near supersonic and turbulence occurs. Drum fans in leaf blowers however, being not nearly as efficient, will actually have less load if over restricted because the air stays inside and rotates with the fan rather than forcing out a too small hole as Steve demonstrated. To make good pressure AND velocity, the blower would need to be built with the tolerances of a car's turbo and run at similar rpm.
I fly airplanes including a commercial instrument multi-engine licensing. I have cavitated propellers. Jet engines can also cavitate. You can feel a cavitation if you have a high enough angle of attack and then you can feel the airplane bite air again. Full cavitation could be seen when an airplane is going straight up and then it starts to fall back down tail first. At that point the propeller is in full cavitation.
When you go straight up with an airplane and there's not enough power for the airplane to go up the propeller eventually unloads because it can't grab the air hence slippage or cavitation. Especially on constant speed props you notice different loads on the engine. You can force the blade angle to go above its ability to grab air and cavitate the prop.
Thanks Steve for even more information we didn't know! Never done it before but now I know to never do it in the future.
Happy to help!
interesting video I have been considering one of those gutter cleaning kits that attaches to a leaf blower based on your video I am guessing you would recommend not doing so for a gas blower. what about a electric blower would restricting the air flow do any harm ?
I run a gutter cleaning kit in my echo blowers all fall without any issues. I went with the echo kit recommended for my blower no problem. You should be able to tell if your running something that is too restrictive. Also as far as restrictive pipes go the revving is a symptom of the carb being adjusted for a less restrictive pipe you can always adjust your carb to run the way it’s supposed to with any attachment I guess the reason people don’t is they want it to rev out but in doing so you are really just letting the engine go outside it’s designed power band it is made to run at.
@@zack6892 thanks for the info Zack. I actual got some pvc pipe and 2 90 degree fittings that I attach to my shop vac. now I can blow or vacuum them from the ground. using vucuum works best you don't have all that crap raining down on you like with blowing them out..
Great video!!! Love the website, young man looking to start up a lawn care business gathering all the tips and tricks, much appreciated
Awesome thank you!
Thanks again Steve, great video! You always crack me up, I love your passion for small engine repair and maintenance!
Glad you enjoyed it
Thanks for the video. I didn't know restricting the output was a thing. I never heard of anyone doing it.
Now, if someone suggests it, I'll know better than to do it and why it's not a good idea.
Right on
never thought - yeah i was going to rig mine to stricture the airflow - thanks Steve --- Sleeman's Original Draft
Right on
my Craftsman blower, which I bought for $5 at the Goodwill, has a factory tube that tapers into a flat end with 3, quarter-sized holes in it. could the stock tube be killing the motor, or would it be engineered to handle the restriction?
Its probably the same size opening but just a different shape, no actual restriction. If your blower came with it, it is designed for it!
Ho-ly- crap. Steve I’ve had one of those tip add on that restrict the air, and had NO IDEA that this could happen. Taking it of ASAP
Right on
Landon Brown the tip restriction developers usually know what they’re doing. The home made ones are the ones that make things go boom.
Just wondering how cleaning gutters would affect the CFM due to a neck down tube? Was considering a PVC tube to reach from the ground. Mine is an Echo PB-2520
You might be able to fix this issue by making your mixed gas a little bit heavier on the oil but don't quote me on that. Although I don't see why you would restrict the airflow in the first place.
Steve, I purchased a hand held Stihl blower about 10 years ago.... great machine! I gave it to my daughter when she bought her home. I purchased another blower... same model. The new model doesn’t nearly have the blow force as the older machine. What’s the difference? Same model... brought it back to the dealer but they say there is no problem. What say you Steve?
I agree with your statement. I’ll leave the tube on my blower alone.
Right on
Unless you get a Hitachi, the stock top tube is tapered.
@@willlance6182 I’ll never make modifications to my tube.
How do I adjust the carb on my back pack huskav leaf blower? Won't rev up.
I have a couple videos in my playlists for that...
Hey Steve, have you started up your equipment after storing them away using the boutique fuel?instead of the sta-bil.if so can you please do a video and let us all know your results.cheers mate and keep up the great work.
I use “ sea foam “ on all my small engines for the last 10 years - I heard that “ sta bil “ is good for a while- but later ruins the gas
Never ever thought about this , my STIHL has always had the original blow tube on it , but I've worked on small engines and I know the stupid things people try too do . Good video Steve thanks ......
Glad to help
Good to hear from you again Steve, been a while. Nice vid, could have used a bit more of the WHY this causes the rpm's to increase though. But certainly very good FYI.
Beer is good but Bourbon is better :-)
Be Good, Be Safe
Your friend from PA
The reason the motor picks up speed is because air is a fluid. Believe it or not. Air causes resistance on the fan blades and makes the motor run at a slower speed as its “under load”. If you remove the load to the motor, it can spin a lot faster. Roasting the motor. Try with your vacuum at home, take the hose off and cover the end. The vacuum motor will pick up speed as the load is removed. The load being air.
I agree. No need to modify. As simple as that. Thanks Steve.................
Right on
More great info ! Thanks Steve
Any time!
Great advice I am going to take great care of my blower that I bought yesterday John Casey
Good luck!
Will opening up the exhaust port have the same detrimental effect to the bearings?
Always Interesting videos Steve.
Steve I would like a video on the easiest ,fastest ,safest and most practical way of getting under my lawn rider to change blades etc. you have the best small engine channel on u tube.
I’m so glad I watched your show
Thank You...
Stihl makes a factory accessory for blowing your gutters out, an extension with a U-shaped end that you can articulate directing airflow overhead well out of your reach . I get the physics behind the overrevving but don't recall any warnings with the accessory. Is 9000 rpm really that hard on a small bore 2-stroke? Or is the fuel/oil mix that's standard too lean?
Great video Steve! I had to buy a hat! I went with the “trucker” style. 😁
Keep me coming!
Right on!
some of these blowers have adaptors for the ends of the tube selling in the catalouge are they ok to use or do they cause damage too?
If it came with it, it is designed for it...
If that's how they were intended to be used they would have made them that way from the factory anytime you alter things like that you're just asking for trouble
Right on Bobby!
Exactly! And its also a good warranty void, company be like, sorry, the warranty doesn't cover customer negligence, we aint replacing it lol.
My Stihl blower came with two tubes. One has a oval shape to it and it does speed up the engine somewhat because the outlet is smaller than the round one. Since it came like that new it should be fine, but I noticed the rpm difference when I use the smaller outlet tube. I never use the oval small outlet tube because even though it revs higher, the airflow is not as useful for clearing leaves and grass clippings for me. I can see where this issue would be real bad if the carb was set a little lean to start with and someone restricted the outlet tube. It will rev itself to pieces.
Hi Bob, iam not saying it's better idea. Iam just saying if you have ever used a blow gun some have holes in the side of the tube so theres a release for the air in case of blockage but it does increase the amount of air. If you have a older machine it might be a to get back the performance of new. And by the way it dosent increase the rpms because you are not restricting the tube .
@@stellarproductions8888 guess you have never tried something new to see if it makes it better. Not saying to use a new machine but maybe something older that has lost some of its zip. Ya never know?
Thanks for this.....My Stihl blower has a short tube and I wasn't fixing to add any type of extension to my anyway....I'm glad that I saw your video....Well explained
You're Welcome...and Thank You...
@@StevesSmallEngineSaloon You're welcome...