This video will show you how I diagnosed and repaired my Black & Decker LeafHog leaf blower/vac. My leaf blower is specifically a Black and Decker BV4000 Type 2 LeavHog.
Thank you so much for a very professionally made video. In my blower, connectors after the fuse got burned. I removed the connectors and just soldered the wires together. I was trying to test the blower without putting the base on and it won’t work. When I got to end on video and saw you putting base on, realized the safety mechanism build in base with 2 tabs 😊. Put the base on and it worked perfectly. Thank you .
Very professional video, and a proper repair, unlike another, who butchered up the safety interlock and deleted the fuse. Its a 15 amp 125 volt 3AG fuse, this motor is rated 12.0 amps. It prevents a melt down and fire if the motor shorts out, and it also lets you know when the sleeve bearings go dry and the motor starts using too many amps. Get bottle of Turbine oil online or at any HVAC parts place, it is for low viscosity and high speed sleeve bearings. Another cause for high amperage is if the male/female white wire connector just above the fuse becomes loose, overheats and lowers the voltage to the motor. You can tell if it is bad as the heat starts to turn it brown or black. You can also clean off the commutators (copper bars) with some denatured alcohol or brake cleaner on a cotton cloth, to prolong motor life. I used to have an appliance repair shop.
Just like the very reliable 320 Black and Decker I've had for about 20 years. The male plug on mine is getting a little loose and the on/off switch unpredictable. So thanks to this guys very well made video MAYBE I can now try fix my own. Thanks for such an informative, well made video !
Thank you for sharing your experience. I love the video, I will watch a few more times to see if I can replicate the switch replacement if that is my solution. I am baffled because I disassembled my Toro Power Jet F700 Electric corded leaf blower; cleaned-up the commutator and reassembled the parts back together (correctly?) and it won't start. Other videos I have watched the leaf blowers have a safety switch, I could not find a safety switch. I was told that my leaf blower has a rheostat switch: I checked for power with my old analog multi-meter, current passes through the plug, so I ruled that the plug is good: I probe around with my positive lead while my negative lead is still in ground. I get a good reading on what I think is the commutator, but nothing when I probe one side of the armature copper windings, However, I am on a steep learning curve with AC/DC/Universal Electric Motors. My Father was a Master Electrician, so I retrieved his old book titled Electric Motor Repair by Robert Rosenberg: I am trying to understand what type of motor is in my leaf blower: I was leaning towards a Alternating Current Motor Control because I must plug it into the house electrical receptacle for it to power on. I thought DC motors are powered by a battery. I learned that the Universal Motor is applicable to both AC and DC? It has been a challenge to reassemble because the plastic housing has to matchup. The past six-(6) days has been frustrating because I searched both CZcams and the internet and also read the Electric Motor Repair book and I still cannot get the leaf blower to power on when plugged into electrical receptacle. I used color matching zip-ties, so I can reconnect the correct wires [only 2 pairs!!] I thought once I cleaned-up the commutator I thought my leaf blower was going to operate. czcams.com/play/PLGVI8bUyFEzrbwDhEi1VxWAwKVqnxRaSx.html&si=kBbVzJmlLariu7n6
Well, I went to the garage to get the leaf blower that stopped working but I remember I put it out in the trash! Gone! I’m sure it was just a fuse. I hope someone is using it!
Can you do more detail on how to align the switch? Mine works if I press the internal switch with it open not when assembled. Something wrong with alignment if the switch
a little stupid to cut the linesto replace fuse. you just need to take of the cap on both side metal holder to the fuse, and replace another with no wire version of the fuse. All the rest are great and clearly demonstrate.
I have the same model and it is ancient. Yours looks like you just brought it home from store. Have you actually used it? Mine was turning the commutator black and I had to keep polishing it, then it quit all together. It was pretty obvious, the wires around the fuse were all black and burned, the connector was toast. I found a 15a 250v microwave fuse at ace and it worked, then quit again. That's when I found your video, thought maybe the switch. Turns out its the leads on the brushes are too tight and stop them from hitting the commutator. I to rotated the zip ties to get some slack so they touch and now it works again. My brushes are almost to a 1/4 inch and have not been able to locate new ones.
I had the same problem. Then I found that the local Walmart had a 44 piece bit set (called "Hyper Tough") with skinny enough extender and star bits. It worked great so I was able to remove the cover of my B&D 320 blower/vac (same as in this video) very easily...and fix the problem. $7.99 for the really good quality bit set.
@HowToWith GEO Do you think the LeafHog would be damaged if I used it to vacuum maple leaves? They are the little seed pods that have a “wing” attached and they fly through the air like a helicopter.
Where did you find the fuse with the wires/pigtails attached? I can only find the ones without a wire extending from both ends. Don't see one in big box stores or on the web. Is there a special name for it? I need one like yours, but a 20A 125V glass (or ceramic) fuse for a B&D LH5000 240 mph blower vacuum.
I am wondering that too. In the video his isn't reaching the rocker switch either unless he pushes on it. The whole mechanism is floppy, doesn't seem to be anything to press the end onto the rocker switch. Maybe the metal piece that is there to put tension on the end pops out of place when taking apart the clam shell cover?
Same here. Looks like it won't engage unless the latch button is depressed. I came here because mine will only run at low speed, which is too weak to pick up any but the smallest leaves. My best friend used to work as a tech for B&D, which I completely forgot until just now. I texted him about my issue, and if he has time I'll ask him about the mechanism and report back here.
@@dougfoster445 How did you rig it? I "modified" mine using a drill bit and some hot glue. It's arguably better than the original design, but sadly my main issue is still unresolved. :/
Thank you so much for a very professionally made video. In my blower, connectors after the fuse got burned. I removed the connectors and just soldered the wires together. I was trying to test the blower without putting the base on and it won’t work. When I got to end on video and saw you putting base on, realized the safety mechanism build in base with 2 tabs 😊. Put the base on and it worked perfectly. Thank you .
Great video; will save my leaf blower and in a way, help save the environment!
Very professional video, and a proper repair, unlike another, who butchered up the safety interlock and deleted the fuse. Its a 15 amp 125 volt 3AG fuse, this motor is rated 12.0 amps. It prevents a melt down and fire if the motor shorts out, and it also lets you know when the sleeve bearings go dry and the motor starts using too many amps. Get bottle of Turbine oil online or at any HVAC parts place, it is for low viscosity and high speed sleeve bearings. Another cause for high amperage is if the male/female white wire connector just above the fuse becomes loose, overheats and lowers the voltage to the motor. You can tell if it is bad as the heat starts to turn it brown or black. You can also clean off the commutators (copper bars) with some denatured alcohol or brake cleaner on a cotton cloth, to prolong motor life. I used to have an appliance repair shop.
Just like the very reliable 320 Black and Decker I've had for about 20 years. The male plug on mine is getting a little loose and the on/off switch unpredictable. So thanks to this guys very well made video MAYBE I can now try fix my own. Thanks for such an informative, well made video !
Thanks for this! I did everything according to your tutorial, and now I have, once again, a working blower. WOOHOO!
Thank you for sharing your experience. I love the video, I will watch a few more times to see if I can replicate the switch replacement if that is my solution. I am baffled because I disassembled my Toro Power Jet F700 Electric corded leaf blower; cleaned-up the commutator and reassembled the parts back together (correctly?) and it won't start. Other videos I have watched the leaf blowers have a safety switch, I could not find a safety switch. I was told that my leaf blower has a rheostat switch: I checked for power with my old analog multi-meter, current passes through the plug, so I ruled that the plug is good: I probe around with my positive lead while my negative lead is still in ground. I get a good reading on what I think is the commutator, but nothing when I probe one side of the armature copper windings, However, I am on a steep learning curve with AC/DC/Universal Electric Motors. My Father was a Master Electrician, so I retrieved his old book titled Electric Motor Repair by Robert Rosenberg: I am trying to understand what type of motor is in my leaf blower: I was leaning towards a Alternating Current Motor Control because I must plug it into the house electrical receptacle for it to power on. I thought DC motors are powered by a battery. I learned that the Universal Motor is applicable to both AC and DC? It has been a challenge to reassemble because the plastic housing has to matchup. The past six-(6) days has been frustrating because I searched both CZcams and the internet and also read the Electric Motor Repair book and I still cannot get the leaf blower to power on when plugged into electrical receptacle. I used color matching zip-ties, so I can reconnect the correct wires [only 2 pairs!!] I thought once I cleaned-up the commutator I thought my leaf blower was going to operate. czcams.com/play/PLGVI8bUyFEzrbwDhEi1VxWAwKVqnxRaSx.html&si=kBbVzJmlLariu7n6
great video....my exact model just stopped and I will use your video as a guide to diagnose. Many thanks!
That soundof it running is music to my ears.
Well, I went to the garage to get the leaf blower that stopped working but I remember I put it out in the trash! Gone! I’m sure it was just a fuse. I hope someone is using it!
OMG I think we have the similar kind.. super old model right.
I wish I had a solder kit.. and tester haha
Very well explained, thanks!
got a broken one for free..... won't be broke for much longer........ thank you.
Good job man thank you
Can you do more detail on how to align the switch? Mine works if I press the internal switch with it open not when assembled. Something wrong with alignment if the switch
Thank you for this video! But when u changed the fuse how do you know what type of fuse it is and the specifications?
It’s marked on the metal part of the fuse.
a little stupid to cut the linesto replace fuse. you just need to take of the cap on both side metal holder to the fuse, and replace another with no wire version of the fuse. All the rest are great and clearly demonstrate.
Nice explanation video. Thanks.
I have the same model and it is ancient. Yours looks like you just brought it home from store. Have you actually used it? Mine was turning the commutator black and I had to keep polishing it, then it quit all together. It was pretty obvious, the wires around the fuse were all black and burned, the connector was toast. I found a 15a 250v microwave fuse at ace and it worked, then quit again. That's when I found your video, thought maybe the switch. Turns out its the leads on the brushes are too tight and stop them from hitting the commutator. I to rotated the zip ties to get some slack so they touch and now it works again. My brushes are almost to a 1/4 inch and have not been able to locate new ones.
I have sparks coming out of mine when it’s on any tips
I’ll give it a shot. First; gotta get me a screwdriver or star wrench that’s skinny enough.
I had the same problem. Then I found that the local Walmart had a 44 piece bit set (called "Hyper Tough") with skinny enough extender and star bits. It worked great so I was able to remove the cover of my B&D 320 blower/vac (same as in this video) very easily...and fix the problem. $7.99 for the really good quality bit set.
thank you for the video. I am having the same problem with mine, where did you find the fuse?
It's on Amazon, but a hardware or electronics shop should have it.
@HowToWith GEO Do you think the LeafHog would be damaged if I used it to vacuum maple leaves? They are the little seed pods that have a “wing” attached and they fly through the air like a helicopter.
I did a search for the blower model in the video, and it looks like there's a recall on the unit?
I have the same vacuum/blower and the motor is sparking when I turn it on. Any ideas how to fix it?
It worked for me.
The fuse is known as a UL fuse,replacing it will void UL listing
Husqvarna leaf blower how to repair it
Where did you find the fuse with the wires/pigtails attached? I can only find the ones without a wire extending from both ends. Don't see one in big box stores or on the web. Is there a special name for it? I need one like yours, but a 20A 125V glass (or ceramic) fuse for a B&D LH5000 240 mph blower vacuum.
Were you able to find the fuse?
7/15/21 I have a 20 V B&D leaf blower that turns on for about 5 seconds, then shuts off. Battery volts test is 18 Volts. Any ideas?
How the hell does the switch presser actually actuate the rocker switch? Mine doesn’t reach the rocker.
I am wondering that too. In the video his isn't reaching the rocker switch either unless he pushes on it. The whole mechanism is floppy, doesn't seem to be anything to press the end onto the rocker switch. Maybe the metal piece that is there to put tension on the end pops out of place when taking apart the clam shell cover?
@@bvataha8697 no idea, we ended up just rigging it because no matter what I tried that stupid switch just didn’t work
Same here. Looks like it won't engage unless the latch button is depressed. I came here because mine will only run at low speed, which is too weak to pick up any but the smallest leaves.
My best friend used to work as a tech for B&D, which I completely forgot until just now. I texted him about my issue, and if he has time I'll ask him about the mechanism and report back here.
@@dougfoster445 How did you rig it? I "modified" mine using a drill bit and some hot glue. It's arguably better than the original design, but sadly my main issue is still unresolved. :/
@@jeremiahseitz9842 I didn’t. Just scrapped it. The only way to fix it is to bypass that dumb switch and put in a new one by rigging it
150bt leaf blower it won’t stop
Hi, I like to fix stuff too! I had a very similar leaf blower problem which I show here: czcams.com/video/yZ3B7deK59M/video.html