Question about Black & Decker 19" Electric Lawnhog Mulching Mower with Rear Bag

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I need to change the blade, but am unable to loosen the nut holding the blade in place. the nut and square spacer underneath move together.

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  • jrevcvo Jul 06, 2008

    i'm having a similar problem except my blade is loose. i cannot tighten it because the nut and bolt turn together. i took the motor apart and tried using a vice grip on the bolt, from the top of the mother, but the blade and nut still turn together.

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  • 313 Answers

You need impact gun.air or electric operated impact,run it reverse. it shouldn't be loose like that. i am guessing the armature drop could be the ring is out of the armature groove. ring are located inside the motor assy.

Posted on Jul 06, 2008

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1 Answer

How do I change the blade


Unplug the saw. I repeat, unplug the saw and then lift the guard all the way up. Set the teeth of the blade in a wood board to keep it from moving and then loosen the blade. If that doesn't work, go to a bike repair shop and ask to borrow/rent a thin wrench that fits behind the blade. Probably a 3/4 or 7/8" wrench. Use that to hold the blade secure then loosen the blade nut.

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10 inch table saw blade not square with table


Sounds like the bolts that hold the motor assembly on the table may be loose allowing the blade assembly to move. Look underneath the table and clean out all the dirt and loosen all the hold down bolts and realign the blade and tighten back up.

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How do you change the blade on a miter saw


first unplug the tool, raise the head and loosen the bolt that holds the lower guard in place. DO NOT disassemble the lower guard, pull it down and it will move out of the way somewhat. Next there is a spindle lock that you push in rotate the blade until locked and hold it while removing the hex bolt, which should be left hand thread, I would use a pair of gloves when holding the blade just for safety. Remove the outer flange and spacer (if needed) reassemble in the opposite order and before trying rotate the new blade by hand to make sure turns freely. Let me know if you need more assistance.

Feb 16, 2011 | Saws

1 Answer

How do you keep the blade from moving while you loosen the nut to change the blade on a Troy-Built 9" lawn edger?


stick a block of wood inbetween blade and sheild or spacer behind blade may have a hole to put a punch or nail to keep from turning. hope this helps

Aug 14, 2010 | Garden

3 Answers

Shaft turns while trying to remove blade on B&D MM875 elec. mower


Here's the scoop on the MM875: it has a plastic piece called a "blade insulator" (part # 241381-01) that "locks" the shaft to the blade, so that you can remove the nut by stopping or blocking the blade. If it has been damaged or stripped out, then stopping the blade won't do anything. However, the metal spacer directly under the nut IS still locked to the shaft (because of its shape), so you can use a pipe wrench or something to hold that in place and unscrew the nut. You might even be able to get someone in a home improvement store to do this for you. But you will still need to replace the insulator, which is only a few dollars.

Jul 22, 2010 | Black & Decker 19" Electric Lawnhog...

2 Answers

Change blade miter saw


Un-plug the saw. Remove the screws holding the side saw guard in place. Look at the center of the saw blade for the nut holding it in place. Take a socket wrench that fits the nut and loosen it. You'll need to take a scrap piece of wood 2x4, and jamb the teeth of the blade into it while loosening the nut. The nut will come off first and then a washer/spacer.

Reverse the order for installing the new blade. Make sure you use the proper size diameter blade (10 inch) and mounting hole in the replacement blade. Also, use the provided washer/spacers that were on the original blade and secure the nut. Spin by hand to see if everything clears. Mount the protective guard back on. Plug in the saw and test cut .

Good luck. If you are still unsure - ask a handy neighbor to help. It takes about 5 minutes to complete this task.

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1 Answer

Have a 12 inch tradesman miter saw and can not change the blade


the nut maybe a left handed thread. the norm is righty tight. lefty loosy, try the oposite.

Apr 09, 2009 | Saws

3 Answers

How do I remove the old broken lawn mower blade. I can't seem to keep the bolt and nut from moving together when I try to loosen the bold. thanks in advance


i uses impact gun with 3/4 " socket.run it in reverse or you have to remove the stationary parts of the motor.mark them so u will know how to put them back together & somebody has to hold the armature will u r turning the nut on the blade.

Jul 27, 2008 | Black & Decker 19" Electric Lawnhog...

2 Answers

Blade assembly does not tighten


problem could be the armature ring/ drop. it's for the bearing stopper. if the ring slip off from the grove, all you to do is to put it back to the grove & make sure that the grove are in good shape..its common problem for older armature type.

Jun 15, 2008 | Black & Decker 19" Electric Lawnhog...

3 Answers

Black and decker mm675 lawn hog


Wedge a short piece of 2x4 between the blade and the housing,
turn clockwise to tighten !

May 19, 2008 | Black & Decker 19" Electric Lawnhog...

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