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Posted by Rudy on June 27, 2009, 1:58 pm
>> Black & Decker lawnmower. How to remove blade from electric
>> lawnmower? Model MM525 which is very much like the MM575.
>> Is there a simple, or complicated, way to keep the motor shaft from
>> turning, when trying to loosen the nut on the end of the shaft?
Wedge a piece of 2 by 4 or such against the blade/deck housing so it can't
turn.
Undo the nut with a socket wrench
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Posted by tim birr on June 27, 2009, 4:35 pm
wrote:
> mm wrote:
> > Black & Decker lawnmower. =A0How to remove blade from electric
> > lawnmower? =A0Model MM525 which is very much like the MM575.
> > Is there a simple, or complicated, way to keep the motor shaft from
> > turning, when trying to loosen the nut on the end of the shaft?
> Yes, with an Impact wrench; you'll have that nut in your hand faster than
> you can say, "wow, that's pretty cool".
> Jon
Not sure of the problem. I have a similiar model....or used to ...the
CM1000...you used the wood to jam the blade and you just "unscrewed
it." It was pretty simple. If you are having problems, there may be
more wrong than something simple, because it is really pretty simple.
Wear gloves though when doing this.
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Posted by Big Bob on June 27, 2009, 12:45 pm
Make sure that they do not use reverse threads or you will be tightening
instead of loosening
> Black & Decker lawnmower. How to remove blade from electric
> lawnmower? Model MM525 which is very much like the MM575.
> Is there a simple, or complicated, way to keep the motor shaft from
> turning, when trying to loosen the nut on the end of the shaft?
> I have to remove the blade to replace the fan and the manual says to
> use a 2x4 to keep the blade from turning. I do keep the blade from
> turning, but the nut and shaft turn together anyhow, so there is no
> unscrewing.
> I figured if I broke the plastic fan off, I might have enough room for
> vise-grips. Do you think they could nick, whatever, the shaft enough
> to unbalance it?
> (FTI, a third of the plastic fan was broken off so I tried to knock
> off the rest with a hammer. It cracked easily and fell off in
> suceessive pieces. Unfortunatately, that was stupid because I also
> cracked the blade spacer, a cast metal piece, that now I have to
> replace. :( 3 dollars and a trip to the store, 10 miles away.
> Fortunately I have to drive by there next week anyhow.)
> Thanks a lot.
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Posted by William Munny on June 27, 2009, 3:20 pm
> Black & Decker lawnmower. How to remove blade from electric
> lawnmower? Model MM525 which is very much like the MM575.
> Is there a simple, or complicated, way to keep the motor shaft from
> turning, when trying to loosen the nut on the end of the shaft?
> I have to remove the blade to replace the fan and the manual says to
> use a 2x4 to keep the blade from turning. I do keep the blade from
> turning, but the nut and shaft turn together anyhow, so there is no
> unscrewing.
> I figured if I broke the plastic fan off, I might have enough room for
> vise-grips. Do you think they could nick, whatever, the shaft enough
> to unbalance it?
> (FTI, a third of the plastic fan was broken off so I tried to knock
> off the rest with a hammer. It cracked easily and fell off in
> suceessive pieces. Unfortunatately, that was stupid because I also
> cracked the blade spacer, a cast metal piece, that now I have to
> replace. :( 3 dollars and a trip to the store, 10 miles away.
> Fortunately I have to drive by there next week anyhow.)
> Thanks a lot.
When all else fails, RTFM or call the mfg.
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Posted by Don Young on June 27, 2009, 11:37 pm
> Black & Decker lawnmower. How to remove blade from electric
> lawnmower? Model MM525 which is very much like the MM575.
> Is there a simple, or complicated, way to keep the motor shaft from
> turning, when trying to loosen the nut on the end of the shaft?
> I have to remove the blade to replace the fan and the manual says to
> use a 2x4 to keep the blade from turning. I do keep the blade from
> turning, but the nut and shaft turn together anyhow, so there is no
> unscrewing.
> I figured if I broke the plastic fan off, I might have enough room for
> vise-grips. Do you think they could nick, whatever, the shaft enough
> to unbalance it?
> (FTI, a third of the plastic fan was broken off so I tried to knock
> off the rest with a hammer. It cracked easily and fell off in
> suceessive pieces. Unfortunatately, that was stupid because I also
> cracked the blade spacer, a cast metal piece, that now I have to
> replace. :( 3 dollars and a trip to the store, 10 miles away.
> Fortunately I have to drive by there next week anyhow.)
> Thanks a lot.
You can try a short box wrench and small hammer. The inertia of the rotor
should enable you to use them as a primitive impact wrench. The type impact
driver you strike on the end with a hammer would also likely work with a
little patience and skill. Of course, a power impact wrench would be the
best.
Don Young
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>> lawnmower? Model MM525 which is very much like the MM575.
>> Is there a simple, or complicated, way to keep the motor shaft from
>> turning, when trying to loosen the nut on the end of the shaft?