How do I remove and replace the lawnmower blade?
 

"Brigitte J." wrote in message
...
When I try to turn the bolt, the blade turns with it. I'm sure there's a
simple way, but I haven't figured it out.

All help/advice is appreciated.

Thanks,
Brigitte

I suppose I should have stated that it's a Craftsman Self-Propelled mower.

Thanks,
Brigitte

How do I remove and replace the lawnmower blade?
 

When I try to turn the bolt, the blade turns with it. I'm sure there's a
simple way, but I haven't figured it out.

All help/advice is appreciated.

Thanks,
Brigitte

How do I remove and replace the lawnmower blade?
 

In article , Brigitte J.
wrote:

When I try to turn the bolt, the blade turns with it. I'm sure there's a
simple way, but I haven't figured it out.

Hold the blade, then turn the bolt. If you can't hold the blade with a
gloved hand, block it from turning with a scrap piece of wood.

djb

--
"I'll do the stupid thing first and then you shy people follow..." - Frank Zappa

How do I remove and replace the lawnmower blade?
 

Remove the wire from the spark plug first.

--
Mike H


"Dave Balderstone" wrote in message
...
In article , Brigitte J.
wrote:

When I try to turn the bolt, the blade turns with it. I'm sure there's
a
simple way, but I haven't figured it out.

Hold the blade, then turn the bolt. If you can't hold the blade with a
gloved hand, block it from turning with a scrap piece of wood.

djb

--
"I'll do the stupid thing first and then you shy people follow..." - Frank
Zappa

How do I remove and replace the lawnmower blade?
 

"Mike H" 1newsATstelliteDOTmailshellDOTcom wrote in message
...
Remove the wire from the spark plug first.

--
Mike H


"Dave Balderstone" wrote in message
...
In article , Brigitte J.
wrote:

When I try to turn the bolt, the blade turns with it. I'm sure
there's
a
simple way, but I haven't figured it out.

Hold the blade, then turn the bolt. If you can't hold the blade with a
gloved hand, block it from turning with a scrap piece of wood.

djb

--
"I'll do the stupid thing first and then you shy people follow..." -
Frank
Zappa

Yes, for God's sake disconnect that spark plug!

Somehow I was also wondering if that nut might be left-handed. I have a
Murray gas mower that I was going to pull the blade from and sharpen/balance
the blade.

How do I remove and replace the lawnmower blade?
 

"Brigitte J." wrote:

When I try to turn the bolt, the blade turns with it. I'm sure there's a
simple way, but I haven't figured it out.

All help/advice is appreciated.

Thanks,
Brigitte

To keep the blade from moving, I use a little gadget called "Blade
Buster" that I picked up at the local big box store. It works great and
is very simple to use. Here's a link to one for sale on the web:

http://www.gadgetcorner.com/hardw/blade/blade.htm

How do I remove and replace the lawnmower blade?
 

Nah, too involved.

What I do is slip a large spanner on the nut and then start the engine to
the lawnmower. The torque from the engine will unbolt the blade.

I guess I am going to get sued now (rolling eyes) - lol.

Seriously if you have to ask how to remove a blade from the lawnmower
probable you need to have a lawnmower shop do it for yah. Taking off the
blade is easy, it's torquing it down to ensure that it does not fly off is
the difficult part.

"Ermalina" wrote in message
...
"Brigitte J." wrote:

When I try to turn the bolt, the blade turns with it. I'm sure there's
a
simple way, but I haven't figured it out.

All help/advice is appreciated.

Thanks,
Brigitte

To keep the blade from moving, I use a little gadget called "Blade
Buster" that I picked up at the local big box store. It works great and
is very simple to use. Here's a link to one for sale on the web:

http://www.gadgetcorner.com/hardw/blade/blade.htm

How do I remove and replace the lawnmower blade?
 

iBuyMinis wrote:

Taking off the blade is easy, it's torquing it down to ensure
that it does not fly off is the difficult part.


"torquing it down" difficult?

1. You know your weight in pounds.

2. You know the length of the wrench in feet.

3. You know the desired torque in foot-pounds.

It's neither rocket science nor brain surgery.

How do I remove and replace the lawnmower blade?
 

Seriously if you have to ask how to remove a blade from the lawnmower
probable you need to have a lawnmower shop do it for yah. Taking off the
blade is easy, it's torquing it down to ensure that it does not fly off is
the difficult part.

some people might not have the strength to hold the blade while taking the nut
off or even taking the nut off even if the blade is locked into place...

How do I remove and replace the lawnmower blade?
 

Correct me if I'm wrong group but is it absolutely necessary to torque the
nut down? Won't the spinning of the crank torque the blade?

"Die Spammer" wrote in message
...
Seriously if you have to ask how to remove a blade from the lawnmower
probable you need to have a lawnmower shop do it for yah. Taking off the
blade is easy, it's torquing it down to ensure that it does not fly off
is
the difficult part.

some people might not have the strength to hold the blade while taking
the nut
off or even taking the nut off even if the blade is locked into place...

How do I remove and replace the lawnmower blade?
 

"iBuyMinis" wrote:
Correct me if I'm wrong group but is it absolutely necessary to torque
the nut down? Won't the spinning of the crank torque the blade?

Yep, just tight.

--
GO# 40 and F the french.
http://www.countryoforiginlabeling.com/french.html
----------------------------------------------------------------------
http://NewsReader.Com/
50 GB/Month

How do I remove and replace the lawnmower blade?
 

In article , Die Spammer
wrote:

some people might not have the strength to hold the blade while taking the
nut
off or even taking the nut off even if the blade is locked into place...

Then they probably don't have the strength to start the friggin' mower.

Yes, unplug the spark plug wire. And also make sure it's not just
hanging loose where it can contact the plug by accident (important
because the wires on mowers are shart and will swing toward the plug
after you pull it.

Basic small engine safety.

In any event, people as you describe should be invigorating their local
economy by hiring someone who has basic knowledge and skill in dealing
with simple machines.

Sigh. Does anyone else think that as automation permeats our lives we
get stupider?

djb

--
"There is no hell. There is only France." -- Frank Zappa

How do I remove and replace the lawnmower blade?
 

wrote:
Sigh. Does anyone else think that as automation permeats our lives we
get stupider?

"There is no hell. There is only France." -- Frank Zappa

It's all relative. (see sig file)

--
GO# 40 and F the french.
http://www.countryoforiginlabeling.com/french.html
----------------------------------------------------------------------
http://NewsReader.Com/
50 GB/Month

How do I remove and replace the lawnmower blade?
 

I disagree.

Division of labor creates job, professions, etc Automation in itself is an
end to a means.

"Dave Balderstone" wrote in message
news:240520031919287541% Sigh. Does anyone else think that as automation
permeats our lives we
get stupider?

How do I remove and replace the lawnmower blade?
 

any dummies would hold it with vice grips then use wrench dome




"Brigitte J." wrote in message
...
| When I try to turn the bolt, the blade turns with it. I'm sure
there's a
| simple way, but I haven't figured it out.
|
| All help/advice is appreciated.
|
| Thanks,
| Brigitte
|
|

How do I remove and replace the lawnmower blade?
 

there is. use an impact wrench. that means having a compressor. oh
well, you asked!

dave

"Brigitte J." wrote:

When I try to turn the bolt, the blade turns with it. I'm sure there's a
simple way, but I haven't figured it out.

All help/advice is appreciated.

Thanks,
Brigitte

How do I remove and replace the lawnmower blade?
 

iBuyMinis wrote:

Correct me if I'm wrong group but is it absolutely necessary to torque the
nut down? Won't the spinning of the crank torque the blade?


thats lazy and insane and asking to get their toe(s) chopped off

How do I remove and replace the lawnmower blade?
 

Who's going to sit there and figure out that a 180 lb man standing (?) on
the end of a 24" breaker bar will deliver 90 ft/lbs of torque? What if you
needed only 75 ft/lbs? Do you know the formula to determine that you'll have
to stand on the breaker bar at 10" from the center of the nut?

It's not rocket science, but neither is changing a lawn mower blade. If you
need to, rent/buy a torque wrench.

"Ermalina" wrote in message
...
iBuyMinis wrote:

Taking off the blade is easy, it's torquing it down to ensure
that it does not fly off is the difficult part.


"torquing it down" difficult?

1. You know your weight in pounds.

2. You know the length of the wrench in feet.

3. You know the desired torque in foot-pounds.

It's neither rocket science nor brain surgery.

How do I remove and replace the lawnmower blade?
 

Don't be a twit.

How come others got the gist of what I was asking but you are way out in
left field? I never said for the nut not to be torque down, I was asking
whether or not the spinning action of the crank will continue to torque the
bolt down.

You are the lazy one for not reading carefully before jumping to conclusion.

"Die Spammer" wrote in message
...
iBuyMinis wrote:

Correct me if I'm wrong group but is it absolutely necessary to torque
the
nut down? Won't the spinning of the crank torque the blade?


thats lazy and insane and asking to get their toe(s) chopped off

How do I remove and replace the lawnmower blade?
 

Okay:

(1) Turn mower sideways ensuring that carb is positioned correctly
(2) Unplug spark plug cable
(3) Buy and apply blade lock gadget
(4) Buy or borrow air compressor from neighbor
(5) Buy torque wrench

Exactly how much will a shop charge to do the damn thing - lol.

"John" wrote in message
...
Who's going to sit there and figure out that a 180 lb man standing (?) on
the end of a 24" breaker bar will deliver 90 ft/lbs of torque? What if you
needed only 75 ft/lbs? Do you know the formula to determine that you'll
have
to stand on the breaker bar at 10" from the center of the nut?

It's not rocket science, but neither is changing a lawn mower blade. If
you
need to, rent/buy a torque wrench.

"Ermalina" wrote in message
...
iBuyMinis wrote:

Taking off the blade is easy, it's torquing it down to ensure
that it does not fly off is the difficult part.


"torquing it down" difficult?

1. You know your weight in pounds.

2. You know the length of the wrench in feet.

3. You know the desired torque in foot-pounds.

It's neither rocket science nor brain surgery.

How do I remove and replace the lawnmower blade?
 

John wrote:

Who's going to sit there and figure out that a 180 lb man standing (?) on
the end of a 24" breaker bar will deliver 90 ft/lbs of torque? What if you
needed only 75 ft/lbs? Do you know the formula to determine that you'll have
to stand on the breaker bar at 10" from the center of the nut?

It's not rocket science, but neither is changing a lawn mower blade. If you
need to, rent/buy a torque wrench.

"Ermalina" wrote in message
...
iBuyMinis wrote:

Taking off the blade is easy, it's torquing it down to ensure
that it does not fly off is the difficult part.


"torquing it down" difficult?

1. You know your weight in pounds.

2. You know the length of the wrench in feet.

3. You know the desired torque in foot-pounds.

It's neither rocket science nor brain surgery.

A 180 pound man, standing at the end of a horizontally-oriented 2 foot
breaker bar so that the force is applied vertically produces a torque of
360 ft-lbs (not 90).

Technically, Torque = R X F, the crossproduct of the displacement and
force vectors. So, as long as the force is applied at a 90 degree angle,
the torque is simply the force multiplied by the distance from the pivot
point. That's about as simple a "formula" as you can get.

How hard is it to determine that if you want to produce a torque of 50
ft-lbs (the recommendation for my mower) that if you weigh 180 lbs, then
apply your weight fully (stand or whatever) between 1/4 and 1/3 ft (3 or
4 inches) down the length of the breaker bar? No need for great
precision. Like I said it's neither rocket science nor brain surgery.

How do I remove and replace the lawnmower blade?
 

"John" wrote in message
...
Who's going to sit there and figure out that a 180 lb man standing (?) on
the end of a 24" breaker bar will deliver 90 ft/lbs of torque? What if you
needed only 75 ft/lbs?

Evidently you don't know math very well. There are books on the subject and
they give many formulas to work with. You will get that 90# much closer
than you state.
Ed

How do I remove and replace the lawnmower blade?
 

"Edwin Pawlowski" wrote in message
gy.com...

"John" wrote in message
...
Who's going to sit there and figure out that a 180 lb man standing (?)
on
the end of a 24" breaker bar will deliver 90 ft/lbs of torque? What if
you
needed only 75 ft/lbs?

Evidently you don't know math very well. There are books on the subject
and
they give many formulas to work with. You will get that 90# much closer
than you state.
Ed


Or arithmatic. A 180lb man standing on 24" bar will produce 360 ftlbs of
torque.

How do I remove and replace the lawnmower blade?
 

"nospam" wrote in message
...

"Mike H" 1newsATstelliteDOTmailshellDOTcom wrote in message
...
Remove the wire from the spark plug first.

--
Mike H


"Dave Balderstone" wrote in message
...
In article , Brigitte J.
wrote:

When I try to turn the bolt, the blade turns with it. I'm sure
there's
a
simple way, but I haven't figured it out.

Hold the blade, then turn the bolt. If you can't hold the blade with a
gloved hand, block it from turning with a scrap piece of wood.

djb

--
"I'll do the stupid thing first and then you shy people follow..." -
Frank
Zappa

Yes, for God's sake disconnect that spark plug!

Somehow I was also wondering if that nut might be left-handed. I have a
Murray gas mower that I was going to pull the blade from and
sharpen/balance
the blade.

No, not likely. Lawnmowers blades are all made to "tighten" the bolt if
they slip any. Otherwise, the motor torque could possibly spin the
retaining bolt loose.

James...

How do I remove and replace the lawnmower blade?
 

"Brigitte J." wrote in message
...
When I try to turn the bolt, the blade turns with it. I'm sure there's a
simple way, but I haven't figured it out.

All help/advice is appreciated.

Thanks,
Brigitte


Buy and air compressor. Doesn't have to be a 7 HP monster, in fact, a 1 HP
with a 20 gallon tank has served me well for 25 years now. (Used for
everything from blowing dust off the lawnmower, to blowing up kids swimming
pools to airing up automobile tires, an air compressor is not indispensable
to a home owner, but it's towards the top of the list.)

Buy a 1/2" drive impact wrench and a cheap set of impact sockets. (Go cheap
unless you think you're going in the tire changing business).

Turn the mower on it's side.

I'd disconnect the spark plug, but I'm a worry worth. I've never seen a
mower fire without the deadman's switch engaged.

Dribble some penetrating oil on the bolt head.

Wait 15 minutes.

!Bet that impact wrench will spin off that bolt in less than two seconds.
That's how they take them off in the lawnmower shops.

BTW, if the blade is REALLY beat up, buy a new one. They don't cost that
much.

I always balance my blades. I don't think it's necessary to balance a
blade, but it seems to reduce vibration. They sell a cheap (a couple of
bucks) little item in the auto parts store that works fine for balancing
mower blades. (My mower deck has three blades, and it really helps with
them)

James......

How do I remove and replace the lawnmower blade?
 

My bad. Forgot to state "at 1 ft."

"Ermalina" wrote in message
...
John wrote:

Who's going to sit there and figure out that a 180 lb man standing (?)
on
the end of a 24" breaker bar will deliver 90 ft/lbs of torque? What if
you
needed only 75 ft/lbs? Do you know the formula to determine that you'll
have
to stand on the breaker bar at 10" from the center of the nut?

It's not rocket science, but neither is changing a lawn mower blade. If
you
need to, rent/buy a torque wrench.

"Ermalina" wrote in message
...
iBuyMinis wrote:

Taking off the blade is easy, it's torquing it down to ensure
that it does not fly off is the difficult part.


"torquing it down" difficult?

1. You know your weight in pounds.

2. You know the length of the wrench in feet.

3. You know the desired torque in foot-pounds.

It's neither rocket science nor brain surgery.

A 180 pound man, standing at the end of a horizontally-oriented 2 foot
breaker bar so that the force is applied vertically produces a torque of
360 ft-lbs (not 90).

Technically, Torque = R X F, the crossproduct of the displacement and
force vectors. So, as long as the force is applied at a 90 degree angle,
the torque is simply the force multiplied by the distance from the pivot
point. That's about as simple a "formula" as you can get.

How hard is it to determine that if you want to produce a torque of 50
ft-lbs (the recommendation for my mower) that if you weigh 180 lbs, then
apply your weight fully (stand or whatever) between 1/4 and 1/3 ft (3 or
4 inches) down the length of the breaker bar? No need for great
precision. Like I said it's neither rocket science nor brain surgery.

How do I remove and replace the lawnmower blade?
 

Again, my bad. I forgot to add "at 1 ft." My physics degree kinda went out
of the window when I joined management. :-)

"Chas Hurst" wrote in message
...

"Edwin Pawlowski" wrote in message
gy.com...

"John" wrote in message
...
Who's going to sit there and figure out that a 180 lb man standing (?)
on
the end of a 24" breaker bar will deliver 90 ft/lbs of torque? What if
you
needed only 75 ft/lbs?

Evidently you don't know math very well. There are books on the subject
and
they give many formulas to work with. You will get that 90# much closer
than you state.
Ed


Or arithmatic. A 180lb man standing on 24" bar will produce 360 ftlbs of
torque.

How do I remove and replace the lawnmower blade?
 

In article , miller.john@charter-
ihatespam-.net says...
Again, my bad. I forgot to add "at 1 ft." My physics degree kinda went out
of the window when I joined management. :-)

That degree is still out there. ;-)

A 180 lb man standing on the bar 6 inches from the nut would produce 90
lb. ft. of torque.

Rick

"Chas Hurst" wrote in message
...

"Edwin Pawlowski" wrote in message
gy.com...

"John" wrote in message
...
Who's going to sit there and figure out that a 180 lb man standing (?)
on
the end of a 24" breaker bar will deliver 90 ft/lbs of torque? What if
you
needed only 75 ft/lbs?

Evidently you don't know math very well. There are books on the subject
and
they give many formulas to work with. You will get that 90# much closer
than you state.
Ed


Or arithmatic. A 180lb man standing on 24" bar will produce 360 ftlbs of
torque.

How do I remove and replace the lawnmower blade?
 

Disconnect the plug wire. Hold the blade with one hand and use the wrench
with the other. If it won't budge, try turning the other way, some are
reverse threaded.

Bob

"Brigitte J." wrote in message
...
When I try to turn the bolt, the blade turns with it. I'm sure there's a
simple way, but I haven't figured it out.

All help/advice is appreciated.

Thanks,
Brigitte