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.