Can someone help me with lawn mower blade replacement advice?

I think I should replace the blade on my electric lawn mower; it is badly nicked and cuts ragged.


Do I just get one the same length from a hardware store, and loosen the nuts and bolts and replace it?


Does a new blade have to be sharpened with a whetstone to remove the factory paint?


If so, how do I do that? I have a hand whetstone.


Thanks for any good advice out there.Can someone help me with lawn mower blade replacement advice?
Just get a blade of the same length and bolt it on. Nothing more required. Just make sure you get it on right side down - sounds silly but wouldn't beleive how many people install blades upside down.Can someone help me with lawn mower blade replacement advice?
just get a blade the same size install you dont have to take paint off
You can purchase a new blade of the same length and it is ready to install as you descibed