How to fix a bent lawn mower blade? (Was bent because of collision w/ small tree stump)?

Question

I was mowing the lawn and i went over a very small tree stump that i didn't see and the lawn mower made a loud noise so i shut it off. Then I started it up again but it was vibrating like crazy. So my dad got pissed and now the lawn mower's blade is bent. How should we fix it? If we have to take it somewhere to get it fixed, where, and how much will it cost? Or is it possible to fix it ourselves? Need a lot of answers.

Answer 1

blades cannot be repaired. replace for five to fifteen dollars.

Answer 2

I would think the integrity of the blade would be greatly lessened if you tried to bend it back. For the cost vs. the safety of your legs, I would buy a new one ^_~

Answer 3

You need to replace the blade. They are not expensive. I got mine at Sears for $15.

Answer 4

Just by a new blade.  Will cost too much to fix.  It may be the case that there was damaged done to drive shaft from motor.  Might be a good idea to get all checked out.  good luck.

Answer 5

Trying to straighten the blade will be extremely difficult unless your a machinist they need to be perfectly balance.  You'll save your mower by putting on a new blade and tossing the bent one.  It will also be cheaper than having it straightened and unless you have some specialized equipment you won't be able to straighten it.

Answer 6

buy a new one, or put it in clamps and manually bend it.

Answer 7

mower blades are cheap, and easily replaced, but what gets me is your dad got pissed, ask him if he's ever made a mistake, and tell him he should mow the lawn from now on, Ha Ha! just hope you didn't bend the crank shaft, take the blade off and take the spark plug out and pull the engine through a few times while looking at the shaft, if it's real bent it will be visible, if not a tape measure can be used as a make shift dial indicator, any variance in measurement from a fixed point to center of crank while slowly turning will indicate a bent shaft, in that case dont waste money on a new blade

Answer 8

Well, the easiest thing is to replace it with a new, sharp blade.    They usually come off with a single lock nut on the bottom.   Your lawnmower will be up and running and your Dad will be happy you did it.    

THEN take the old one  check it out.  If it is a simple bend and the steel has not cracked or chipped, take a hammer out to a flat concrete surface and beat the bend out.  remember to turn the blade over and strike it from the other side now and then to get it flat.  If you leave a wobble in the blade the mower will vibrate.

When you are done, take a file to it for a few minutes and put a new edge on the blade and,......presto, you have a backup in case you forget about that stump again (grin).

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