Can you fix a bent lawnmower blade?
my4ccoa asked:
I don’t know what he hit, but he thinks he’s getting a new mower.
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on Monday, March 30th, 2009 at 12:00 am and is filed under Maintenance & Repairs.
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I don’t know what he hit, but he thinks he’s getting a new mower.
April 2nd, 2009 at 10:54 am
usually ,depending on how bad it’s bent. They are cheap enough so you should go buy a new blade.
April 4th, 2009 at 12:53 am
not really but you can buy a new blade
April 4th, 2009 at 9:03 am
Yes you can, just use a hammer to smooth it back out. Or buy a new blade to replace the bent one. You can even look in your phone book and find a used lawnmower place to find one cheap.
April 6th, 2009 at 5:34 pm
Nope its junk. The blade is anyway’s. Just replace it. You could straighten it sort of, but it wouldn’t be true and that will throw everything off and kill the engine if it’s a regular run of the mill single cut mower.
April 7th, 2009 at 10:29 pm
replace the blade. trying to fix it will compromise the crystal structure of the metal, which has already been damaged, which will eventually result in the blade breaking. if it breaks while it is running the consequences could be catastrophic !
if you bent the shaft that propels the blade, you are certainly better off with at least a new motor. it may be less expensive to buy an new mower.
April 8th, 2009 at 1:00 am
The blade should be replaced, don’t waste your time trying to straighten it. But, before you do anything, try to determine if the crankshaft is bent also. When I hit something with a mower I had, it did bend mine. I had to buy a new mower at that point. I was glad it was a $97 special.
April 8th, 2009 at 8:53 pm
Yes, it can be straightened out with a hammer and big vise or anvil if not bent too badly. Be sure to re-balance it afterward. Best bet is just to buy a new blade. They don’t cost very much. Also by a new bolt and buy it from a lawnmower place so you will get one with the proper hardness. All bolts are not the same. The mower should be fine as long as he has not bent the crankshaft. If its bent, it will vibrate even with a new blade and will either need replaced or repaired.
April 8th, 2009 at 9:06 pm
Just like the brakes on your car, a mower blade is considered to be a “wear part” that is meant to be replaced several times during the lifespan of the mower.
In the overall scheme of things, they don’t cost all that much so buying a new blade is the wisest move. The blades are made from steel that is tempered. They can be straightened but it’s often hard to get them perfect. Keep in mind that this spinning blade is what cuts your grass and if it isn’t running dead true, then you might get a noticable difference in the cut of the lawn. This is especially true on lawn tractors that have either two or three blades under the mower deck.
The other issue is one of vibration. A blade that isn’t running true will often create harmonic vibrations that can affect the life of the bearings that the blade shaft spins on. At that point, the price of the blade begins to look awfully cheap.
April 12th, 2009 at 4:46 am
Oh, absolutely, a new mower is in order.
A riding lawn mower.
Custom made with blue-tooth headphones plugged into the games.
And a can holder.
And a cooler on the back part on the mower above the catcher.
That is, if he just has to use a catcher. Otherwise, the cooler needs to be mounted on the front end.
April 12th, 2009 at 10:15 am
Since the blade is bent, I would suspect the crankshaft is also bent. If the crank is bent it must be replaced along with the blade.(Blades are very hard to get perfectly straight)
If the mower is more than 2 or 3 years old it will probably cost more to replace the crankshaft and blade than the machine is worth.
Sorry to bring this bad news, but I see mowers like this everyday and they are usually returned “Uneconomical to Repair”.