How can I transmit if the drive shaft on a push mower is bent? I hit a curb while mowing, which badly bent the blade and...

I hit a curb while mowing, which badly bent the blade and the mower quit. I removed the blade, and tried to start the mower again. It started and ran, but it feel a little shaky and vibrates a bit. Is this because the blade be off while running it or is there devastate to internal parts? Is the mower still useable? Should I just buy a new blade?
Drive shaft is turning more hastily without blade. Buy a new blade and find out. if you want in recent times put on a new blade and then run it. its the singular way to really know.


Remove the spark plug wire, put the mower up on something so you can win to the shaft. Hold a screwdriver or something like that close to the shaft and have someone slowly turn the engine over. Watch the distance between the shaft and the express doubts your holding. There should be little or no variation in the distance. Was the blade adaptor sour or on when you ran it? It could be damaged also. i didn't know that a lawnmower could run lacking a blade because it's the centrifugal force of the blade that keeps the engine going. is that not true? even if it's running without a blade and it vibrate it would seem to me as thought the shaft would be bent.
try the blade like previously suggested but don't be surprised if the throb gets worse.
good luck to ya.
Answers:    If it vibrate and shakes so hard that it "hovers" then yes, you requirement a new drive shaft.