Flymo easiglide 300v lawnmower vibration

[Gossamer]

Morning.
I have the above lawnmower and it’s developed an awful vibration when in use.
I did a Google search and thought it might be the blade so replaced it, and whilst performance is a little better, the vibration is still there which is incredibly annoying!
Nothing seems obviously loose so I’m not sure what else to do. Any ideas?! Thanks.

 

[Burnerman]

It sounds like the machine has clipped some concrete or whatever.....although the blade takes most of the impact, on occasion the motor shaft suffers too and bends a fraction.
John

 

[Gossamer]

Thanks. Does that mean it’s knackered?

 

[Burnerman]

If the main motor shaft is bent, even so slightly then I guess it is.....I have a dial indicator which I use on occasion to show any irregularities up, but maybe you can see if you spin the blade by hand and see if the distance between the blade end and deck changes at all.
Replacement motors for these are rarely economically viable.
John