Flymo Venturer 320 seems to lack power?

Hi everyone,

My ageing electric lawnmower seemed to literally overnight appear 'gutless', not revving up to full power. I am not sure if it is the bearings, as it fires up (slower than before) and almost comes to a halt when cutting grass.

I have had it apart and cleaned it out, checked connections, squirted it with WD-40, checked the switch.. but alas, still no joy.

Is anyone able to confirm if it does sound like the bearings, before I toddle off and buy a new mower? (I first thought capacitor, but that's just a guess, so don't laugh!).

Hope you can help! Thank you