Without knowing the exact details of your vehicle like the VIN or date of build , fitted to my 2010 CW, march/april 2010 production
373002A110
Is your vehicle High K's? Could be the brushes wore out, I have had one of mine open and at 165000k the brushes were looking 70% worn and armature also had decent wear, clutch pulley was shagged.
You can get the parts to rebuild but tough DIY job without the right tools.
There's a guy in SA selling new $400 shipped genuine.
If you're going down the used path, obviously go for lower k and check the clutch pulley. Should lock in one direction, free spin in the opposite.
Engine rotates clockwise so in that direction it should lock, anti clockwise it should release.
They do fail and seize, mine did and when I went to get a used one it too was seized.