Was given a Craftsman LTX 1000 - do both sides need an axle key?

[jordanwalker1531]

As of right now the right side axle turns so that definitely needs a key, but the left side doesn't move at all. Does anyone know if this model has a differential that would require a key on each side?

 

[ILENGINE]

I would say both sides do require an axle key.