system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] What does a droid's 'motivator' do?

Also, what does it mean when a droid has a '*bad*' motivator? Is it easy to repair?
gpt
The motivator converts the energy from the power cells into motion. A droid with a bad motivator can't move right, or can't move at all.  

Is it easy to fix?  Well that all depends on what kind of motivator it is (how the droid moves), and what's wrong with it.  Most civilized places in the galaxy you'd just pull it to replace with a spare, and send the defective one back to the manufacturer.