Was curious to look this up, because I have a Lewmar. Looks like replacement motors can be bought and its doable to replace yourself. Maybe not the plan you like, but wait till it craters and replace the motor? Motor price is around 15% of total unit replacement value. I guess it would suck to have it fail in service, but also not the end of the world to crank up that anchor. Carry the spare motor just in case?
Also, i'm kind of skeptical that the failure would be the motor.