Starter motor troubles

This problem has been coming on gradually and now it is getting to the point where I need to address it. What happens is when I turn the key the starter will click. It takes several tries until the starter spins. I've asked the question on the Triumph Dolomite Club forum and it looks like that either the connections are dirty or the starter needs to be reconditioned. I'm hoping to remove the starter tomorrow if the weather stays dry.