There may be a set screw holding the lever to the shaft. If it fell out you will see a small hole in the shaft where it goes You'll need an hex key (allen) wrench to tighten it. . You can get a set of them at any hardware store. Get the cheapest set. I say a set because you probably won't know what size you need as Euro Pro may be metric.
Last edited by BellaBoo; 12-12-2012 at 06:30 AM.