From what I've read you'll be fine up to a b20 blend (20% biodiesel, 80% regular petro diesel). If you want to run b100 (100% biodiesel), you'll want to verify that all rubber fuel lines can handle it. Most who use lots of biodiesel like to use rubber lines made from "viton".
You'll see benefits for your pump with even just b1 or b2 (1 or 2%, respectively) though.
Mike