Division 4.1.3 Conditions for a dual-fuel engine to warm-up or start using liquid fuel solely United Kingdom Original text. Later amendments are not shown. 4.1.3.1Division 4.1.3.1 4.1.3.2Division 4.1.3.2 ← Division 4.1.2.3 Division 4.1.3 Division 4.1.3.1 →