N40475 Chapter 2 Engine mounting Installation angles These engines are intended to be mounted so that the cylinders are vertical, when viewed from ahead or astern as in figure 1. The operational angles that are permissible in service are a static installation angle of 17 O nose up, adding 3 O for planing craft, with a heel angle of 25 O continuous and 35 O as shown in figures 2 and 3. Nose down capability These engines are capable of an 8 O nose down capability as standard. Figure 1 25 O 25 O 35 O 35 O Figure 2 20 O Figure 3. Page 3