4.3.2Mid/Below-Waterline Installation
Follow USCG Regulations for installing an antisiphon provision to prevent raw water entry into the engine. Use the siphon break if the exhaust manifold outlet is located less than 23 cm (9 in.) above the waterline when the craft is loaded to maximum capacity. Install the siphon break at least 31 cm (1 ft.) above the waterline using the instructions provided with the siphon break kit.
Note: An improperly installed siphon break will cause engine damage and may void the warranty.
Install the siphon break above the highest point in the exhaust line between the heat exchanger and the exhaust mixer. See Figure
Note: To prevent water leakage on the generator set, do not mount the siphon break directly over the generator set.
1
1. Cut hose and connect siphon break and hardware
Figure 4-5 Siphon Break Connection (4EFOZ/5EOZ model shown)
Mount a typical silencer’s base no more than 1.2 m (4 ft.) below the highest point in the exhaust line. Attach a separate wood mounting base to the hull stringers or
other suitable structures. Use the silencer manufacturer’s recommendation for securing the silencer to the hull. Mount the silencer with the outlet not more than 3 m (10 horizontal ft.) from the engine’s exhaust manifold outlet. Use a USCG-type certified marine exhaust hose.
14 Section 4 Exhaust System |