Portable Generator User Manual

TP-6069 6/0314 Section 4 Exhaust System

4.3.2 Mid/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 4-5 for the siphon break

connection. Support the siphon break and hoses to

maintain their position and function. Allow a slight offset

to clear the s tringers or other permanent structures.

Protect the siphon break air inlet from dirt and debris.

Note: To prevent water leakage on the generator set, do

not mount the siphon break directly over the

generator set.

TP-5586-6

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.