Kohler 3.5CFZ, 4CZ, 5CFZ, 6.5CZ Exhaust Systems, Closed/Heat Exchanger Cooling System

INPUT STOP/START

10A FUSE

00 0 0 0 1/10

TOTAL HOURS

BATT.

CHRG.

11

1

2

10

3

4

5

6

NOTE

Use two hose clamps on each end of all flexible exhaust hose connections.

7

8

9

258000-D

1.	Exhaust Manifold	6.	Seawater Strainer
2.	3 ft. (1 m) Max.	7.	Intake Strainer
3.	Engine-Driven Seawater Pump	8.	Engine Coolant
		9.	Seawater
4.	Heat Exchanger
		10.	Seacock
5.	Waterline	11.	Coolant Recovery Tank

Figure 6-15. Closed/Heat Exchanger Cooling System

Exhaust Systems

General

Water-cooled exhaust lines should be used in all marine installations. The hose used for the lines should have a 2 in. (51 mm) inside diameter. Keep the lines as short and straight as possible. The use of two hose clamps on each end of flexible exhaust hose connections is highly recommended. ABYC Safety Standards P-1.6.c recommend a pitch of at least 1/2 in. (12.8 mm) per running foot (30.5 cm). Use flexible steam hose conforming to UL Standard 1129 for “Engine wet exhaust components” between the mixing elbow and the exhaust outlet. A silencer should be independently mounted to eliminate any stress on the exhaust system and exhaust manifold/mixer elbow. See Figure 6-16 for the exhaust connection to the mixer elbow.

1	1-894
1. Seawater/Exhaust Outlet

Figure 6-16. Mixer Elbow/Exhaust Connection

TP-5695 12/93 Installation 6-9