Installation manual
INSTALLATION 
When installing WESTERBEKE engines and generators it is important that strict 
attention 
be 
paid to the following information: 
CODES 
AND 
REGULATIONS 
Strict federal regulations, ABYC guidelines, and safety codes must be complied with 
when installing engines and generators in a marine environment. 
SIPHON-BREAK 
For installations where the exhaust manifold/water injected.eXhaust elbow is close to 
or will be below the vessel's waterline, provisions 
mu~t 
be made to install a siphon-
break in the raw water supply hose to the exhaust elbow. This hose must 
be 
looped a 
minimum 
of 
20" above the vessel's waterline. Failure 
to 
use a siphon-break when 
the exhaust manifold/water injected exhaust elbow 
is 
near or below the loaded 
water line 
of 
the vessel will result in 
raw 
water damage 
to 
the engine and possible 
flooding 
of 
the 
vessel. 
If 
you have any doubt about the position 
of 
the water-injected exhaust elbow relative 
to the vessel's waterline under the vessel's various operating conditions, install a 
siphon-break. 
NOTE: 
A siphon-break 
requires 
periodic inspection and cleaning 
to 
ensure 
proper 
operation. 
Failure 
to 
properly maintain a siphon-break 
can 
result 
in 
catastrophic 
engine 
damage. 
Consult 
the 
siphon-break manufacturer for proper maintenance. 
EXHAUST 
SYSTEM 
The exhaust system's hose MUST be certified for marine use. Conugated Mmine 
Exhaust Hose 
is 
recommended. The use 
of 
this type 
of 
hose allows for extreme bends 
and turns without the need 
of 
additiinal fitting and clamps to accomplish these bends 
and turns .In this regard, a single length 
of 
conugated exhaust hose can be used. The 
system 
MUST be designed to prevent the entry 
of 
water into the exhaust system 
under any sea conditions and at any angle 
of 
vessels heal. 
A 
detailed 
Marine 
Installation 
Manual 
covering 
gasoline 
and 
diesel 
engines 
and 
generators 
is 
supplied 
with 
every 
unit 
sold. 
This 
manual 
.is 
also 
available 
in 
pdf 
format 
on 
our 
website 
to 
download 
Website: 
www.westerbeke.com 
Engines & Generators 
iv 
AVAILABLE 
FROM 
YOUR 
WESTERBEKE 
DEALER 
SIPHON-BREAK 
WITH 
STAINLESS 
LOOP 
FOR 
1" 
HOSE 
PART 
NO. 
044010 










