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S
ECTION
5. E
E
NGINE
XHAUST
(
S
WITH
TANDARD
The underwater exhaust system (Figure 4.7.1) used
with inboard V-drive engines is designed so that
water from the raw water cooling system enters
the exhaust system through elbows (engine side)
where water and exhaust are mixed. Water and
exhaust are then pumped overboard through muffler
then the exhaust outlet tube and expelled under the
boat. When operating at lower RPMs, there is
insufficient exhaust pressure to utilize the
underwater exhaust system and a conventional
exhaust system with through-hull outlet fitting is
provided as a bypass exhaust system for each
engine. Make sure water is flowing from the exhaust
outlets while the engines are operating. Prior to
every boat use, examine the exhaust system fittings
to ensure tightness.
!
WARNING
Hose clamps must be tight at all times to avoid
exhaust leaks.
E
S
(
XHAUST
YSTEM
WITH
(P
S
S
)
ORT
IDE
HOWN
(F
. 4.7.1)
IG
EXHAUST BYPASS
OUTLET
UNDERWATER
EXHAUST OUTLET
(BOTTOM PAINT INSIDE OF OUTLET)
NOTE: EXHAUST HOSE ROUTING MAY BE DIFFERENT THAN THIS
ILLUSTRATION DUE TO BILGE LAYOUT REQUIREMENTS FOR
DIFFERING ENGINE AND EQUIPMENT OPTIONS.
®
(375 Sundancer
340 Sundancer
4 • B
ILGE
S
YSTEM
I
V-D
)
NBOARD
RIVE
S
V-D
E
TANDARD
RIVE
NGINE
®
)
& U
NDERWATER
A drain plug is located on each muffler. When
servicing or winterizing, remove the plug to drain
the water out of each muffler. Replace the plug after
all water has drained from the muffler.
U
E
NDERWATRER
XHAUST
(F
. 4.7.2)
IG
UNDERWATER
EXHAUST OUTLET
(BOTTOM PAINT INSIDE OF OUTLET)
NOTE: EXHAUST HOSE ROUTING MAY BE DIFFERENT THAN THIS
ILLUSTRATION DUE TO BILGE LAYOUT REQUIREMENTS FOR
DIFFERING ENGINE AND EQUIPMENT OPTIONS.
)
MUFFLER
G
EAR
O
UTLET
EXHAUST HOSE
EXHAUST
HOSE CLAMPS
FIBERGLASS
TUBE
FWD
PORT
STBD
PORT ENGINE
EXHAUST HOSE
4.7
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