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E - 3
ENGINE & DRIVE SYSTEM
A. Engine
The V series models can be equipped with variety of
different engine propulsion systems. Please consult
the engine operator's manual provided in your owner's
packet for operation and maintenance information.
B. Stern Drives
A stern drive or inboard/outboard propulsion system
has a piston engine equipped with special marine
components mounted near the transom and coupled
to an external outdrive-type transmission unit. Shifting
is performed within the outdrive upper gear case. This
type of system is depicted in Figure E1.
Figure E1: Stern Drive
C. Inboard V-drives
On the V-drive propulsion system of the inboards, all
shifting and gearing components are installed inside
of the hull, only the propeller shafts and associated
equipment are under the water. The V-drive system
has the en gine mounted in the extreme stern of the
boat with the out put shaft facing forward. A transmis-
sion which performs shifting functions is mounted
di rectly onto the engine. A V-drive reduction gearbox
is mounted di rectly to the transmission. The prop shaft
is then con nected to the V-drive output coupling. See
Figure E2.
Engines, Drives and Instrumentation - Section E
Figure E2: V-drive
D. Volvo Penta IPS Drive-Units
The Volvo Penta Inboard Performance System (IPS)
has twin drive-units that are steerable. These drive-units
turn and point the entire thrust in the desired direction.
The drive-units can be steered independently of one
another. Each drive-unit is coupled to its respective
diesel engine and shifting is performed within the drive-
unit. The drive-units are mounted through the hull at the
stern. This type of system is depicted in Figure E3.
Figure E3: Volvo Penta IPS Drive-Unit
NOTICE
To go from FORWARD to REVERSE, or
REVERSE to FORWARD; always pause at
NEUTRAL and allow engine speed to return to
idle. NEVER shift the unit while engine speed is
above 800 rpm.
Owner's Manual Page 57
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