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On a boat with twin engines it is important that
both engines be running during reverse
procedures, to avoid the risk of water entry (via
the exhaust pipe) into a stationary engine.
5. After shifting is completed, slowly push throttle
lever(s) forward/rearward until desired speed
is achieved.
Any time the boat is operated, be aware of
changes in shift system operation. A sudden
increase in shift effort of the shifter levers, or
other abnormal operation, indicates a possible
problem in the shift system. If this occurs, the
following precautions must be taken:
• With engine running and boat securely tied
to the dock, shift drive into forward and
reverse to ensure there is gear engage-
ment.
•
When docking the boat, all docking maneu-
vers must be performed at slow speed. Pay
special attention to other boaters. Passen-
gers should be informed of potential
problems and precautions taken.
If you suspect there is a problem, see your Volvo
Penta
or MerCruiser
certified dealer as soon as pos-
®
®
sible for proper diagnosis and required service or
adjustment. Continued operation could result in
damage to the shift mechanism and loss of control.
C. Engine Speed Synchronization
During the general operation of a twin engine boat,
it is advantageous for both engines to be operated
at the same engine speed (rpm). This reduces noise
and vibra tion, and can increase propulsion system
efficiency. Setting the throttles so the engines are
running at the same rpm (synchro nized) can be done
by using the synchronization function (if equipped) on
the electronic binnacle control. Follow the engine
manufacturer's operating instructions regarding
synchronization of the engines. These instructions are
included in your owner's packet.
Control Systems - Section F
Attempting to syn chro nize the engines by manually
controlling the throttle lever placement will generally
not be effective. When the engines are in proper
syn chronization, the throttle levers may not neces-
sarily be in the same position.
F - 3
NEUTRAL SAFETY SWITCH
Every control system has a neutral safety switch
incorporated into it. This device prohibits the engine
from being started while the shift lever is in any
position other than the neutral position. If the engine
will not start, slight movement of the shift lever may
be necessary to locate the neutral position and
disengage the safety cutout switch. Should control
adjustments be necessary they must be done by a
authorized service technician.
F - 4
JOYSTICK CONTROL
Joysticks are available on certain V series models.
The joysticks are designed as a docking aid. It can be
used for all your slow-speed maneuvering. The
joystick allows the operator to maneuver and moor the
boat in a simpler and safer manner. See Figures F6,
F7 and F8. Refer to the engine operator's manual for
specific instructions on the proper use of the Volva
Penta's "Joystick" or Mercruiser's "Axius" joystick.
Learn to use the joystick control and its
functions in a safe and correct manner before
using at the dock.
Figure F6: Volvo Penta's "Joystick"
Owner's Manual Page 71
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