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Volvo Penta D12 - Low Speed

Volvo Penta D12
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46
Operation
Lowspeed (option)
The Lowspeed function is only available for engines
with hydralic reverse gear.
For boats with powerful engines, where the boat
speed at idle is too high, Lowspeed is used to reduce
boat speed by reducing propeller rpm - compared to
normal at engine idle speed.
N = Neutral idling (reverse gear disengaged, engine
runs at idle speed)
F = Forward idling (reverse gear engaged for move-
ment ahead, engine runs at idle speed), maxi-
mum slip in reverse gear.
R = Reverse idling (reverse gear engaged for move-
ment astern, engine runs at idle speed), maxi-
mum slip in reverse gear.
A = Lowspeed active. Propeller rpm is increased with
increase of throttle, engine rpm is not affected.
B = Lowspeed deactivated. Propeller rpm is in-
creased with engine rpm, engine rpm will in-
crease with throttle.
Engaging Lowspeed
1. Move the lever to neutral position.
2. Press the neutral button (N) to activate
Lowspeed. When Lowspeed is engaged a pop-up
(A) is shown on the tachometer display. It is pos-
sible to acknowledge pop-up by pushing NAVIGA-
TION WHEEL.
3. Active Lowspeed is indicated by an icon, , on
the tachometer display (D).
IMPORTANT! If Lowspeed initializing pop-up (B)
and then icon, , are shown on the tachome-
ter display (C), Lowspeed is not ready to use.
Normal gear shifting until Lowspeed is activated
(D).
IMPORTANT! Delay in gear shifting may occur
when Lowspeed is active.
Disengaging Lowspeed
1. Move the lever to neutral position.
2. Press the neutral button (N) to deactivate
Lowspeed. A pop-up (E) is shown on the tacho-
meter display. It is possible to acknowledge pop-
up by pushing NAVIGATION WHEEL.
3. The indication in tachometer display goes out.
Lowspeed activated - Function
active.
Lowspeed initializing - Low-
speed is not ready to use.
(Twin disc)
Pop-up when initializing Low-
speed - Lowspeed is not ready
to use.(Twin disc)
Pop-up when Lowspeed is
engaged. It is possible to ac-
knowledge pop-up by pushing
NAVIGATION WHEEL.
Pop-up when Lowspeed is dis-
engaged. It is possible to ac-
knowledge pop-up by pushing
NAVIGATION WHEEL.
(A)
(B)
(C)
(D)
(E)

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