Bukh D4 - Optional; Lowspeed

Optional
Lowspeed
The Bukh Lowspeed function is available for
engines with hydraulic transmissions.
Boats with powerful engines can have high speeds
even at low revolutions; the low speed function
reduces speed.
N = Neutral position.
Transmission is disengaged and engine
revolutions are at idle.
F = Forward at idle.
The transmission is engaged for operations
ahead and the engine is at idle; this involves
maximum trolling in the transmission.
R = Reverse at idle.
The transmission is engaged for operations
astern and the engine is at idle; this involves
maximum trolling in the transmission.
A = Low speed engaged.
The transmission affects propeller revolutions.
The engine is not affected.
B = Low speed disengaged.
The control affects engine speed and propeller
revolutions.
P0012978
Engaging the lowspeed function
1 Move the lever to the neutral position.
2
Press the Lowspeed button on the control or
on the helm station panel to activate the
lowspeed function.
An audible
signal and the “Lowspeed activated”
message (A) will be displayed on screen to
confirm that the function is on.
is shown on the screen if the low speed function
is active (B).
When the
low speed function is engaged, a delay may
occur when shifting.
Disengage the lowspeed function
1
Move the lever to the neutral position.
2
Press the Lowspeed button on the control or
on the helm station panel to disengage the
low speed function.
Two audible signals confirm that the function is
switched off and the “Lowspeed deactivated”
(C) message is displayed on the screen.
B
B
R
F
N
A
A
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