Mainship 40 Trawler Single, Operator'S Manual

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Mainship 40 Trawler Single & Twin • Engines and Transmissions
11.5
11.2 Transmissions
The transmission has a reduction gear which drives
the propeller at a slower rotation speed than that of the
engine. The transmission also has a hydraulic sump
and pump separate from the engine. Transmission oil
level can be checked using the filler cap and dipstick
assembly. Refer to the transmission manual for more
detailed information about transmission operation.
You are connected to your transmission electronically
via the shift controls at the helm stations. With respect
to the transmission control, the shifter has three relative
positions; FORWARD (Fwd), NEUTRAL (center), and
REVERSE (back).
Features of your transmission:
Reverse reduction marine transmission with hydrauli
cally actuated multi-disc clutches .
Suitable for high performance applications in luxury
motoryachts, sport fishers, express cruisers etc .
Robust design also withstands continuous duty in
workboat applications .
Fully works tested, reliable and simple to install .
Compatible with all types of engines and propulsion
systems, including waterjets and surface- pierc
ing propellers, as applicable .
Design, manufacture and quality control standards
comply with ISO 9001
11.3 Operations and Maintenance
In the Underway Chapter, (Chapter 12) you will find
instructions on starting your engines. Also detailed in the
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manufacturer’s documentation supplied with your boat,
you will find instructions on maintenance items that you
may perform yourself. Should you have any questions
regarding maintenance or operations not provided, be
sure and consult your boat dealer.
Once in a while, an engine may not start, even if the lever
is in neutral. The reason may be that the neutral safety
switch is slightly out of adjustment. While you are turning
the ignition key, move the lever up and down slightly over
the détente until the starter kicks in. Have your dealer
check the switch as soon as possible.
Important: Shift the transmission only when the engine speed
is at or below 1000 rpm. Shifting at higher engine speeds could
severely damage the boat, the transmission, and the engine.
Allow the transmission to remain in neutral for a few seconds
before reversing the rotation of the propeller.
11.3.1 Hydrolock
CAUTION
! !
Water entering engine cylinders can cause hy-
drolock and damage the engine. Operate boat prop-
erly to keep water from entering engine. Damage
caused by hydrolock is not covered under warranty.
Hydrolock is caused by water entering the engine cylin-
ders through the exhaust. The following conditions can
cause hydrolock.
Engine shutdown: A sudden engine shutdown while the
boat is moving may force water into the exhaust system.
Anchored or adrift: Rough seas may cause rocking
severe enough to cause water to splash out of the muf-
flers into the engine while the engines are shut down,
anchored from the stern, pulling a sea anchor, or adrift.
Improper hoisting: Operators are sometimes tempted to
reduce hoisting time for propeller changes by hoisting only
the boat stern. Such hoisting can cause residual water in
the exhaust system to enter the engine cylinders.
WARNING
! !
Engine manufacturers do not warranty items dam-
aged by hydrolock!
Transmission models do vary.
This is a basic model.