43
HELM CONTROL SYSTEMS
4.1 General
The helm controls consist of three systems: the
engine throttle and shift controls, the steering
system, and the trim tab control switches. These
systems provide the operator with the ability to
control the direction and attitude of the boat from
the helm station.
Each manufacturer of the control components
provides an owner’s manual with its product. It is
important that you read the manuals and become
familiar with the proper care and operation of the
control systems.
4.2 Engine Throttle & Shift Controls
Electronic Engine Controls
The shift and throttle controls on your boat may
vary depending on the engines used and control
system selected. Refer to the engine or control
manuals for specic information on the controls
installed on your boat.
The helm is designed for a binnacle style control
with a single lever for each engine. The electronic
control system consists of three major compo-
nents: the electronic control head, instruments
and keypad, the control processors and applicable
harnesses. The controls are completely electronic
and there are no cables.
The controls have a single lever for each engine
that operates as a gearshift and a throttle. General
operation will include a position for neutral (straight
up and down or slightly aft of vertical), a forward
position (the 1st detent forward of neutral), and
a reverse position (the 1st detent aft of neutral).
Advancing the control lever beyond the shift range
advances the throttle in forward or reverse. Each
control is equipped with a means of permitting the
engine to be operated at a higher than idle RPM
while in neutral for cold starting and warm-up
purposes. The control levers are equipped with
adjustable control head detent and friction settings.
The engine controls and key pads have integrated
switches and indicator lights which allow the opera-
tor to control all aspects of the boat’s propulsion
Chapter 4:
system. LED lights on the control pad indicate
that the control is activated and the engines can
be started.
The most common features activated or
monitored by the keypad are:
• Starter lockout, which prevents the engine
from being started in gear.
• Gear lockout, which allows engine RPM to be
advanced in neutral safely.
• Battery voltage warning indicator that warns
the operator of high or low voltage supplied
to the system (audible alarm)
Typical Yamaha Twin Engine Control
To Next Page
Loading...
