50
Helm Control Systems
Typical Yamaha Key Switch, Start/Stop Buttons
& Engine Stop Switch
4.5 Engine Stop Switch
Your boat is equipped with an engine stop switch
and lanyard. When the lanyard is pulled it will
engage the switch and shut off the engines. We
strongly recommend that the lanyard be attached
to the driver whenever the engines are running.
If an engine will not start, it could be because the
lanyard is not properly inserted into the engine
stop switch. Always make sure the lanyard is
properly attached to the engine stop switch before
attempting to start the engines.
Refer to the engine owner’s manual for more in-
formation on the engine stop switch.
4.6 Steering System
Power Assist Hydraulic Steering
Power assisted steering systems on twin engine
boats without the joystick option are hydraulic and
is comprised of two hydraulic circuits: a manual
system, which is the control element, and a hy-
draulic power assist pump, which is the working
element.
The manual system is hydraulic and made of three
main components: the helm assembly, hydraulic
hoses and the steering cylinders. The fluid res
-
ervoir for the system is built into the power assist
pump assembly and the helm acts as a pump.
Turning of the steering wheel, pumps fluid through
the hydraulic hoses and activates the hydraulic
steering cylinders causing the motors to turn. A
slight clicking sound may be heard as the wheel
is turned. This sound is the opening and closing
of valves in the helm pump unit and is normal.
The power system is an electronically controlled, 12
volt hydraulic pump that boosts the fluid pressure
being sent from the helm pump to the steering
cylinders to provide “Power” for the steering system
which results in much easier effort at the steering
wheel, even under heavy loads. In the event of
a power loss or failure of the hydraulic steering
pump, the steering system will automatically revert
to a manual hydraulic system. The manual system
operates as described previously in this section and
will require more effort on the steering wheel to
turn the motors.
Steering Cylinders and Tie Bar
The outboards are coupled near the tiller arms by
a tie bar and controlled by one or two steering
cylinders, depending on the options selected. The
Typical Steering Cylinders & Tie Bar
tie bar
engines must be aligned to provide maximum sta-
bility on straight ahead runs and proper tracking
through corners. Dual outboards are aligned so
the engines are towed in slightly (.25” to .5”) at
the propellers. Engine or steering system damage
may require the engines to be realigned.
Electronic Steering (Optional)
Your boat could be equipped with an electronic
steering system that provides precise and respon-
sive steering. Electronic steering is available with
or without a joystick control.
https://www.boat-manuals.com/
Summary of Contents for 300 LXF
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Page 155: ...155 MAINTENANCE LOG Appendix C Date Hours Dealer Service Repairs https www boat manuals com ...
Page 156: ...156 Maintenance Log Date Hours Dealer Service Repairs https www boat manuals com ...
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Page 159: ...159 Maintenance Log Date Hours Dealer Service Repairs https www boat manuals com ...
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Page 161: ...161 Appendix D https www boat manuals com ...
Page 162: ...162 Boating Accident Report https www boat manuals com ...
Page 163: ...163 Boating Accident Report https www boat manuals com ...
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Page 173: ...173 Scout Boats Inc 2531 Hwy 78 West Summerville SC 29483 https www boat manuals com ...