Brunswick Boston Whaler 21 Guardian Series, Operation & Maintenance Manual

Page: 76 / 128

4-10
Section 4 Boat Systems
Battery Parallel Switch
Your boat is equipped with an emergency battery par-
allel switch. The switch is located on the control con-
sole face. You can use the emergency battery parallel
switch to connect the house battery and the engine
starting battery in parallel if the outboard engine will
not start due to low battery voltage.
The battery parallel switch controls a solenoid that
connects the two batteries. The switch is a 3-position
rocker switch that is ON-OFF-ON. The center switch
position is OFF. Both the left and right switch posi-
tions are momentarily ON when held down.
When you release the switch, it will return to the center
OFF position.
If your outboard engine will not start due to low battery
voltage, use the battery parallel switch to provide
power from the house battery.
Push and hold the battery parallel switch ON to either
the left or right position. Note this position. Hold the
battery parallel switch in the ON position and try to
start the engine.
If the engine does not start, release the battery parallel
switch to the OFF position. Move the battery parallel
switch to ON in the opposite direction. Hold the bat-
tery parallel switch in the ON position and try to start
the engine.