6-15
Boat Maintenance
Section 6
Bilge Pump System
The bilge pump and water level sensor are sealed
units and do not require any periodic maintenance.
Check the bilge area weekly to make sure there is no
sludge or debris that could foul the water level sensor
or clog the pump.
Periodically check the condition of the bilge pump by
turning the pump on manually. You should see it
pump water out the through-hull fitting if there is water
in the bilge, or hear the pump motor running.
Trim Tabs
Periodically check the condition of the trim tab actua-
tors. The actuators are completely sealed and require
no maintenance. However, marine growth should be
removed from the actuator shafts by pressure wash-
ing.
Cold temperatures do not affect the trim tab system.
No winterization procedure is necessary.
In saltwater, to control galvanic corrosion, a zinc
anode should be attached to the
top
of each trim tab.
The anode must be in clean, direct contact with the
stainless steel trim plane. Do not ground the trim tabs
to other underwater metal objects.
Erosion of the anode material is a natural result of its
protective responsibility.
Replace the anodes when
they have eroded to one-half their original size.
Refer to the
Lenco
operator’s manual for detailed
information about system operation and maintenance.
!
CAUTION
Test your bilge pump and water level sensor
before each mission. Manually activate the
water level sensor when the rocker switch is in
the AUTO position and verify pump operation.
Clear away any sludge or debris that might
restrict the pump or water level sensor.
Summary of Contents for Boston Whaler 21 Guardian Series
Page 18: ...1 10 Section 1 Safety Deck Occupancy Chart...
Page 20: ...1 12 Section 1 Safety Warning Label Chart 1 2 3 4 5 6 7 8 9 6 0 A B D G C E F...
Page 22: ...1 14 Operator Notes...
Page 52: ...2 30 Operator Notes...
Page 56: ...3 4 Section 3 Fuel Systems Fuel System Diagram 1 2 5 3 6 7 9 4 8 0 A B C...
Page 68: ...4 2 Section 4 Boat Systems Control Console Layout 1 2 3 4 5 7 6 8 9 0 B A C E G I D F H J K...
Page 97: ...5 7 Operator Notes...
Page 126: ...6 20 Operator Notes...