Seacocks And Thru-Hulls; Drain Plugs; Figure 3-7. Garboard Drain - Chris-Craft Lancer 20 Owner's Manual

Seacocks and Thru-Hulls

Each model has thru-hulls associated with it. Depending upon the model and engine configuration of your
boat, it may also include one or more seacocks which allows for raw water engine cooling.
APPENDIX H provides CAD drawings for each boat model, including seacock and thru-hull locations. It
is your responsibility to become familiar with those drawings appropriate for your boat.
Most seacocks are equipped with a shut-off feature, normally in the form of a ball-valve. Each seacock
should be exercised periodically to ensure proper function and to prevent corrosion accumulation.
A seawater strainer, attached to the seacock, protects the system from foreign objects that may enter the
seacock. The strainer should be periodically cleaned and inspected for effective operation.

Drain Plugs

Ensure you re-install the drain plug BEFORE putting the boat back
into the water. Failure to do so will result in flooding of the engine
compartment.
Garboard Drain plugs (Figure
pulled from the water, open the drain plug so as to allow accumulated water to drain. When feasible, and if
applicable, rinse the area with fresh water to prevent salt buildup and corrosion.
If the boat will not be operated for more than a month, the engine should be prepared for extended storage
as outlined in the Owner's Manual, Maintenance, and Warranty manual.
Chris-Craft
3-7) allows water to drain from the boat when trailered. After the boat is

Figure 3-7. Garboard Drain

Systems
3–9