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Seawater Pickup Hose
Through the Sterndrive Unit
Seawater inlet hose through sterndrive is NOT recommended. Any resulting engine overheat
problems will NOT be covered by BUKH warranty.
Through the Hull or Transom
Seawater pickup hose must be obtained separately if using a through the hull or through the
transom seawater pickup. Hose must be of correct inner diameter (Refer to specifications in this
document) and be a wire reinforced hose of adequate wall thickness to prevent it from collapsing
from pump suction. Be sure to make hose connections with double hose clamps. Secure hose to
prevent contact with any moving parts.
Seacock
Seacock (seawater inlet valve), if used, must be installed between seawater pickup and seawater
pickup pump (or sea strainer) to allow operator to shut off the seawater to flush or drain the
engine, or clean the sea strainer while boat is in the water. Valve used must have an internal
cross-sectional area equal to or greater than hose to prevent restricting water flow. Install valve in
an area where it will be easily accessible. Support valve adequately to prevent hose fatigue. A
brass ball or gate valve is required.
Typical Seacock Installation
a - Seacock
b - Seawater Pickup (Through the Hull Fitting)
c - Hose Connector
Owners Manual
358
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