Section 5 - Maintenance
90-879172181 eng FEBRUARY 2011 Page 101
18. Install the drive cover, if equipped. Refer to Installing the Drive Cover.
Seawater System
Draining the Seawater System
IMPORTANT: The vessel must be as level as possible to ensure complete draining of the cooling system.
Drain the seawater system of the power package before flushing or before cold weather (freezing temperature), seasonal storage,
or extended storage.
IMPORTANT: The engine must not be operating during the draining procedure.
Boat Out of the Water
1. Remove the boat from the water.
2. Open the seawater inlet seacock and seawater discharge (return) seacock.
3. Drain the seawater.
4. On models with a drop box and engine‑mounted transmission oil cooler, remove the drain plug and drain the seawater.
Typical
a - Drain plug
b - Engine‑mounted oil cooler
5. On models with a drop box and drive mounted transmission oil cooler, as shown, remove the drain plug. Drain the seawater.
a - Drain plug
b - Transmission oil cooler
6. On models equipped with a seawater strainer, refer to
Seawater Strainer.
7. Apply sealant to the drain plugs of the transmission oil coolers before installation.
Tube Ref No. Description Where Used Part No.
19
Perfect Seal Drain plug 92-34227Q02
8. Install and tighten the oil cooler drain plugs securely.
9. Place a tag at the helm and in the engine compartment stating that the seacocks are open and must be closed and all drain
plugs and hoses installed, prior to placing the boat in the water.
Boat In the Water
!
CAUTION
Water can enter the bilge when draining the seawater system, damaging the engine or causing the boat to sink. Remove the
boat from the water or close the seawater inlet and discharge seacocks and operate the bilge pump when draining. Do not
operate the engine when draining the seawater system.
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