Air-Actuated Single-Point Drain System; Boat In The Water - MerCruiser 4.3 TKS User Manual

Section 6 - Storage
a
a - Water circulating pump hose
b - Fuel cooler to thermostat housing
a
Air‑Actuated Single‑Point Drain System

Boat in the Water

NOTE: This procedure is written for the air pump that is attached to the engine. However, any air source can be used.
1. Close the seacock (if equipped) or remove and plug the water inlet hose.
2. Remove the air pump from the engine.
3. Ensure that the lever on top of the pump is flush with the handle (horizontal).
4. Install the air pump on the actuator fitting.
5. Pull lever on air pump (vertical) to lock pump on the fitting.
c
b
6. Pump air into the system until both green indicators extend and water drains from both sides of the engine. The port side
will begin draining before the starboard side.
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a - Check valve (if equipped)
6131
e
a
b
a -
b -
c -
d -
e -
d
8293
90-8M0053372
6130
Actuator fitting
Green indicators
Manual release valve
Air pump
Lever (locking)
NOVEMBER 2010
eng