INSTALLATION MANUAL
90-864198020 Page 61 of 77
Boat In Water
AIR ACTUATED SINGLE POINT DRAIN SYSTEM
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.
2. Remove the blue air pump from the engine.
3. Ensure that lever on top of pump is flush with the handle (horizontal).
4. Install air pump on the fitting in the air manifold.
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a
a-Green Indicators
5. Pull lever on air pump up (vertical) to lock pump on the fitting.
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.
7. Immediately remove the blue drain plug from the side of the thermostat housing or the
heat exchanger. This must be removed within 30 seconds to properly vent the cooling
system.
b
a
d
c
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77955
a
b
c
d
Closed Cooled Models Seawater Cooled Models
a-Blue Drain Plug Location
b-Blue Air Pump
c-Air Manifold
d-Green Indicators
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