17. Before launching the boat, pull up on the manual release valve. Verify that the green indicators are no longer extended.
a - Green indicators
18. Open the seacock, if equipped, or unplug and connect the water inlet hose prior to operating the engine.
Flushing the Power Package (Bravo)
Flushing the Power Package
The boat can be equipped with a combination of any of three different types of water pickups: through‑the‑hull,
through‑the‑transom, and through‑the‑sterndrive. The flushing procedures for these systems are separated into two categories:
sterndrive water pickups and alternative water pickups.
IMPORTANT: Engines that require dual water pickups require a through‑the‑hull or through‑the‑transom pickup in addition to
the sterndrive water inlets.
IMPORTANT: Engines with the sterndrive water inlet blocked off at the gimbal housing and using a through‑the‑hull or
through‑the‑transom pickup need a supply of cooling water available to both the sterndrive and to the engine during operation.
Flushing Attachments
Flushing attachments for dual water pickup
Flushing attachments for side water pickup
a - Flushing device
b - Hose attachment
c - Dual water pickup flush gearcase seal kit
Flushing Device 91‑44357Q 2
Dual Water Pick‑up Flush Gearcase Seal
Kit
91‑881150K 1
Sterndrive Water Pickups
There are two types of water pickups available on Mercury MerCruiser sterndrives: dual water and side water pickups. Dual
water pickups require the flushing device and the flush gearcase seal kit. Side water pickups require the flushing device.
a
6135
Maintenance
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 1C-45
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