Flushing The Power Package; Flushing Attachments; Sterndrive Water Pickups - MerCruiser 4.3L TKS Sterndrive Owner's Manual

Flushing the Power Package

Your boat could come 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. Consult your authorized Mercury MerCruiser dealer for further explanation.
IMPORTANT: Bravo models equipped with closed cooling require dual water pickups and must be equipped with a through the
hull or through the transom pickup in addition to the sterndrive water inlets.
IMPORTANT: Alpha engines with the sterndrive water inlet blocked off at the gimbal housing, and using a through the hull water
inlet, need a supply of cooling water available to both the sterndrive unit and to the engine during operation

Flushing Attachments

Flushing Device
Dual Water Pick‑up Flush Gearcase Seal Kit

Sterndrive Water Pickups

There are two types of water pickups available on Mercury MerCruiser sterndrives: dual water, and side pickups. Dual water
pickups require the flushing attachment (44357Q 2) and the flush seal kit (881150K 1), and side pickups require the flushing
attachment (44357Q 2).
5752
NOTE: Flushing is needed only for salty, brackish, mineral laden or polluted water applications. Flushing is recommended after
each outing for best results.
90-8M0053265 NOVEMBER 2010
Attaches to the water intakes; provides a fresh water connection when flushing the
cooling system or operating the engine.
9192
Blocks off the front water inlet holes on the dual water inlet gearcases.
9194
Dual Water Pickup
91‑44357Q 2
91‑881150K 1
5773
Section 5 - Maintenance
Side Pickup
Page 67