Mercury 520 Bravo Sterndrive - Power Trim Does Not Operate (Motor Runs but Drive Unit Does Not Move); Electrical Analog Trim Gauge Malfunction; Remote Control Operates Hard, Binds, Has Excessive Free-Play or Makes Unusual Sounds

2. Remove the two blue drain plugs from the seawater pickup pump (front,
starboard side).
a - Starboard side blue drain plugs
b - Port side blue drain plug
3. Verify that water is draining from each opening.
4. Allow the system to drain for a minimum of five minutes. Mercury
MerCruiser recommends leaving the drain system open while transporting
the boat or while performing other maintenance to ensure that all water is
drained.
5. For DTS engines, pull the lanyard stop switch (if equipped), or disable the
ignition circuit by pulling the fuse marked "CD."
6. Crank the engine over slightly with the starter motor to purge any water
trapped in the seawater pickup pump. Do not allow the engine to start.
7. Prior to launching the boat or starting the engine, close the drain system
by installing the four blue drain plugs.
8. Open the seacock, if equipped, or unplug and reconnect the water inlet
hose prior to operating the engine.
BOAT OUT OF THE WATER
NOTE: Use this procedure if the air‑actuated single‑point drain system fails.
a
b
a
53834
COLD WEATHER OR EXTENDED STORAGE
eng 99