Submersion And Recovery; De-Water Procedure - Evinrude 55 HORSEPOWER MRL Operator's Manual

Using the MFE Outboard

SUBMERSION AND RECOVERY

The 55MFE is not a submersible engine. Due to the extreme operating conditions this engine
may experience during combat, BRP has incorporated a crankcase drain system to allow the
engine to be de-watered should submersion occur. This de-watering system will allow the op-
erator to quickly remove water from inside the engine, re-start the engine, and operate the
CRRC to get out of harms way. BRP has develop this de-water procedure to quickly purge the
engine of water and to lubricate the critical components of the engine. In most cases this will
allow the operator to return to normal operation without damage to the engine. Submersion of
the 55MFE should be avoided at all costs. Damage could occur to the engine wiring harness
and water could contaminate the oiling system. Extended submersion, particularly in salt water
could result in corrosion of internal components such as piston rings, cylinder sleeves, and
bearing.

DE-WATER PROCEDURE

De-water valves are available to quickly drain
water from the engine if the MFE outboard is
temporarily submerged during deployment, or
during an accidental rollover.
Once an outboard has been submerged in
fresh or salt water, it must be serviced within
three (3) hours of recovery. Immediate ser-
vice can minimize the corrosive affect that air
has on the polished surfaces of the crank-
shaft, connecting rods, and internal power-
head bearings.
IMPORTANT: If the outboard cannot be start-
ed or serviced immediately, it should be re-
submerged in fresh water to avoid exposure
to the atmosphere.
Place shift lever in NEUTRAL and remove
emergency stop clip and lanyard.
Twist throttle grip to slowest idle position.
1
1. Slowest idle position
26
Turn the drain valves forward to the DRAIN
position.
Tilt outboard to the full tilt position and turn so
the drain valves are on the lowest side.
To avoid outboard falling during de-
water procedure, tilt/run lever MUST
remain in the TILT position.
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CAUTION