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 TM 5-2805-261-13
2-25. MOTOR DROPPED OVERBOARD (IN SALT
NOTE
WATER). Follow same procedure as Motor Dropped
To remove or attach leads, pull off
Overboard (Not Running) and (Running) but take the
or push on with a slight
motor to organizational maintenance as soon as
counterclockwise twist.
possible, even if it can be started, as salt water can
cause excessive corrosion of ignition system and
C. Lay motor down (spark plug openings down) and
internal parts.
work out all of the water by rotating flywheel
with starter cord approximately 25 times.
2-26. PROLONGED SUBMERSION (FRESH OR SALT
WATER). If motor has been dropped overboard and not
D. Place motor in upright position. Remove high
recovered immediately, then motor must be serviced
speed needle valve and drain carburetor.
within 3 hours after recovery. Notify organizational
maintenance.
E. Reassemble parts you removed and follow
If sand has entered the motor, no attempt at starting
starting instructions (see para 2-8).
After
should be made. Notify direct support immediately.
starting, permit motor to run 1/2 hour or longer
on boat or in a test tank with test wheel.
NOTE
Since this motor is provided with
F. If motor fails to start, remove spark plugs again
needle bearings, it must be
to see if water is present between electrodes.
serviced within 3 hours after
Blow out any water from between electrodes
recovery to avoid costly repairs.
and reinstall or replace with new spark plugs. If
Both fresh and salt water
the motor still fails to start, have it serviced
characteristically will start etching
immediately.
Motors which have been
the highly machined bearing
submerged must be started or disassembled as
surfaces of the crankshaft and
soon as possible or extensive repairs will be
connecting rods as well as the
necessary. To minimize damage, motor must
bearings once exposed to the
be started or serviced within approximately 3
surrounding atmosphere.
hours after recovery.
If service is not readily available, proceed as follows:
NOTE
If motor cannot be started and if
A. Remove motor cover and rinse motor with fresh
service is not readily available,
water.
the
motor
should
be
re-
submerged immediately in fresh
B. Disconnect spark plug leads and remove spark
water to avoid exposure to the
plugs. Reattach leads and ground plugs on
atmosphere. Make arrangements
motor block. (See para 3-10.)
to have it serviced with the least
possible delay.
2-12
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