JRC JMR-5406-X Instruction Manual page 502

Replace the motor.
Starboard side
Two M10 bolts
Port side
Section 15 Maintenance & Inspection
Motor
Two M10 bolts
Motor
15-52
[Starboard side]
Remove the M10 bolts at two
positions.
[Port side]
Remove the M10 bolts at two
positions and pull the motor to
demount it.
Apply grease to the gear wheel
of the replacement motor prior to
installation.
Install the new motor in the radar
antenna.
Fasten the hexagon head bolts
with proper torque (350 kgfcm)
to ensure that none of the bolts
is left without being tightened or
tightened too loosely.
Install the cover by following the
same steps in reverse order.
Turn On the safety switch and
confirm if the equipment
operates properly.