1. MOUNTING
1-12
1.1.4 Confirmation of transducer movement
Confirm that the hull unit moves upward/downward smoothly by using the hand crank,
which is supplied attached to the hull unit.
Note: When lowering the transducer, confirm that there is enough space below the ship’s
bottom.
CAUTION
Turn off the POWER switch on the hull unit before using
the hand crank.
Bodily injury can result if the hand crank rotates unexpectedly,
because the raise/lower motor may start up.
1. Open the gear cover.
POWER switch
Raise/lower drive
assembly
Gear cover
Screw shaft gear
Motor gear
M4x8, 4 pcs.
Hull unit, upper view
2. Attach the hand crank onto the screw shaft gear or motor gear.
a) Mounting hand crank
on screw shaft gear
(Requires greater force but
smaller number-or-turns.)
b) Mounting hand crank
on motor gear
(Requires smaller force but
greater number-of-turns.)
Hand crank
Fix with screw
(Use cover fixing screw.)
Fix with screw
(Use cover fixing screw.)
Screw shaft gear
120 turns to move main shaft by 600 mm.
210 turns to move main shaft by 600 mm.
Motor gear
3. Turn the hand crank in both clockwise and counterclockwise directions. Confirm that
transducer is raised and lowered smoothly.
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