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1. MOUNTING
1-14
1.1.4 Confirmation of transducer movement
After the hull unit installation, confirm that the transducer moves upward and downward
smoothly using the hand crank. The hand crank is attached to the hull unit.
Note: When moving the transducer downward, make sure 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 on the hull unit.
Screw shaft gear
M4x8, 4 pcs.
Gear cover
[POWER] switch
Motor gear
Hull unit
2. Attach the hand crank onto shaft gear or motor gear depending on circumstance.
Hand crank
Tighten screw.
(Use screw from cover.)
Motor gear
Tighten screws.
(Use screw from cover.)
Shaft gear
Shaft moves 600 mm per 210 turns of crank.Shaft moves 600 mm per 120 turns of crank.
a) When crank is atached to shaft gear
(Requires greater force but less turns.)
b) When crank is atached to motor gear
(Requires less force but more turns.)
3. Turn the hand crank in both clockwise and counterclockwise directions. Confirm that
transducer is raised and lowered smoothly.