Furuno CSH-8L Installation Manual page 22

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