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8. MAINTENANCE, TROUBLESHOOTING
8-3
8.3.2 Manually raising the transducer
If the transducer cannot be raised automatically, manually raise it as follows:
CAUTION
Turn off the hull unit before using the
hand crank.
Bodily injury may result if the power is not
turned off.
1. Turn off the hull unit’s power switch.
2. Open the gear cover.
POWER switch
Gear cover
Screw shaft gear
Motor gear
Screw
(M4 X 8,
4 pcs.)
OFF
ON
Hull unit
3. Mount 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 of turns.)
b) Mounting hand crank
on motor gear
(Requires less 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
Hand crank
4. Turn the hand crank clockwise to raise the transducer.