Furuno CH-250 Bedienungsanleitung PDF herunterladen (Seite 104)

6-2

6.3 Hull Unit Maintenance

6.3.1 Lubrication

Grease the raise/lower screw shaft once a year. Also, grease the raise/lower main shaft (upper

part of the grease cotton retainer) twice a year. These parts can be accessed by removing the

raise/lower drive assembly cover.

6.3.2 Manually raising, lowering transducer

WARNING

Turn off the power at the ship's mains

switchboard before conducting the

procedure below.

Rotating motor can cause bodily injury.

1. Turn off the breaker on the hull unit.

2. Set 19 mm ratchet wrench to nut and turn.

3. Check that the transducer raises and lowers smoothly, from the upper to the lower limit

positions. If the transducer cannot be raised smoothly, do not use excessive force; the shaft

may bend, causing damage to other components.

4. Check soundome and tank. Remove marine life with fine sandpaper or piece of wood.

Attach ratchet

wrench here.

Figure 6-1 Hull unit

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Furuno CH-250 Bedienungsanleitung Seite 104