Furuno ch250s SONAR User Manual


 
16
Protection sponge
O-ring
Remove.
Socket head cap screw
8 pcs, M5x30
Spring washer
Soundome
Apply KINORUSTER.
Trusshead screws (6 pcs.)
Do not unfasten these trusshead
screws. Oil may leak inside.
Rotate 4 or 5 turns by hand to make
sure that turning mechanisms are
functioning properly.
NOTE
Do not unfasten two nuts
painted in red.
Unfastening the nuts may allow
water to leak inside, which can
damage the soundome.
Detaching the soundome
16. Throw away protection sponge placed in soundome.
17. Stand the soundome upright on top of the soundome packing. Fill the soundome with oil
(supplied) so the level is 5 cm on the top of the soudome. Keep the soundome packing for
future use.
Sonar oil
Stand the soundome upright
on top the soundome packing.
Ball wrench
5 cm
Filling the soundome with sonar oil