Furuno CH-270 Installation Manual page 29

16. Temporarily fix the shaft retainer to
the main shaft with two bolts.
Tighten it referring to Note 3 on the
next page, after completing this
procedure.
17. Place the flange gasket and hull
unit on the tank flange and
temporarily fix them with bolts and
nuts.
18. Using the hand crank, manually
raise and lower the soundome to
check that it moves smoothly
without hitting the tank. If it does
not move smoothly, adjust the
position of the hull unit by sliding it
on the tank. See Note 1 on the
next page.
19. Securely fasten nuts and bolts
temporarily fastened at step 17.
20. Orient the main shaft so that the
BOW mark is facing ship's bow.
Tighten the shaft retainer.
21. Fix the stopper.
U-nut
Hex. Bolt
M8X25
17
Screw M10X40 (2 pcs.)
Spring Washer
Shaft Retainer
Nut (M16, 2 pcs.)
Spring Washer
Flat Washer
Main Body Flange Assy.
Flange Gasket
Tank Flange
Flat Washer
Hex. Bolt (M16X75)
BOW Mark
17 mm
Shaft Retainer
0-1 mm
Nut
Spring Washer
Stopper
Main Shaft