Furuno SFD-1010 Operator's Manual page 188

5. INSTALLATION
Flush mounting
bracket
Note: Be sure to manually tighten the wing bolts without using any tools. When
3. Align the adhesive surface of mounting sponge to the backside of this equipment, and
attach the mounting sponge to the equipment.
5-4
tightening the wing bolts, gradually tighten four wing bolts equally. You can
use tools to tighten the wing nuts.
Wing bolt
Wing nut
Flush mounting
bracket
Protector