Humminbird PiranhaMAX 155 Installation And Operation Manual page 33

Attaching the Mount to the Base
PiranhaMAX
tilt mount
base
Figure 33
4. Install the handle onto the base, so that the curved part of the handle
faces towards the back of the base, towards the battery well. Use the
four included #8-32 x 7/16" screws, two on each side, to attach the
handle to the base (see the illustrations Installing the Handle Onto the
Base and Sliding in the Handle). Hand tighten only!
Sliding in the Handle
Installing the Handle Onto the Base
Figure 34
NOTE: The handle is keyed so that it only fits onto the base in one direction.
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PiranhaMAX Portable Case Assembly