Pack of 2 Humminbird PIRANHA MAX4 DI fishfinders

For optimal performance, the transducer must be installed in an area relatively free of turbulence. Here are some guidelines:

Avoid turbulence zones: These are typically found immediately behind or beside the boat’s hull and in the immediate area of the propeller(s).Distance from the propeller: For moderate-speed boats, it is preferable to place the transducer at least 15 inches (38.1 cm) from the edge of the propeller(s).Installation side: The ideal location is usually to the right of the propeller(s).Positioning: The transducer must be mounted parallel to the waterline and fully submerged in water during operation.Planing hulls: If your boat has a planing hull, you can mount the transducer on the planing surface, but avoid mounting it behind a step so that it does not lift out of the water at high speeds.

In addition to the equipment supplied with the depth sounder, you will need the following tools and supplies (not included) for a complete installation:

A 1 amp fuseA fixed electric drill and various drill bitsVertical hand bolts, including a wire stripperA levelA 12-inch plumb bob (weighted string or fishing line)A marker or pencilSafety glasses and a face shieldMarine-grade silicone sealant

For Down Imaging transducers, no downward skeet angle adjustment is required. The operating angle must be set so that the transducer is parallel to the waterline and fully submerged during use. The transducer’s hydrodynamic design directs the beams downward without needing a deadbar adjustment.

The control unit must be connected to a 12 VDC power supply. It is mandatory to use a 1 A fuse (not included) to protect the device.

Connection to the fuse panel: Use crimp electrical connectors (not included) suitable for the fuse panel terminal. Connect the black wire to ground and the red wire to the 12 VDC power supply, installing a 1 A fuse.Connection directly to the battery: Install an inline fuse holder and a 1 A fuse (not included). Connect the black wire to ground and the red wire to the 12 VDC power supply.To minimize potential interference with other marine electronic equipment, a separate power source (such as a second battery) may be required. Warning: The control unit MUST be connected to a 12 VDC power supply, even if your boat uses 24 V or 36 V electrical systems.

For optimal performance, it is crucial to mount the transducer in an area relatively free of turbulence. Here are the points to consider when selecting the best location:

Avoid turbulent zones: Turbulence is typically confined to areas immediately behind, beneath, or alongside the hull bottom and in the immediate vicinity of the propellers.Propeller rotation direction: Observe the rotation direction of your propeller (in forward gear, viewed from the stern). Propellers rotating clockwise create more turbulence on the port side. Propellers rotating counterclockwise create more turbulence on the starboard side.Distance from the propeller: Ensure adequate distance from the propeller. For boats with moderate or high speed, it is preferable to mount the transducer at least 38.1 cm (15 in) from the propeller edge.Ideal location: The ideal location is generally on the starboard side of the propeller(s).Avoid obstacles: Do not mount the transducer too close to trailer pads or rollers to prevent damage during boat loading and unloading.Stepped hulls: For boats with stepped hulls, it may be possible to mount the transducer on the step. Do not mount it on the transom behind a step to avoid the transducer lifting out of the water at higher speeds.Immersion: The transducer must be mounted parallel to the waterline and fully immersed in water during operation.

No, Down Imaging™ transducers do not require the natural 4 to 5 degree tilt (often called a "deadbar" or "skeet") that some traditional transducers may need. During installation, it is recommended to adjust the transducer’s operating angle so that it is parallel to the waterline for optimal performance.