Lowrance Hook 3x

[Tim Gamble]

Help please. I have a 3x that works good except when I am running my outboard motor  (25 hp yamaha 4 stroke). When running the motor it will work a few minutes then go blank on the depth reading or goes very erratic showing very deep readings when I know it's not. I can restart it and it works again for a few seconds then back to bad reading. No issues when outboard is off or idling. 

[Wayne P.]

You don't have the transducer attached to the hull so it can give you depth when the boat is moving faster than idle speed. Post a picture of your transducer installation.