I recently had a problem where the motor would chatter when deployed and would not respond to the pedal. I spoke to Lowrance who advised the pedal needed to be calibrated and that it is a non-published service procedure in the manual nor is it on their website. It took under a minute to perform and can be done on the water or on the trailer if you have the option to deploy the motor while on the trailer. See the image below for the procedure. Hopefully this will help others.

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