Airmar 175WR-4 Transducer Housing Wrench [175WR-4] Marine Navigation & Instruments | Fishfinder Only PYI suggests as preventative maintenance

PYI suggests as preventative maintenance that the PSS bellow be replaced in six year intervals

Marine grade circuit breakers are also available for protection and isolation

and Anemometer/Sensor Transmitter Kit (6332)

AC output power & error codes

Airmar 175WR-4 Transducer Housing Wrench [175WR-4] Marine Navigation & Instruments | Fishfinder Only PYI suggests as preventative maintenance175WR 4 Transducer Housing Wrench A single handed wrench that holds the main thru hull housing via the 'wrench flats' on the top of the housing to facilitate tightening of the hull nut. Use wrench 164WR 2 or 164WR 3 for the hull nut. For use with: B164 B175 SS164 SS264 IMPORTANT: the design of the housing for these transducers changed slightly in June 2012. This wrench is for the newer design and has an internal width of 2 3 4". If you need a wrench