Yes. Just like any part of your vessel you want to make sure your cutter is working in tip-top shape! We recommend replacing the zinc, wear bearings, sound dampening plugs and stationary screws annually. Depending on how often the vessel is run and the type of water it is run in, you may want to consider replacing these parts every 6 months.
We also recommend sending your cutter(s) into the factory every other year for a reconditioning service which includes: glass bead blasting & cleaning, re-sharpening, new screws & washers, tolerance & wear check, new wear bearings, zinc and sound dampening plugs.