I think that you can contact Navico-Simrad. I don't know if they service them any longer. You can probably take yours apart. There is a good chance that it is the belt, which you can replace.
There is also one for sale on the "Gear for Sale" site here on SBO.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.