Cleaning depth finder

[Archie Donley]

I am having a fault with my Raymarine depth finder. It might be something on the outside . Is it OK to use a scourer to clean it ? How delicate is the surface and what precautions should I take ?? Archie from Tasmania

[Northbound44]

Scourer??
If you mean a scrapper, that’s what most navigator are using and in my opinion, the easiest way to do it.

[GordMay]

Greetings and welcome aboard the CF, Archie.

Never use solvents. Cleaners, fuel, sealants, paint, and other products thet may contain strong solvents, such as acetone, which attack many plastics, greatly reducing their strength.
Clean the surface with a Scotch-Brite® scour pad and mild household detergent taking care to avoid making scratches. Do not attempt to scrape off marine growth with sheets of metal, screwdrivers or other tools made of metal or hard plastic.
If the fouling is severe, lightly wet sand with fine grade wet/dry paper.

[Northbound44]

“ If the fooling is severe, lightly wet sand... no metal or hard plastic tool”is this what you mean by severe:
https://goo.gl/images/i5Xtam

[GordMay]

Originally Posted by Northbound44

“ If the fooling is severe, lightly wet sand... no metal or hard plastic tool”is this what you mean by severe:
https://goo.gl/images/i5Xtam

Not exactly what I meant; but that would certainly qualify!

I might start that cleaning job with a lawnmower.

[SV Bacchus]

Originally Posted by Northbound44

“ If the fooling is severe, lightly wet sand... no metal or hard plastic tool”is this what you mean by severe:
https://goo.gl/images/i5Xtam

I can honestly say I have never seen anything quite like that!

[Paul L]

Originally Posted by Archie Donley

I am having a fault with my Raymarine depth finder. It might be something on the outside . Is it OK to use a scourer to clean it ? How delicate is the surface and what precautions should I take ?? Archie from Tasmania

You can use a plastic scraper to knock off the big stuff and scourer to finish cleaning it.
I don't buy the ' never put bottom paint on the transducer'. I always put a light coat of bottom paint on my depth and speed wheel.