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post #1 of 5 Old 10-21-2013 Thread Starter
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Raymarine Fishfinder Transducer

After a weekend sail I took out the transducer and inserted the blank. Leaking enough to cause the bilge pump to run every five minutes. Took out the blank and reinserted the transducer, still leaking. Back and forth changing out o-rings in the process. Finally was able to insert the transducer without any leaks. I guess I won't be removing it for the rest of the season. The transducer has 3 o-rings. Hard to believe it would leak thru. Anyone have similar issues/remedies?
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post #2 of 5 Old 10-21-2013
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Re: Raymarine Fishfinder Transducer

Yes. Which transducer do you have? Is it supposed to have 3 O-rings on it or only two? Are you sure they're the correct (non-standard) size? Did you grease the O-rings or did you forget??

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post #3 of 5 Old 10-22-2013 Thread Starter
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Re: Raymarine Fishfinder Transducer

3 o-rings, correct size. I did not pre-lube though.........
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post #4 of 5 Old 10-22-2013
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Re: Raymarine Fishfinder Transducer

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Originally Posted by brokesailor View Post
3 o-rings, correct size. I did not pre-lube though.........
Ok.. You haven't said which one you have, but my B744V has space for 3 O-rings but only works properly with two (top and bottom - not middle).

You could try a smear of silicone grease but it sounds to me like it's not seating properly at the bottom (you've got some weed caught in the hole).

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post #5 of 5 Old 10-22-2013 Thread Starter
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Raymarine Fishfinder Transducer

Yes I have the same one. Ok I'll try removing the middle O ring. I've always put all 3 o rings on.
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