I take several towels along on this type of service call, never knowing if
the flap is there or not. Place the towels around the transducer and then
QUICKLY remove the suspect one. Cap it off right away with a plug/cover or
the substitute transducer. Be aware that some replacement transducers with
the same part number are now smaller in diameter than the original ones and
need an adapter sleeve to fit properly inside the old through hull fitting.
Most replacement transducers come with the adapter sleeve(s) in case you
need them.
Doug K7ABX


"Gerald Atkin" wrote in message
...
On Tue, 8 Jun 2004 09:14:22 -0400, Gerald Atkin wrote:

Thanks for all the help and good suggestions. I am replacing an ST-50
transducer and have acquired a new insert with the flap feature so I trust
this will ease the withdrawl in the future.

Jerry