Humminbird 7300211 speed unit

I would suggest getting a transducer extension cable and installing the t'ducer on the left side of the boat.

Hi!
Since your unit isn't listed in their owners manual section, you'll have to contact their support rep.

http://www.humminbird.com/support/Contact_Support.aspx

Hope this helps you out.

I have no idea, I use these same ones and havve several mounted and they are used both in summer and winter, never had one leak. I also looked up these and did not see where there were any issues with this problem. I suggest you call Humminbird and talk to them, they are usually very helpful.
Toll-free: 1-800-633-1468
Monday - Friday
8:00am - 4:30pm CST

yes, generally there is an inline fuse on the hot (red) wire. it is incased in a white sleeve that twists apart and reveals the fuse. if its not the fuse check the battery or connections to the back of the depth finder.

More than likely you have your sensor run underneath the boat and therefore the sensor is directly in the water. When you speed around the hot water on top is what your sensor is picking up, when you slow, you are allowing the sensor to pick up on the colder water just inches below the surface

try this
http://store.humminbird.cust.shopatron.com/media/document/M_531521-1_F.pdf
Sounds like you need to set it to fish and turn the sensitivity down.

If you go to Humminbirds Website
and click on the Support Tab on your units page, it will give you the option to download the user manual to your computer.

Hope this helps.

It's a difficult one to find, but Humminbird should have one. Contact them by clicking here and filling out the request.

Hi!
If the sounder works in deeper water then try changing the unit to fresh water instead of salt water (or vise-versa). You'll need to switch to advanced settings first (in the setup menu tab), then switch to the afformentioned salt or fresh water (in the sonar menu tab).
Alternatively, switch back to factory defaults as these settings are made to work "right out of the box".
Best of luck!
Mike

according to the manual... 10-20 VDC

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