Speedometer problem on 2017 Searay SPX 21

I recently took delivery of a new SPX 21 and the speedometer stopped working. The "delivery captain" told me that it is a common problem because of weeds getting into the sensor that measures speed. I live and store my boat on a Central Florida lake where floating weeds are pretty common so his explanation makes sense.

However, even though I don't have much use for a speedometer on a boat especially when the tach works I would still like to have all the instruments working. Can anyone tell me where the sensor/tube is located on SPX21 with an inboard motor? If it is true that it gets clogged I would like to clean it out occasionally to prevent it from becoming permanently gummed up. Thanks!

Do you have an Alpha drive? If so there is a small hole on the leading edge of the outdrive. It can get clogged use a small price of wire or a plastic wire tie to clear it.

Leading edge of the leg

proper size drill bit, rotated by hand will draw the crap that's blocking it out with it

If this is going to be a perpetual problem I'd suggest a water proof case for your phone and a cheapo speedometer app.

Though if I spent the cash for a brand new boat I'm not sure how I'd feel about weeds consistently defeating the speedo. Weeds in water are not new problems...

Thanks for all the responses! I'll take a look and see if I can clear the blockage but to be honest it may not be worth the hassle. My boat stays on a lift in my boathouse so access to the prop area under the swim platform is not very convenient as my boathouse sits in about 9' of water. If I had to trailer my boat it probably would not be a big deal to clear that area when I took it out of the water but with my setup I don't think I will bother with it more than once.