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As requested by another forum member. Like most salt water used engines, the pitot tube opening in the LU is often clogged with salt.
Below is what I came up with to keep it clean. The rubber hose with the "V" is put over the pitot hole in the LU and fresh water is pumped (garden hose) in. What goes in will mostly come out.
To ensure ALL the water (and any salt water) is out of the entire system, I tee'ed in a regular shrader valve up inside the console into the Yamaha speedometer hose (to the speedometer).
I then simply hook up my 12 volt mini compressor to the valve and it pumps ALL the water out of the entire system.
Note, it does NOT have enough pressure to damage the speedometer. (should you turn on the key to watch the display, it usually reads about 17 MPH with the pump on and the pitot tube OPEN).
You'll be surprised how much water is laying in the main line (in the hull) when first cleaning out the line..
Below is what I came up with to keep it clean. The rubber hose with the "V" is put over the pitot hole in the LU and fresh water is pumped (garden hose) in. What goes in will mostly come out.
To ensure ALL the water (and any salt water) is out of the entire system, I tee'ed in a regular shrader valve up inside the console into the Yamaha speedometer hose (to the speedometer).
I then simply hook up my 12 volt mini compressor to the valve and it pumps ALL the water out of the entire system.
Note, it does NOT have enough pressure to damage the speedometer. (should you turn on the key to watch the display, it usually reads about 17 MPH with the pump on and the pitot tube OPEN).
You'll be surprised how much water is laying in the main line (in the hull) when first cleaning out the line..
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