Where is speedometer intake on a mercury outboard

The water forces the air in the tube to compress and moves the needle to show your speed. Most modern boats make use of a pitot tube to measure speed. The small triangle shaped mechanism sticks out of the boat and takes in water as the vehicle moves through the water surface. The pressure difference causes the speedometer needle to move, indicating changes in speed. How accurate is a boat speedometer? Boat speedometers are notoriously known for being inaccurate. Since it works primarily on water pressure, if any foreign material gets inside the Pitot tube, it will register an incorrect speed.

At lower speeds, the boat's speedometer is quite accurate. How do you mount a boat speedometer pitot? Find a place on the transom to mount the pitot tube. It should be well clear of strakes, trim tabs, rudders and propellers, and the tip of the pitot should extend at least 2 inches below the hull. Screw the pitot bracket to the transom with the pitot pointing straight down. Where is speedometer intake on a Mercury outboard? Your outboard has a water pressure speedometer located on the lower unit of your motor.

Follow the tube to the back of the boat. Unscrew it out of the pitat pick-up or lower unit and attach it to an air compressor.

Gently blow air through the tube. The needle on your gauge should move. If it doesn't, you will need to buy a new gauge. Use the air compressor to dislodge debris from the tube by setting it to blow air with a little more pressure.

If you cannot remove it, you can purchase a new tub and simply screw or insert it into your pitat pick up or lower unit. From time to time, this feature will get clogged with debris, weeds and gravel. This problem is easy to fix with one simple tool Locate the tiny hole on the leading edge of your lower unit.

This is where water is forced in and runs to the back of the speedometer, giving you your reading. Using the fluted end of the drill bit, slowly slide the bit back and forth to remove any debris. This method should take care of any obstructions that may be causing your outboard speedometer reading to be off. Watch the video below for more information.

Safe boating is the responsibility of everyone on the water, and it starts with making sure you have enough life jackets of the proper type and size for everyone on board. The best Step 1 Wipe down the cowl with a damp cloth to remove water spots and dirt. Step 2 Using a clean, dry cloth, continue to wipe the cowl removing any dampness. Step 3 Using a clean, dry cloth, apply Cowl Read More.