How high should my outboard motor be mounted?

How far below the transom should the prop be?

If you have a short shaft motor, the top most part of the transom and the lower most part of the boat should be about 15 to 16 inches. For a long shaft, I think 20 to 21 inches is correct. Some mornings it just doesn’t seem worth it to gnaw through the leather straps.

What happens when outboard is mounted too high?

Too high usually results in low water pressure, prop letting go in turns, or lack of bow lift are usually the telltale signs. Sometimes porpoising is caused by too much bow lift and dropping the motor will give it more bite and make it worse.

Is it bad to run an outboard engine at full throttle?

Does this mean an engine should never run at wide-open throttle (WOT)? Absolutely not. Modern engines are designed to handle WOT. Also, during break-in going to WOT, as prescribed by the owner’s manual, is necessary to properly seat the pistons’ rings.

How deep in the water should my outboard be?

The shaft length you’ll need to keep the motor head submerged at the appropriate depth is at least 35 inches. If you frequently fish or boat in rough waters, you may even want your motor a little bit deeper.

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Should cavitation plate be underwater?

Basically, the cavitation plate must always be in the water when the boat is running. It should be located right at that water level. The rule of thumb should be one inch above the boat’s hull for every 12 inches back.

What causes prop blowout?

Blowout occurs when something causes air/water mixture in the region of the propeller to become sufficiently disturbed that the propeller cannot continue working in “clean” water, but is rather, trying to work through a very soft or light mixture (or a relative vacuum).

Should I raise or lower my outboard motor?

Should I leave my engine up or down? Simply put, if you are leaving the boat in the water, leave it in the up position to avoid growth. If you are leaving it out of the water, trim it down to drain the water and protect the Power Tilt and Trim seals from the sun.

How do you increase transom height?

One non-invasive way of raising the transom on an aluminum boat is to create a “lift” — a bracket that fits over the transom — to increase the motor’s height. The completed bracket forms a channel, and the top of the channel holds the top of the outboard bracket a few inches above the transom of the boat.

Can you put a new motor on an old boat?

On an older boat, it’s just smart to replace these items. Old instrumentation may not work with a new motor. Old controls may not work with a new engine. If steering components are worn or just old, it’s smart to replace them with new parts.

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