A Guide to Tohatsu Outboard Propellers

The Tohatsu company manufactures more than a dozen different models of outboard motor.  Propellers designed to work with Tohatsu outboard motors may be manufactured of aluminum or stainless steel. Aluminum is, by far, the more popular variety because aluminum propellers are both lightweight and relatively inexpensive.

Tohatsu outboard propellers are best described in terms of diameter and pitch.  To find the diameter of a propeller, boating enthusiasts should measure from one edge of the blade rotation circle to the opposite edge.  That is, the diameter equals the distance across the entire circle swept out by the movement of the propeller blades.  Tohatsu outboard props come in a variety of diameters, ranging from almost eight inches across to more than 13 inches across.  Depending on the exact propeller selected, rotation will proceed in either a right- or left-handed direction.

The pitch of a propeller is another essential measurement that boating enthusiasts must keep in mind.  Pitch measures how much a propeller will move forward based on one full rotation.  This may sound technical, but in fact, the pitch of a propeller can alter the acceleration and highest speed that a particular motor can achieve.  Larger pitch figures result in a higher top speed but reduce the boat’s ability to accelerate as fast.  Smaller pitch figures tend to have the opposite effect.  Pitch figures on Tohatsu aftermarket propellers can be as low as 4.5 inches or as high as 21 inches.

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