Don’t let a bent, broken or spun prop ruin your day on the water. Carry a spare prop, along with a floating prop wrench of the correct size for your prop nut. If you can get into a shallow, calm area, anchor your boat so that you can change the prop while standing in the water. Note: Disconnect the spark plugs leads before attempting to loosen the prop nut, to avoid accidentally starting the engine.
If you attempt to change the prop while onboard, drape a towel or T-shirt over a landing net and have another person hold it under the lower unit to catch any parts, such as washers, cotter pins, castle nuts or bushings, that may fall off. Also, keep careful track of the order in which all these parts fit back together when you install the new prop. In fact, you might consider taking a photo of the parts laid out in the proper order, or make a sketch to guide you.
Note: If you frequently boat in rocky waters, consider a Piranha composite propeller. Piranha props features removable blades, allowing you to change a damaged blade in less than a minute. The spare blades cost about $20 each, and take up less room that a full propeller.
Watch a video of Piranha Propellers featuring Larry Kindberg of AccuTech Propellers by CLICKING HERE.