Knowing how to remove a boat propeller is a simple project and everyone who owns a boat should know how to do it right. Harmonic knockers, screw-type pullers, and other tools can be used to remove a propeller. To make a jammed prop give, a smoke wrench, also known as a torch, must be applied to the hub. A prop, on the other hand, can cling to its shaft with the tenacity of a barnacle to a piling on occasion. All individuals who need to remove a propeller may find the following step by step advice useful.

Step 1: Trip The Kill Switch On The Propeller

It’s always a good idea to trip the boat’s kill switch before you start working on the propeller. As an added precaution, you can put the gear in neutral. To do the propeller installation as safely as possible it’s important not to skip this step because you never know what might happen when the propeller is still connected to a power source. 

Step 2: Remove The Cotter Pin

Carefully remove the cotter pin using needle tip pliers and place it aside. You need to do this step very carefully and precisely because the cotter pin is quite delicate and may get damaged easily. 

Step 3: Keep The Nut On

Remove the cotter pin and loosen both nuts with a piece of wood to keep the prop from spinning. Remove the half-height nut entirely and replace it with the full-height nut on the shaft’s tail, with the threads engaged. Removing a prop requires some force to be applied and keeping the nut on will protect the prop from fall damage or hurting you when it bursts loose.

Step 4: Grab Firmly And Pull

Grasp the propeller by the base of two blades with both hands. Pull in a straight line. Make sure you grasp it extremely firmly when pulling because you don’t want it to slip off your hands as it may hurt you. Keep an eye out for the shaft key, since it frequently slips out at this stage. Install the new prop after packing up the old one and sending it off for reconditioning. There’s a high chance that this easy strategy won’t work right away and you may need to apply different techniques to remove the boat propeller. 

Technique 1: Screw The Prop Knocker

To provide clearance, you may need to tilt the rudder slightly. Remove the nut and screw the harmonic puller, also known as a prop knocker, onto the shaft. Hand-tighten the prop knocker, then rap it four or five times with a hammer. Rap the prop a couple of times too. The prop should have come loose from the shaft taper as a result of the vibration. Grasp the prop, then take out the knocker and the prop. If knocking repeatedly fails, try another approach.

Technique 2: Prop Puller

A prop puller is the most popular tool in repair shops, however, there are numerous variants on the idea. All employ the inclined plane, a basic mechanism that exerts relentless force in a regulated manner between the forward side of the propeller hub and the tail end of the prop shaft — here in the form of screw threads. Because the prop will come free if the large nut isn’t threaded onto the shaft’s end, it’s a good idea to thread it on.

Why You May Need To Remove Your Boat Propeller

Your steering may feel unsteady, which is an indicator that your propeller is damaged. If this occurs, inspect the propeller to ensure it is not damaged or dented. Another thing that may prompt you to change your propeller is if your fishing line becomes twisted around the propeller. A common reason for prop removal is if you collided with wood, rock, or sand.

You may also need to change your propeller if you notice that your fuel consumption isn’t as low as it once was- the prop may be damaged. You may want to remove your boat propeller if you want to move quicker and getting a new propeller with a better design for speed will require you to change your old one. Propellers are made in a variety of ways to suit various speeds and requirements. You should remove the propeller at least once or twice a year and grease the shaft, washers, and spacers to help prevent the propeller from seizing.

Following the steps and techniques we mentioned will surely help you learn how to remove a boat propeller but make sure you are doing everything slowly and carefully. It’s a delicate job that requires patience and carefully applied force. If you are not careful you may damage your propeller, engine or even hurt yourself in the process.