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How to Disassemble an Outboard Motor

There are lots of reasons why people would need to disassemble an outboard motor including problem diagnosis, maintenance and repair. You will also need to go through this process if you are rebuilding an old outboard motor. The process is extremely simple if you know how to properly use screwdrivers and wrenches. If your outboard motor is battered or damaged outboard, it will require a lot more concentration and improvisation.


1. Put on the leather gloves. They will keep your hands clean while protecting you from the hazardous elements of the motor.

2. Unscrew or unbolt the case. Lift it off.

3. Pull off the spark plug and remove all wires from the motor itself. Unscrew the control panel and carefully remove it from the motor.

4. Unbolt or unscrew your cylinder(s) and remove it. Remove the piston from the cylinder.

5. Lift and remove the carburetor from the motor. Most motors don't have any screws that need loosening at this point.

6. Unbolt the propeller and remove it from the drive shaft. Unscrew the bottom of the drive shaft casing and let it drop off. Carefully pull out the drive shaft and set it aside.

7. Unscrew all screws on the water pump and take it apart. This process will vary from motor to motor.