How to Mount an Outboard – Set Height Correctly and Rig – Boston Whaler 13 Restoration Part 19

In this video, I demonstrate how to mount a Yamaha Outboard and CMC Jack Plate for my Boston Whaler 13 Restoration project. The video covers important details such as correct mounting height in relation to the cavitation plate and the process of rigging the Outboard. Despite facing challenges during temporary mounting due to heat, the video offers a step-by-step guide on drilling the transom, raising the engine, and connecting power cables to achieve optimal performance.

Throughout the process of mounting and securing the engine, I emphasized the importance of correct height to ensure optimal performance on the water. By detailing the steps involved, including drilling holes in the transom, connecting throttle and shift cables, and testing the motor beforehand, the video provides a comprehensive guide to properly rigging an outboard. The use of affiliate links to products used and the emphasis on correct mounting height make this video a valuable resource for anyone looking to embark on a similar project.


As I delve into the process of mounting and rigging an outboard motor, it is essential to understand the background of this project and the significance of correct mounting height. Proper installation of an outboard motor is crucial for optimal performance and safety on the water.

Project background

In this restoration project, I am mounting a Yamaha Outboard using a CMC Jack Plate / Riser Plate. The focus is on achieving the correct mounting height relative to the cavitation plate for the outboard motor. This step is vital for ensuring the outboard functions efficiently and effectively during operation. Having the engine mounted on a backplate makes this a bit more challenging. The mounting plate sets the engine back further from the transom. The further the engine is set back, the higher it can be mounted. This is because teh water coming off the back of the transom rises as it travels back towards the engine. This allows for a higher engine mounting height

Importance of correct mounting height

The correct mounting height plays a critical role in the performance of the outboard motor. It affects the way the motor interacts with the water, impacting speed, fuel efficiency, handling, and overall functionality. By setting the mounting height correctly, I aim to optimize the outboard’s performance and enhance the overall boating experience.

Gathering necessary tools and materials

Before diving into the mounting and rigging process, gathering the necessary tools and materials is key to a smooth operation. Additionally, setting up the work area properly ensures a safe and organized environment for the installation process. To begin the project, I made sure to gather all the tools and materials required for mounting the outboard motor. This includes bolts, lock nuts, cables, power tools, and any additional components needed for the installation process. Having everything on hand minimizes interruptions and helps streamline the workflow.

Mounting the Outboard

Determining correct mounting height

The correct mounting height is crucial for the outboard motor’s performance on the water. By aligning the outboard motor relative to the cavitation plate, I aimed to ensure the propeller operates efficiently and avoids cavitation, which can hinder the motor’s effectiveness. This is especially true since this particular motor is a 20 inch motor. The transom on this classic whaler 13 is a 15 inch transom. The CMC Jack Plate / Riser Plate provides the necessary flexibility to adjust the mounting height of the outboard motor. This component allows for precise positioning to achieve the desired performance levels. By incorporating the CMC Jack Plate / Riser Plate into the installation process, I could fine-tune the mounting height for optimal operation.

Drilling Holes To Mount Outboard
Drilling Holes To Mount Outboard
Bolts Holding Riser Plate On
Bolts Holding Riser Plate On
Raising the Engine Up
Raising the Engine Up
Checking Height Against Hull
Checking Height Against Hull

Rigging the Outboard

Once the outboard motor is securely mounted, the next step involves rigging the motor with controller cables, power cables, throttle, and shift cables. Proper rigging ensures that the outboard motor functions smoothly and responds accurately to control inputs. Routing the controller cables is a crucial part of the rigging process. By carefully guiding the cables through the appropriate channels and connections, I could ensure that the control mechanisms operate efficiently and reliably.

Connecting Power Throttle and Shifter Cables

Establishing a secure connection for the power cables is essential for powering the outboard motor. By following the manufacturer’s guidelines and best practices, I could safely link the power source to the motor for seamless operation. The throttle and shift cables play a vital role in controlling the outboard motor’s speed and gear selection. By connecting these cables correctly and adjusting them to the proper settings, I aimed to optimize the motor’s responsiveness and performance on the water.

703 Controller and Cables
703 Controller and Cables
Installing the Throttle and Shift Cable
Installing the Throttle and Shift Cable

Securing the Engine

Securing the outboard engine to the transom is a critical step in the installation process. By drilling transom bolt holes, securing the engine with bolts and lock nuts, and understanding engine height relative to water level, I ensured the outboard motor was safely and securely attached for operation. In this case, drilling transom bolt holes was necessary to secure the CMC mounting plates to the transom. By carefully positioning and drilling the holes, I could create a stable foundation for mounting the plate and engine securely to the boat.

Securing the engine with bolts and lock nuts

Using bolts and lock nuts to secure the engine to the transom is essential for preventing movement and ensuring stability during operation. By tightening the bolts and lock nuts according to the manufacturer’s specifications, I could guarantee a secure attachment for the outboard motor.

Understanding engine height and water level

Understanding the relationship between engine height and water level is crucial for optimal performance. By aligning the outboard motor at the correct height relative to the waterline, I aimed to enhance the motor’s efficiency and prevent issues such as cavitation or poor handling.

Final checks before launching

Before launching the boat, conducting final checks is essential to ensure everything is in order. By inspecting the outboard motor, verifying all connections and controls, and confirming proper installation, I could confidently proceed with launching the boat and enjoying the restored Boston Whaler 13.

Importance of Proper Rigging

The significance of proper rigging cannot be overstated when mounting an outboard motor. Effects of improper rigging on performance and the benefits of rigging power and control cables correctly are essential considerations for optimizing the outboard motor’s functionality. Improper rigging can have detrimental effects on the outboard motor’s performance. Issues such as poor responsiveness, inefficient operation, and potential safety concerns can arise from improperly rigged power and control cables. By emphasizing the importance of correct rigging, I aimed to mitigate these risks and enhance the motor’s performance.

Benefits of rigging power and control cables correctly

Properly rigging power and control cables is key to ensuring smooth operation and accurate control of the outboard motor. By aligning cables correctly, adjusting settings to manufacturer specifications, and conducting thorough checks, I could guarantee that the outboard motor performed optimally on the water.


In conclusion, mounting an outboard motor correctly and rigging it with precision are essential steps in the restoration process. By emphasizing the importance of correct mounting height, addressing challenges faced during installation, and highlighting the significance of proper rigging, I aimed to enhance the performance and reliability of the outboard motor for the Boston Whaler 13 Restoration project.

Emphasizing the importance of correct outboard mounting and rigging

The success of the outboard motor installation relies on setting the correct mounting height, securing the engine effectively, and rigging power and control cables accurately. By prioritizing these aspects, I could ensure that the outboard motor operated optimally, delivering enhanced performance and efficiency on the water.

Preview of upcoming videos in the restoration series

As the Boston Whaler 13 Restoration project nears completion, there are additional videos planned to cover rigging the steering and mounting side rails. These future installments will provide further insights into the restoration process and showcase the attention to detail and precision required for a successful project. Stay tuned for more updates on the restoration journey.

In this video, I will mount a Yamaha Outboard and CMC Jack Plate/Riser Plate. I will explain the proper outboard mounting height (relative to the cavitation plate) and show how to rig the Outboard. I am nearing completion of the Boston Whaler 13 Restoration project. I hope to have it in the water very soon!

How to mount an outboard, set height correctly, and rig – Boston Whaler 13 Restoration Part 19.

Here are some affiliate links to the products I used for mounting this Outboard Motor: