Outboard Motor Size Mercury Outboard Spark Plug Chart
If you own a boat with an outboard motor, you need to know the right size of the motor for your boat. The size of the motor determines how well the boat will perform on the water, and it can also affect fuel efficiency. In addition, you need to know which spark plug to use in your Mercury outboard motor. This article will provide you with a detailed chart to help you determine the right size motor and spark plug for your boat.
Outboard Motor Size
The size of the outboard motor is measured in horsepower (HP). The higher the horsepower, the more powerful the motor. When choosing the size of the motor, you need to consider the size and weight of your boat. A larger boat will require a larger motor to propel it efficiently. Also, the type of boating you do will affect the size of the motor you need. If you are using your boat for fishing or leisurely cruising, a smaller motor may be sufficient. However, if you plan to do water sports or use your boat for commercial purposes, you will need a larger motor.
Here is a chart to help you determine the right size of the outboard motor for your boat:
| Boat Size | Motor Size (HP) |
|---|---|
| Less than 14 feet | 2.5 to 5 HP |
| 14 to 16 feet | 5 to 25 HP |
| 16 to 18 feet | 25 to 75 HP |
| 18 to 20 feet | 75 to 150 HP |
| 20 to 25 feet | 150 to 300 HP |
Mercury Outboard Spark Plug Chart
Once you have determined the size of the motor, you need to choose the right spark plug for your Mercury outboard motor. The spark plug is responsible for igniting the fuel in the engine, and it is essential for the motor to function properly. Using the wrong spark plug can cause poor performance, decreased fuel efficiency, and even damage to the motor.
Here is a chart to help you determine the right spark plug for your Mercury outboard motor:
| Motor Model | Spark Plug |
|---|---|
| 2.5 HP | NGK BP4HS-10 or Champion L78V |
| 3.5 HP | NGK BP4HS-10 or Champion L78V |
| 4 HP | NGK BP4HS-10 or Champion L78V |
| 5 HP | NGK BP4HS-10 or Champion L78V |
| 6 HP | NGK BP4HS-10 or Champion L78V |
| 8 HP | NGK BPR6HS or Champion L78YC |
| 9.9 HP | NGK BPR6HS or Champion L78YC |
| 15 HP | NGK BPR6HS or Champion L78YC |
| 20 HP | NGK BPR6HS or Champion L78YC |
| 25 HP | NGK BPR6HS or Champion L78YC |
| 30 HP | NGK BPR6HS or Champion L78YC |
| 40 HP | NGK BPR6HS or Champion L78YC |
| 50 HP | NGK BPR6HS or Champion L78YC |
| 60 HP | NGK BPR6HS or Champion L78YC |
| 75 HP | NGK BPR6HS or Champion L78YC |
| 90 HP | NGK BPR6HS or Champion L78YC |
| 115 HP | NGK BPR6HS or Champion L78YC |
| 135 HP | NGK BPR6HS or Champion L78YC |
| 150 HP | NGK BPR6HS or Champion L78YC |
| 175 HP | NGK BPR6HS or Champion L78YC |
| 200 HP | NGK BPR6HS or Champion L78YC |
| 225 HP | NGK BPR6HS or Champion L78YC |
| 250 HP | NGK BPR6HS or Champion L78YC |
| 300 HP | NGK BPR6HS or Champion L78YC |
Conclusion
Choosing the right size of the outboard motor and spark plug for your Mercury outboard motor is essential for the performance and longevity of your motor. Use the charts provided in this article to help you make the right choices for your boating needs. Always refer to your owner's manual for specific recommendations and maintenance instructions.