boat motor tune up cost
On average, a basic outboard motor tune up should be between $80 and $650. Generally, the larger the motor and the more horsepower it has, the more you are going to have to pay. Smaller 2, 3 and 4 cylinder tune ups are often around $65 to $150, while a 15HP motor can cost upwards of $200. 6 and 8 cylinders can cost $200 to $400.