Question> 20004 Yamaha 2 stroke 60 hp

[Jim Travis]

I have lost 5 mph speed at full throttle. My plugs are plugs seem to be covered with oil and some carbon deposits on the rim . The motor is equipped with an automatic oil injection system. Can the injection system be delivering to much oil to the fuel mix. If So how can this be corrected. I have noticed I am using more oil than usual.

[99yam40]

Follow the steps in the manual for your motor to adjust the oil pump link and test.