Portable Homework 2

The maintenance cycle in the charts assumes ______ hours per year usage.

• A. Charts only recommend service. The interval is up to the customer.

• B. 500

• C. 1000

• D. 100

In most cases, regular scheduled maintenance____

• A. is not necessary if the customer uses his boat a lot

• B. is not necessary if customer uses the engine per the manufacturer’s guidelines

• C. pays off in increased engine life and greater owner satisfaction

• D. should be performed at 20-hour intervals for the life of the engine

Anodes are NOT necessary in freshwater applications.

• A. True

• B. False

When should you REPLACE the anodes on a Yamaha outboard?

• A. Every year or 100 hours (all models)

• B. Every five years or 500 hours (freshwater models only)

• C. When only 1/2 remains (50% depleted)

• D. After the first 10 hours, then every 100 hours

What is the recommended normal operating hours for F9.9LEB between lower unit oil changes?

• A. 10 hours

• B. 75 hours

• C. 100 hours

• D. 200 hours

Anodes are replaced when they are ________ percent gone.

• A. 25%

• B. 35%

• C. 40%

• D. 50%

The maintenance charts in the service manual always match the charts found in the owner’s manual.

• A. True

• B. False

What is the recommended interval for changing the engine oil on a T9.9?

• A. Every 20 hours of run time

• B. Every 50 hours of run time

• C. Every 100 hours of run time

• D. Every 500 hours of run time

What does the service manual recommend for the oil change interval for an F9.9 after break-in?

What is considered “typical” operating conditions for outboard engines?

• A. continuous WOT operation carrying heavy loads

• B. average cruising speeds of 5500 – 6000 rpm

• C. speed variations, adequate warm-up, light loads

• D. all the above