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

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

• 500

• 1000

• 100

In most cases, regular scheduled maintenance____ 

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

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

• pays off in increased engine life and greater owner satisfaction 

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

Anodes are necessary in freshwater applications. 

• True

• False

When should you INSPECT the clamp bracket anode on a Yamaha outboard? 

• Every year or 100 hours (all models) 

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

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

• After the first 10 hours, then every 100 hours 

What is the recommended normal operating hours for F150LB between lower unit oil changes? 

• 10 hours  

• 75 hours 

• 100 hours 

• 200 hours 

Anodes are replaced when they are ________ percent gone. 

• 25% 

• 35% 

• 40% 

• 50% 

You should only flush the outboard when it has been in saltwater. 

• True

• False

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

• True

• False

What is the recommended interval for changing the engine oil on an F150LB? 

• Every 20 hours of run time 

• Every 50 hours of run time 

• Every 100 hours of run time 

• Every 500 hours of run time 

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

• continuous WOT operation carrying heavy loads 

• average cruising speeds of 5500 – 6000 rpm 

• speed variations, adequate warm-up, light loads 

• all are correct