Outboard Motor Impellor replacement

What is the recommended frequency for checking the water pump impeller?

• Every 6 months

• Every season

• Every year

• Every 5 years

What is the first step to replacing the water pump impeller?

• Remove the spark plugs

• Remove the fuel filter

• Remove the propeller

• Remove the lower unit

How can you tell if the water pump impeller is in need of replacement?

• It will be noisy

• It will be loose

• It will have grooves, scarring and permanent deformation

• It will be discolored

Which parts need to be replaced during a typical water pump replacement?

• Top gasket, Woodruff key, cup

• Bottom and or top gaskets, impeller cup, impeller

• Base plate, cup

• Top gasket, impeller, Woodruff key

Does replacing the water pump impeller affect the outboard warranty?

• It depends on the boat model

• Yes, it voids the warranty

• It depends on the age of the impeller

• No, it does not affect the warranty if carried out at a recognised agent.

What should be applied to the fasteners when taking them out during the replacement?

• Marine grade grease

• WD-40

• Engine oil

• Silicone sealant

What should be checked after starting the boat to ensure the water pump replacement was successful?

• Fuel level

• Oil level

• Water pump housing

• Water flow

What should be checked before launching the boat after replacing the water pump impeller?

• Spark plugs

• Propeller

• Water flow and Gear shift rod

• Fuel filter

What is the purpose of applying marine grade grease to the fasteners?

• To increase speed

• To reduce noise

• To improve fuel efficiency

• To prevent corrosion and seized bolts

What is the role of the Woodruff key in the water pump replacement?

• To lubricate the pump

• To secure the impeller to the drive shaft

• To adjust the water flow

• To seal the housing