Yamaha Introduction To Outboard Systems Practice Test

These questions are part of the practice quiz. Start practicing

• A mixture of metals is called what?
• Which term denotes the earth as a common return path and reference potential?
• Which tool is described as a tool with a heavy head mounted to a handle?
• Which of the following is NOT listed as a possible cause of a cooling system fault code in EFI Yamaha?
• What is a typical sign of fuel starvation in an EFI outboard?
• Which measuring instrument is used to measure the outside diameter of an object?
• Which device is used to grip and hold large, heavy objects in place?
• Which component contains and houses the trim/tilt systems for the outboard motor?
• What term refers to the front of the boat?
• Which action should be performed to safely disconnect fuel lines?
• Which observation confirms the cooling telltale indicates the water pump is circulating after start?
• Which component contains the gears and engagement mechanisms for forward, reverse, and neutral?
• Which tool has small pinchers with a jaw used for bending and gripping?
• To diagnose a misfire on a Yamaha EFI outboard, which checks should be performed?
• Which trailer component is used to attach the trailer to the tow vehicle's hitch?
• A flow of electricity is known as what?
• Luminous intensity is measured in which unit?
• Which item is part of the basic preventive maintenance that specifically addresses the fuel system?
• Which tool is used to remove O-rings, seals, or recessed objects?
• What is the heavy duty cover that goes over the powerhead?
• Which term best denotes the meter as a unit of length?
• What component transfers motion from the powerhead to the propeller?
• What is the role of high-pressure fuel injectors in a Yamaha EFI system?
• What measurement does a dial gauge quantify?
• Which term refers to the right side of the vessel when facing toward the bow?
• What is the vertical portion of the stern where an outboard is mounted?
• How do you verify the charging system is functioning correctly?
• Why is a fuel filter/water separator important on Yamaha outboards?
• Which instrument is used to measure the outside diameter of an object?
• What is the primary function of the water pump impeller in an outboard cooling system?
• What is the primary purpose of the cooling system in Yamaha outboards as described?
• Which hull type is known for a V-shaped bottom designed for cutting through waves?
• Name two sensors that influence EFI fuel delivery in a Yamaha engine.
• Which component is responsible for moving water to generate thrust?
• Which light indicates the starboard side (green)?
• What is the SI unit used for Length?
• Which component will function as a transformer in the ignition system?
• Which action helps reduce fire risk when working around fuel lines?
• Which instrument is used to measure inside diameters, outside diameters, and depths with precision?
• Which component helps align the boat on the trailer during loading?
• Which component is primarily responsible for adjusting fueling and timing in EFI Yamaha engines during altitude changes?
• What is the effect of a clogged air filter on carbureted or early EFI sections?
• Which step should come immediately after relieving system pressure in the EFI fuel system maintenance sequence?
• Which term is the trailer component that supports the weight of the boat?
• Why is using Yamaha-approved parts recommended?
• Which tool has small pinchers with a jaw used for bending and gripping?
• Which condition most directly indicates a coolant intrusion into engine oil?
• In a cylinder drop test to locate a misfiring cylinder, which observation identifies the misfiring cylinder?
• What is a common consequence of a weak battery during starting?
• Which gripping device is used to hold large, heavy objects in place?
• Which part of the trailer supports the weight of the boat?
• What safety feature stops the engine if the operator falls away from the controls?
• Which instrument indicates engine RPM?
• Electric potential or potential difference expressed in volts is called what?
• Which component is used to connect the trailer to a towing vehicle?
• How does a Yamaha EFI system determine the amount of fuel to inject?
• What is the primary reason to keep battery terminals clean and tight?
• Having a fire extinguisher ready while working on fuel lines mitigates risk of what?
• Which hull type would typically be described as a multi-hull arrangement?
• Which type of gear oil should be used in the gearcase?
• What is the primary function of the level fill plug in gearcase oil maintenance?
• The unit symbol for thermodynamic temperature is what?
• What component provides the electrical signal to trigger the ignition event?
• What information does a tachometer provide to the operator and technician?
• How do you check for a poor ground connection in the electrical system?
• Which term describes the rear vertical surface of the boat where the motor is mounted?
• EFI in Yamaha outboards is used in which engine configurations?
• Which statement about ignition timing adjustments in EFI engines is true?
• During a cylinder drop test, how is the misfiring cylinder identified?
• Which describes a current that reverses direction regularly?
• Which tool is described as having a heavy head mounted to a handle?
• Which hull type uses two or more hulls for stability and space?
• What is the SI unit used for Mass?
• What device is used to pull the boat onto the trailer?
• Which type of electric current flows in only one direction?
• Which term refers to the left side of the vessel when facing forward toward the bow?
• Which instrument measures engine RPM?
• Which component functions as an electronic switch in the ignition system and turns off the current through the primary winding when activated by the pulser coil?
• Which diagnostic test is used to identify the specific cylinder that is misfiring?
• Which statement about the cooling water jacket is true?
• Which symptom would suggest a vacuum leak in the intake system?
• Which steering system uses a steel cable to transfer rotational movement from the helm to the outboard's mounting steering arm?
• How is gearcase lubrication typically maintained in Yamaha outboards?
• What connects the vehicle to the trailer?
• Which component is directly responsible for delivering the voltage from the power source to the ignition control circuitry?
• Which sensor provides intake manifold pressure data to the ECU in most Yamaha EFI engines?
• How is the correct gearcase oil level verified on most Yamaha outboards?
• Which color indicates the port side on navigation lights?
• Which term best describes electric potential difference measured in volts?
• What is the proper sequence for safely performing maintenance on an EFI outboard's fuel system?
• In a circuit, when the load is bypassed and there is no resistance, what is this condition called?
• Which term describes the part of the outboard that makes up the motor itself?
• Which trailer component is used to raise and lower the trailer to facilitate loading or launching?
• Which term describes the lengthwise axis along the hull from bow to stern?
• Which trailer component keeps the boat centered on the trailer during loading?
• Which option correctly identifies the SI unit for electric current?
• What is the upper edge of the hull around its perimeter?
• Which term refers to the stern area of a boat, where the engine is mounted?
• Which device supports the front of the trailer when not attached to a tow vehicle?
• In many TCI units, two transistors are used. One will allow current to flow through the primary winding. When the second transistor is activated by the pulser coil, it will turn off the primary transistor. Which component is this description referring to?
• What is the SI unit used for Time?
• Why should fittings and clamps be torqued to the manufacturer’s spec on fuel lines?
• Which instrument converts the out-of-round motion of a shaft into a direct needle reading?
• Which term is the trailer component that supports the weight of the boat?
• Which term refers to the left side of the vessel when facing toward the bow?
• Purging air from the fuel rail after replacing injectors is necessary to prevent what?
• How does the ECU adjust ignition timing in EFI engines as RPM increases?
• Which device converts AC to DC voltage?
• Which option is not listed as a base SI measurement in the material?
• What is the typical service interval for changing engine oil on a Yamaha four-stroke?
• Which term is the main body of the boat designed to displace water?
• The unit for luminous intensity is called what?
• The thermodynamic temperature is measured in which unit?
• How does Yamaha account for altitude changes in EFI tuning?
• What is the function of the cooling water jacket around the cylinder and head?
• Which term is defined as the minimum vertical distance from the water surface to the Gunwale?
• Which side is the Starboard when facing forward toward the bow?
• Which term refers to the physical structure of the boat that displaces water?
• What is the trim/tilt system used for on Yamaha outboards?
• What is the small compact unit that contains the control circuit for the ignition system?
• The amount of a substance is measured in which quantity?
• What precautions are recommended for cold-weather starts on Yamaha outboards?
• What is the front portion of a trailer called?
• Which term is the centerline of the boat's hull, running from bow to stern?
• What is a telltale sign of a failed water pump impeller besides poor cooling?
• Which data sources does the EFI ECU use to meter fuel in Yamaha outboards?
• Which tool is used for gripping and turning objects?
• What does EFI stand for in Yamaha outboard systems?
• Which steering system replaces cables with hydraulic lines and can range from manual to power-assisted models?
• Where is the thermostat typically located in a Yamaha four-stroke cooling system and what does it do?
• When inspecting fuel hose connections, what should be checked?
• Which gasket is shaped like a ring used to seal connections?
• What is the function of the lower unit/gearcase in an outboard?
• How does a clogged fuel filter affect engine performance?
• Which tool is used to remove O-rings, seals, or recessed objects?
• Which component acts as an electronic switch in the ignition system to control current in the primary winding?
• Which of the following would indicate a potential issue when inspecting fuel hose connections?
• What is a common symptom of a failing water pump impeller?
• Which component provides ignition timing control in Yamaha outboards with electronic ignition?
• Which engine configurations are the two main types Yamaha training materials focus on for outboard engines?
• Which component is used to mount, secure, and pivot the outboard, containing trim/tilt systems?
• Which action confirms the alternator is charging at the battery?
• Which type of electric current changes direction periodically?
• What is the purpose of the throttle position sensor in some Yamaha outboards?
• Why is a clean, tight ground connection between the battery and the engine block important?
• Which component converts rotational motion into forward thrust?
• What is a primary benefit of using Yamaha-approved parts?
• What is the common SI unit abbreviation for mass?
• What does milky oil indicate in the crankcase?
• How can you detect a vacuum leak in the intake system?
• Why is propeller inspection part of routine maintenance on an outboard?
• What is the widest part of a boat called?
• This switch is used to allow the power source to connect to the TCI unit
• What is the SI unit used for Electric Current?
• How can you confirm the cooling system is free of air locks?
• What might milky oil indicate in a four-stroke Yamaha engine?
• Which hull type has a wide, stable hull, very shallow draft, and is easy to plane, but can ride harshly in rough water due to its flat bottom?
• Why is it important to use the correct spark plug type and gap in Yamaha outboards?
• Which component stores energy and releases it to create high voltage in the ignition system?
• What is the initial step to check the charging system when the engine is off?
• Which term refers to the opposition to current flow in a conductor?
• What is the purpose of purging air from the fuel system after maintenance on a fuel-injected Yamaha?
• How far is a boat under the waterline?
• What is the purpose of using the correct spark plug type and gap in Yamaha outboards?
• Which device converts AC voltage to DC voltage?
• What should you verify about the cooling telltale after starting the engine?
• Which hull type is round in cross-section and often described as Round Bottom Hull?
• Which component of the charging system includes the flywheel and lighting coil?
• Which statement best describes the core steps of basic preventive maintenance for Yamaha outboards?
• Which term is described as a fastener used for attaching rope?
• Which unit delivers fuel into the engine as commanded by the ECU?
• Which component of the charging system corresponds to the magnetic generator that uses a flywheel and lighting coil?
• What is the function of a vent or anti-siphon valve in Yamaha fuel tanks?
• Which device is used to pull the boat onto the trailer?
• Which provides a secondary attachment for safety between vehicle and trailer?
• Which component supports the entire hull of the boat, often wooden and carpeted?
• What is the back of the boat called?
• The term for a metal blend is which of the following?
• Which light is visible 360 degrees around the vessel?
• What tests would you perform to verify the starting/charging circuit is healthy?