Yamaha Motor University
Yamaha Motor University Exam Questions
and Answers
Question 1
-The Powerhead
-Outboards
-Steering
-Inboard motors
Correct Answer
-is where the motor is located
-combine the motor and drive into a single packaged unit
-can be controlled by remote or direct methods
-are common on large vessels
Question 2
Oil seal is designed to keep ___ in and prevent _____ or dust from coming in from
outside
Correct Answer
oil/water
Question 3
The bracket is used to:
Correct Answer
-attaches the motor to the boat
-it allows for trim and tilt movements
-it allows the motors to pivot which allows steering
-acts as a shock absorber if the lower unit hits an underwater object while the boat
is at speed
Page 1 of 17
, Yamaha Motor University
Question 4
One side of the Circlip has a sharp-edged (90 degrees) corner and other is angled (45
degrees). Install a circle with the ___________ side opposite the direction of force/
Correct Answer
Sharp-edged/ -><-
Question 5
-a touque wrench is used
-a dial gauge is used
-a vernier caliper is used
-a reamer is used
-a pressure gauge can be used-
-a micrometer can be used
Correct Answer
-for tightening a bolt or nut to the specified torque
-to measure the runout or deflection of a shaft or plane
-for measurement of inside, outside diameters and depths
-to finish precision bores of valve stems and other bushings
-to measure intake vauum
-to measure thickness very accurately
Question 6
Identify the different combustion chamber designs
Correct Answer
Hemispherical (2) Wedge (1)
Question 7
During the intake stroke what is the correct order?
Correct Answer
-the intake valve is opened
-the piston moves downward
-a negative pressure is produced in the cylinder
-the air-fuel mixture is taken in
Page 2 of 17
, Yamaha Motor University
Question 8
How many flywheel revolutions are there in the complete four stroke process?
Correct Answer
2
Question 9
Which valve can handle higher heat?
Correct Answer
exhaust valve
Question 10
-remove carbon residue
-guide lubrication oil into the piston through the oil discharge holes on the surface of
the oil ring and piston during its downward travel
-remove oil from the wall surface during the intake process
-provide a seal between the piston and cylinder during the four strokes
-guide lubrication oil into the piston through the oil discharge holes on the surface of
the oil ring and piston during its upward travel
Correct Answer
-compression ring
-oil ring
-oil ring
-compression ring
-oil ring
Question 11
-four stroke engines
-two stroke engines
Correct Answer
-can operate stable at low rpm, idling RPM can be set at a lower value
-cannot operate stable at low rpm, idling RPM must be set to a higher value
Page 3 of 17
Yamaha Motor University Exam Questions
and Answers
Question 1
-The Powerhead
-Outboards
-Steering
-Inboard motors
Correct Answer
-is where the motor is located
-combine the motor and drive into a single packaged unit
-can be controlled by remote or direct methods
-are common on large vessels
Question 2
Oil seal is designed to keep ___ in and prevent _____ or dust from coming in from
outside
Correct Answer
oil/water
Question 3
The bracket is used to:
Correct Answer
-attaches the motor to the boat
-it allows for trim and tilt movements
-it allows the motors to pivot which allows steering
-acts as a shock absorber if the lower unit hits an underwater object while the boat
is at speed
Page 1 of 17
, Yamaha Motor University
Question 4
One side of the Circlip has a sharp-edged (90 degrees) corner and other is angled (45
degrees). Install a circle with the ___________ side opposite the direction of force/
Correct Answer
Sharp-edged/ -><-
Question 5
-a touque wrench is used
-a dial gauge is used
-a vernier caliper is used
-a reamer is used
-a pressure gauge can be used-
-a micrometer can be used
Correct Answer
-for tightening a bolt or nut to the specified torque
-to measure the runout or deflection of a shaft or plane
-for measurement of inside, outside diameters and depths
-to finish precision bores of valve stems and other bushings
-to measure intake vauum
-to measure thickness very accurately
Question 6
Identify the different combustion chamber designs
Correct Answer
Hemispherical (2) Wedge (1)
Question 7
During the intake stroke what is the correct order?
Correct Answer
-the intake valve is opened
-the piston moves downward
-a negative pressure is produced in the cylinder
-the air-fuel mixture is taken in
Page 2 of 17
, Yamaha Motor University
Question 8
How many flywheel revolutions are there in the complete four stroke process?
Correct Answer
2
Question 9
Which valve can handle higher heat?
Correct Answer
exhaust valve
Question 10
-remove carbon residue
-guide lubrication oil into the piston through the oil discharge holes on the surface of
the oil ring and piston during its downward travel
-remove oil from the wall surface during the intake process
-provide a seal between the piston and cylinder during the four strokes
-guide lubrication oil into the piston through the oil discharge holes on the surface of
the oil ring and piston during its upward travel
Correct Answer
-compression ring
-oil ring
-oil ring
-compression ring
-oil ring
Question 11
-four stroke engines
-two stroke engines
Correct Answer
-can operate stable at low rpm, idling RPM can be set at a lower value
-cannot operate stable at low rpm, idling RPM must be set to a higher value
Page 3 of 17
