YAMAHA MOTOR UNIVERSITY EXAM QUESTIONS AND ACCURATE ANSWERS
2024/2025 | VERIFIED
-The Powerhead
-Outboards
-Steering
-Inboard motors - -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
Oil seal is designed to keep ___ in and prevent _____ or dust from coming in from outside -
oil/water
The bracket is used to: - -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
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/ - Sharp-edged/ -><-
-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 - -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
Identify the different combustion chamber designs - Hemispherical (2) Wedge (1)
During the intake stroke what is the correct order? - -the intake valve is opened
-the piston moves downward
-a negative pressure is produced in the cylinder
-the air-fuel mixture is taken in
How many flywheel revolutions are there in the complete four stroke process? - 2
Which valve can handle higher heat? - exhaust valve
-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 - -compression ring
-oil ring
-oil ring
-compression ring
-oil ring
-four stroke engines
-two stroke engines - -can operate stable at low rpm, idling RPM can be set at a lower value
2024/2025 | VERIFIED
-The Powerhead
-Outboards
-Steering
-Inboard motors - -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
Oil seal is designed to keep ___ in and prevent _____ or dust from coming in from outside -
oil/water
The bracket is used to: - -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
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/ - Sharp-edged/ -><-
-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 - -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
Identify the different combustion chamber designs - Hemispherical (2) Wedge (1)
During the intake stroke what is the correct order? - -the intake valve is opened
-the piston moves downward
-a negative pressure is produced in the cylinder
-the air-fuel mixture is taken in
How many flywheel revolutions are there in the complete four stroke process? - 2
Which valve can handle higher heat? - exhaust valve
-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 - -compression ring
-oil ring
-oil ring
-compression ring
-oil ring
-four stroke engines
-two stroke engines - -can operate stable at low rpm, idling RPM can be set at a lower value
