Oklahoma Small Gas Engine Mechanic
Assessment Exam Practice Questions
And Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf.
1. In the Oklahoma Small Gasoline Engine Mechanic Assessment,
which major duty represents the largest percentage of the
assessment content?
A. Perform Administrative Functions
B. Maintain Engine Fuel Systems
C. Maintain Charging and Starting Systems
D. Overhaul Small Gasoline Engines
The overhaul duty represents 27% of the assessment, making it the
largest content area. It includes disassembly, inspection, repair,
assembly, and run-testing of small gasoline engines.
2. What is the primary purpose of cleaning the exterior and cooling
fins of a small gasoline engine?
,A. Increase fuel pressure
B. Increase compression
C. Improve engine cooling efficiency
D. Increase ignition voltage
Accumulated dirt and debris on cooling fins restrict heat transfer.
Cleaning the exterior and fins allows the engine to dissipate heat more
effectively and helps prevent overheating.
3. A customer reports that a small gasoline engine starts normally but
stalls when operated at higher RPM. Inspection reveals a partially
obstructed fuel-tank vent. What is the most likely explanation?
A. Excessive ignition timing
B. The restricted vent prevents proper fuel-tank pressure equalization
C. The governor is producing excessive oil pressure
D. The spark plug is receiving excessive voltage
A restricted fuel-tank vent can prevent air from entering the tank as fuel
leaves it, creating a vacuum that restricts fuel flow and can cause the
engine to stall at higher RPM.
4. What is the primary function of a governor on a small gasoline
engine?
A. Increase compression ratio
B. Increase oil pressure
,C. Control ignition temperature
D. Maintain the selected engine speed
The governor regulates engine speed by responding to changes in
engine load and adjusting the throttle accordingly.
5. What should a technician use when determining the correct
replacement spark plug for a small gasoline engine?
A. Any plug with the same thread diameter
B. A plug from any engine made by the same manufacturer
C. The least expensive plug that physically fits
D. The spark plug recommended by the engine manufacturer
Spark-plug specifications include factors such as heat range, reach,
electrode configuration, and thread dimensions. The manufacturer's
recommendation provides the appropriate combination of
specifications.
6. A starter rope on a recoil starter is visibly frayed. What is the
appropriate corrective action?
A. Lubricate the rope
B. Increase spring tension
C. Stretch the rope before use
D. Replace the starter rope
, A frayed starter rope can fail during engine starting and presents a
reliability and safety concern. A damaged rope should be replaced
rather than repaired by stretching or lubrication.
7. How is internal lubrication generally accomplished in a four-cycle
small gasoline engine?
A. By mixing oil with every quantity of fuel
B. By permanently sealing all lubricated components
C. By coating all bearings with dry lubricant
D. By delivering oil to friction points through a pump or other
lubrication mechanism
Four-cycle engines normally maintain a separate crankcase lubrication
system that supplies oil to bearings, journals, and other friction points.
8. When installing a cylinder head on a small gasoline engine, which
procedure is most appropriate?
A. Tighten all bolts as rapidly as possible
B. Tighten bolts randomly until they feel secure
C. Use an impact wrench at its highest setting
D. Follow the manufacturer's specified tightening sequence and torque
Proper tightening sequence and torque distribute clamping force
correctly and help prevent cylinder-head distortion, gasket failure, and
damaged threads.
Assessment Exam Practice Questions
And Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf.
1. In the Oklahoma Small Gasoline Engine Mechanic Assessment,
which major duty represents the largest percentage of the
assessment content?
A. Perform Administrative Functions
B. Maintain Engine Fuel Systems
C. Maintain Charging and Starting Systems
D. Overhaul Small Gasoline Engines
The overhaul duty represents 27% of the assessment, making it the
largest content area. It includes disassembly, inspection, repair,
assembly, and run-testing of small gasoline engines.
2. What is the primary purpose of cleaning the exterior and cooling
fins of a small gasoline engine?
,A. Increase fuel pressure
B. Increase compression
C. Improve engine cooling efficiency
D. Increase ignition voltage
Accumulated dirt and debris on cooling fins restrict heat transfer.
Cleaning the exterior and fins allows the engine to dissipate heat more
effectively and helps prevent overheating.
3. A customer reports that a small gasoline engine starts normally but
stalls when operated at higher RPM. Inspection reveals a partially
obstructed fuel-tank vent. What is the most likely explanation?
A. Excessive ignition timing
B. The restricted vent prevents proper fuel-tank pressure equalization
C. The governor is producing excessive oil pressure
D. The spark plug is receiving excessive voltage
A restricted fuel-tank vent can prevent air from entering the tank as fuel
leaves it, creating a vacuum that restricts fuel flow and can cause the
engine to stall at higher RPM.
4. What is the primary function of a governor on a small gasoline
engine?
A. Increase compression ratio
B. Increase oil pressure
,C. Control ignition temperature
D. Maintain the selected engine speed
The governor regulates engine speed by responding to changes in
engine load and adjusting the throttle accordingly.
5. What should a technician use when determining the correct
replacement spark plug for a small gasoline engine?
A. Any plug with the same thread diameter
B. A plug from any engine made by the same manufacturer
C. The least expensive plug that physically fits
D. The spark plug recommended by the engine manufacturer
Spark-plug specifications include factors such as heat range, reach,
electrode configuration, and thread dimensions. The manufacturer's
recommendation provides the appropriate combination of
specifications.
6. A starter rope on a recoil starter is visibly frayed. What is the
appropriate corrective action?
A. Lubricate the rope
B. Increase spring tension
C. Stretch the rope before use
D. Replace the starter rope
, A frayed starter rope can fail during engine starting and presents a
reliability and safety concern. A damaged rope should be replaced
rather than repaired by stretching or lubrication.
7. How is internal lubrication generally accomplished in a four-cycle
small gasoline engine?
A. By mixing oil with every quantity of fuel
B. By permanently sealing all lubricated components
C. By coating all bearings with dry lubricant
D. By delivering oil to friction points through a pump or other
lubrication mechanism
Four-cycle engines normally maintain a separate crankcase lubrication
system that supplies oil to bearings, journals, and other friction points.
8. When installing a cylinder head on a small gasoline engine, which
procedure is most appropriate?
A. Tighten all bolts as rapidly as possible
B. Tighten bolts randomly until they feel secure
C. Use an impact wrench at its highest setting
D. Follow the manufacturer's specified tightening sequence and torque
Proper tightening sequence and torque distribute clamping force
correctly and help prevent cylinder-head distortion, gasket failure, and
damaged threads.
