SMALL ENGINES EXAM-ACTUAL EXAM |LATEST UPDATE 2025 COMPLETE
QUESTIONS WITH CORRECT DETAILED AND VERIFIED ANSWERS| MOSTLY
TESTED QUESTIONS -RATED 100% CORRECT!!GUARANTEED PASS!ALREADY
GRADED A+
When a small gas engine refuses to start, the first check should be: - - (answers)level of the fuel
in the tank
air cooled engines can be recognized by: - - (answers)the cooling fins on the cylinder
you have removed the spark plug and it is wet with gasoline, the engine won't start and no other
checks have been made. It can be assumed that: - - (answers)flooding is the problem
If the engine starts readily but runs only a few minutes, the most likely cause of this problem is: -
- (answers)the fuel flow from the tank to the carburetor may be slow or irregular
most small gas engines have a - type lubrication - (answers)splash
fuels stored for a long period of time in the carburetor may contain: - - (answers)excess gum and
varnish
if the lawnmower engine vibrates excessively while running, the cause may be: - - (answers)bent
crankshaft/ blade out-of-balance/ bent blade--any of the above
you check the ignition system with the ignition tester and there is no spark. the most likely cause
of this problem is: - - (answers)sheared flywheel key/ grounde/bad coil/ shorted stop switch--any
of the above
which one of the following is not a type of manual starter on a small gas engine- rope-wind,
clutch and ratchet, rope-rewind, or wind-up - (answers)clutch and ratchet
weak compression can be a result of : - - (answers)worn rings
a spark plug with a soft-tan-powdery deposit is an indication of - (answers)lead fouling
a spark plug with a wet-oily deposit is an indication of: - - (answers)oil fouling
when measuring tappet clearance, one should use: - - (answers)a flat feeler gauge
for preventive maintenance, the gasoline fuel system should be emptied and cleaned and refilled
with fuel every - - (answers)100 hrs of engine operation
,during normal operating conditions, the small gas engine oil should be changed every:- -
(answers)50 hrs
the air pressure against the air vane tends to - the throttle - (answers)close
the intial adjustment on the Briggs & Stratton flo-jet needle valve is made by turning it - turn(s)
off the seat. - (answers)one and one half
oil foam air cleaners should be cleaned with: - (answers)detergent and water
valves on a 4 cycle small gas engine should be replaced when the orinial margin thickness has
worn more than: - (answers)one-half the thicknesss of the margin
increasing governor spring tension: - (answers)increases the speed of the engine
the engine that you are working on tends to kick back when you try to start it the problem could
be: - (answers)the valve clearances are too wide
if a seat is too wide: - (answers)carbon will build up
when reinstalling the cap to the connecting rod, it is most important to align the: -
(answers)match marks
a lot of 4 cycle small gas engines have an oil - attached to the end of the connecting rod -
(answers)dipper
the part which connects the piston and the connecting rod is known as the: - (answers)piston pin
which of the following is not a type of valve spring retainer: pin, ball, slotted disc, split collar -
(answers)ball
fuel volatility refers to : - (answers)vapor pressure
maintenance of the small gas engine includes: - (answers)an oil change, air filter cleaning or
replacement, cleaning and gapping the spark plug- all of the above
Briggs & Stratton engine 126332 uses a - governor to control engine speed -
(answers)mechanical
T/F cleaning the air cooling systems is a routine maintenance item - (answers)true
T/F When storing a small gas engine, it si recommended to set the piston at top dead center of
the exhaust stroke - (answers)false
,T/F when storing an engine over a season, darin the crankcase oil and refill with new oil of the
recommended type and viscosity - (answers)true
the mating surface of the valve face is: - (answers)the valve seat
the middle ring on the 4 cycle gas engine piston is called a/an: - (answers)compression and/or
scrapper
during the compression stroke on the 4 cycle engine what happens to the intake valve and the
piston: - (answers)the intake valve closes and the piston moves upward
the exhaust valve opens and the upward movement of the piston forces burned gasses out of the
cylinder on the: - (answers)exhaust stroke
the perforated ring on a small gas engine piston is the: - (answers)oil ring
a clogged crankcase breather will cause: - (answers)leaking oil seals and ruptured gaskets
the purpose of the cylinder wall crosshatch pattern is to: - (answers)control lubrication of the
cylinder and aid in seating new rings
valve tappet clearance is needed to : - (answers)allow valves to expand
the greatest amount of cylinder wear is at the: - (answers)middle one-third of the cylinder wall
the 4 cycle gas engine intake valve is cooled by: - (answers)incoming air fuel misxture
which of the following is not a part of the valve: head, margin, seat, or face - (answers)seat
end clearance on rings is necessary so that: - (answers)the piston rings will have room to expand
when it become hot AND the ring can exert pressure on the cylinder wall
after cylinders are bored or honed they should be cleaned with: - (answers)EITHER kerosene OR
soapy water
the top ring on a piston in a small gas engine is called a/an: - (answers)compression ring
the average operating temperature of the intake valve is approximately - degrees Fahrenheit -
(answers)1200
Valve sticking can be cause by: - (answers)lead in the fuel, gum in the fuel, varnish from the
fuel- all of theabove
, the terms flo jet, pulsa jet, and vacu jet are used to describe the three types of: -
(answers)carburetors
the angle the valve face and seat on a Briggs & Stratton engine are ground is generally: -
(answers)45 and 30 degrees
the compression ratio tells us about the engine's: - (answers)efficiency
the cam lobes: are timesd with the camshaft gear so the valves are lifted at the correct time,
contour determines the speed of the valve opening, or contour determines the length of time the
valves are open - (answers)all of the above
which of these is not a reason for valve failure: burned, dished, carboned, or necked -
(answers)carboned
the first one or two numbers of the model number system indicates: - (answers)cubic inch
displacement
if there is a difference in the size of the valve head, the intake valve is - than the exhaust valve -
(answers)larger
valves have to seal well enough to stand pressures up to - pounds per squre inch - (answers)500
PSI
the function of the crankcase breather is to remove - from the crankcase - (answers)air
for the valves to open at the proper time the - marks must be aligned - (answers)timing
the compression release is designed to: - (answers)allow easier starting
T/ F valves are held in the closed position by valve guides - (answers)false
T/F weak compression may be caused by a leaky head gasket - (answers)true
T/F weak compression could not be caused by worn rings - (answers)false
T/F cylinders can be resized with a hone - (answers)true
which part of the magneto ignition system converts low voltage into high voltages -
(answers)coil
QUESTIONS WITH CORRECT DETAILED AND VERIFIED ANSWERS| MOSTLY
TESTED QUESTIONS -RATED 100% CORRECT!!GUARANTEED PASS!ALREADY
GRADED A+
When a small gas engine refuses to start, the first check should be: - - (answers)level of the fuel
in the tank
air cooled engines can be recognized by: - - (answers)the cooling fins on the cylinder
you have removed the spark plug and it is wet with gasoline, the engine won't start and no other
checks have been made. It can be assumed that: - - (answers)flooding is the problem
If the engine starts readily but runs only a few minutes, the most likely cause of this problem is: -
- (answers)the fuel flow from the tank to the carburetor may be slow or irregular
most small gas engines have a - type lubrication - (answers)splash
fuels stored for a long period of time in the carburetor may contain: - - (answers)excess gum and
varnish
if the lawnmower engine vibrates excessively while running, the cause may be: - - (answers)bent
crankshaft/ blade out-of-balance/ bent blade--any of the above
you check the ignition system with the ignition tester and there is no spark. the most likely cause
of this problem is: - - (answers)sheared flywheel key/ grounde/bad coil/ shorted stop switch--any
of the above
which one of the following is not a type of manual starter on a small gas engine- rope-wind,
clutch and ratchet, rope-rewind, or wind-up - (answers)clutch and ratchet
weak compression can be a result of : - - (answers)worn rings
a spark plug with a soft-tan-powdery deposit is an indication of - (answers)lead fouling
a spark plug with a wet-oily deposit is an indication of: - - (answers)oil fouling
when measuring tappet clearance, one should use: - - (answers)a flat feeler gauge
for preventive maintenance, the gasoline fuel system should be emptied and cleaned and refilled
with fuel every - - (answers)100 hrs of engine operation
,during normal operating conditions, the small gas engine oil should be changed every:- -
(answers)50 hrs
the air pressure against the air vane tends to - the throttle - (answers)close
the intial adjustment on the Briggs & Stratton flo-jet needle valve is made by turning it - turn(s)
off the seat. - (answers)one and one half
oil foam air cleaners should be cleaned with: - (answers)detergent and water
valves on a 4 cycle small gas engine should be replaced when the orinial margin thickness has
worn more than: - (answers)one-half the thicknesss of the margin
increasing governor spring tension: - (answers)increases the speed of the engine
the engine that you are working on tends to kick back when you try to start it the problem could
be: - (answers)the valve clearances are too wide
if a seat is too wide: - (answers)carbon will build up
when reinstalling the cap to the connecting rod, it is most important to align the: -
(answers)match marks
a lot of 4 cycle small gas engines have an oil - attached to the end of the connecting rod -
(answers)dipper
the part which connects the piston and the connecting rod is known as the: - (answers)piston pin
which of the following is not a type of valve spring retainer: pin, ball, slotted disc, split collar -
(answers)ball
fuel volatility refers to : - (answers)vapor pressure
maintenance of the small gas engine includes: - (answers)an oil change, air filter cleaning or
replacement, cleaning and gapping the spark plug- all of the above
Briggs & Stratton engine 126332 uses a - governor to control engine speed -
(answers)mechanical
T/F cleaning the air cooling systems is a routine maintenance item - (answers)true
T/F When storing a small gas engine, it si recommended to set the piston at top dead center of
the exhaust stroke - (answers)false
,T/F when storing an engine over a season, darin the crankcase oil and refill with new oil of the
recommended type and viscosity - (answers)true
the mating surface of the valve face is: - (answers)the valve seat
the middle ring on the 4 cycle gas engine piston is called a/an: - (answers)compression and/or
scrapper
during the compression stroke on the 4 cycle engine what happens to the intake valve and the
piston: - (answers)the intake valve closes and the piston moves upward
the exhaust valve opens and the upward movement of the piston forces burned gasses out of the
cylinder on the: - (answers)exhaust stroke
the perforated ring on a small gas engine piston is the: - (answers)oil ring
a clogged crankcase breather will cause: - (answers)leaking oil seals and ruptured gaskets
the purpose of the cylinder wall crosshatch pattern is to: - (answers)control lubrication of the
cylinder and aid in seating new rings
valve tappet clearance is needed to : - (answers)allow valves to expand
the greatest amount of cylinder wear is at the: - (answers)middle one-third of the cylinder wall
the 4 cycle gas engine intake valve is cooled by: - (answers)incoming air fuel misxture
which of the following is not a part of the valve: head, margin, seat, or face - (answers)seat
end clearance on rings is necessary so that: - (answers)the piston rings will have room to expand
when it become hot AND the ring can exert pressure on the cylinder wall
after cylinders are bored or honed they should be cleaned with: - (answers)EITHER kerosene OR
soapy water
the top ring on a piston in a small gas engine is called a/an: - (answers)compression ring
the average operating temperature of the intake valve is approximately - degrees Fahrenheit -
(answers)1200
Valve sticking can be cause by: - (answers)lead in the fuel, gum in the fuel, varnish from the
fuel- all of theabove
, the terms flo jet, pulsa jet, and vacu jet are used to describe the three types of: -
(answers)carburetors
the angle the valve face and seat on a Briggs & Stratton engine are ground is generally: -
(answers)45 and 30 degrees
the compression ratio tells us about the engine's: - (answers)efficiency
the cam lobes: are timesd with the camshaft gear so the valves are lifted at the correct time,
contour determines the speed of the valve opening, or contour determines the length of time the
valves are open - (answers)all of the above
which of these is not a reason for valve failure: burned, dished, carboned, or necked -
(answers)carboned
the first one or two numbers of the model number system indicates: - (answers)cubic inch
displacement
if there is a difference in the size of the valve head, the intake valve is - than the exhaust valve -
(answers)larger
valves have to seal well enough to stand pressures up to - pounds per squre inch - (answers)500
PSI
the function of the crankcase breather is to remove - from the crankcase - (answers)air
for the valves to open at the proper time the - marks must be aligned - (answers)timing
the compression release is designed to: - (answers)allow easier starting
T/ F valves are held in the closed position by valve guides - (answers)false
T/F weak compression may be caused by a leaky head gasket - (answers)true
T/F weak compression could not be caused by worn rings - (answers)false
T/F cylinders can be resized with a hone - (answers)true
which part of the magneto ignition system converts low voltage into high voltages -
(answers)coil
