SMALL ENGINES ICEV ACTUAL EXAM
SCRIPT 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉air cooled engines can be recognized by: -. Answer: 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: -. Answer: flooding is the problem
◉If the engine starts readily but runs only a few minutes, the most
likely cause of this problem is: -. Answer: the fuel flow from the tank
to the carburetor may be slow or irregular
◉most small gas engines have a - type lubrication. Answer: splash
◉fuels stored for a long period of time in the carburetor may
contain: -. Answer: excess gum and varnish
,◉if the lawnmower engine vibrates excessively while running, the
cause may be: -. Answer: 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: -. Answer: 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. Answer: clutch and ratchet
◉weak compression can be a result of : -. Answer: worn rings
◉a spark plug with a soft-tan-powdery deposit is an indication of.
Answer: lead fouling
◉a spark plug with a wet-oily deposit is an indication of: -. Answer:
oil fouling
◉when measuring tappet clearance, one should use: -. Answer: a flat
feeler gauge
,◉for preventive maintenance, the gasoline fuel system should be
emptied and cleaned and refilled with fuel every -. Answer: 100 hrs
of engine operation
◉during normal operating conditions, the small gas engine oil
should be changed every:-. Answer: 50 hrs
◉the air pressure against the air vane tends to - the throttle.
Answer: close
◉the intial adjustment on the Briggs & Stratton flo-jet needle valve
is made by turning it - turn(s) off the seat.. Answer: one and one half
◉oil foam air cleaners should be cleaned with:. Answer: detergent
and water
◉valves on a 4 cycle small gas engine should be replaced when the
orinial margin thickness has worn more than:. Answer: one-half the
thicknesss of the margin
◉increasing governor spring tension:. Answer: 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:. Answer: the valve clearances are
too wide
◉if a seat is too wide:. Answer: carbon will build up
◉when reinstalling the cap to the connecting rod, it is most
important to align the:. Answer: match marks
◉a lot of 4 cycle small gas engines have an oil - attached to the end
of the connecting rod. Answer: dipper
◉the part which connects the piston and the connecting rod is
known as the:. Answer: piston pin
◉which of the following is not a type of valve spring retainer: pin,
ball, slotted disc, split collar. Answer: ball
◉fuel volatility refers to :. Answer: vapor pressure
◉maintenance of the small gas engine includes:. Answer: an oil
change, air filter cleaning or replacement, cleaning and gapping the
spark plug- all of the above
SCRIPT 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉air cooled engines can be recognized by: -. Answer: 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: -. Answer: flooding is the problem
◉If the engine starts readily but runs only a few minutes, the most
likely cause of this problem is: -. Answer: the fuel flow from the tank
to the carburetor may be slow or irregular
◉most small gas engines have a - type lubrication. Answer: splash
◉fuels stored for a long period of time in the carburetor may
contain: -. Answer: excess gum and varnish
,◉if the lawnmower engine vibrates excessively while running, the
cause may be: -. Answer: 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: -. Answer: 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. Answer: clutch and ratchet
◉weak compression can be a result of : -. Answer: worn rings
◉a spark plug with a soft-tan-powdery deposit is an indication of.
Answer: lead fouling
◉a spark plug with a wet-oily deposit is an indication of: -. Answer:
oil fouling
◉when measuring tappet clearance, one should use: -. Answer: a flat
feeler gauge
,◉for preventive maintenance, the gasoline fuel system should be
emptied and cleaned and refilled with fuel every -. Answer: 100 hrs
of engine operation
◉during normal operating conditions, the small gas engine oil
should be changed every:-. Answer: 50 hrs
◉the air pressure against the air vane tends to - the throttle.
Answer: close
◉the intial adjustment on the Briggs & Stratton flo-jet needle valve
is made by turning it - turn(s) off the seat.. Answer: one and one half
◉oil foam air cleaners should be cleaned with:. Answer: detergent
and water
◉valves on a 4 cycle small gas engine should be replaced when the
orinial margin thickness has worn more than:. Answer: one-half the
thicknesss of the margin
◉increasing governor spring tension:. Answer: 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:. Answer: the valve clearances are
too wide
◉if a seat is too wide:. Answer: carbon will build up
◉when reinstalling the cap to the connecting rod, it is most
important to align the:. Answer: match marks
◉a lot of 4 cycle small gas engines have an oil - attached to the end
of the connecting rod. Answer: dipper
◉the part which connects the piston and the connecting rod is
known as the:. Answer: piston pin
◉which of the following is not a type of valve spring retainer: pin,
ball, slotted disc, split collar. Answer: ball
◉fuel volatility refers to :. Answer: vapor pressure
◉maintenance of the small gas engine includes:. Answer: an oil
change, air filter cleaning or replacement, cleaning and gapping the
spark plug- all of the above
