Master Service Technician CH. 1-7
A 55 gal. Drum of engine oil needs to be moved from the extent of the parking lot to the
returned of a pick out up truck. The bed of the truck is 3' above the flat surface of the car
parking zone. The drum of oil weighs 500 lb. Primarily based on the equation for paintings
(W=FxD), 1500ft/lb of work will accomplish the task. - ANS-Technician B
a wreck away grab is an electric pointing out gadget component that permits the stater motor
to spin quicker than the flywheel - ANS-False
A Briggs & Stratton engine equipped with a Vacu-Jet carburetor must be adjusted with the
fuel tank full. - ANS-False
A Cobalite hard faced exhaust valve should always be resurfaced during valve service to
ensure lengthy lifestyles. - ANS-False
A common purpose of insufficient valve rotation on a fuel air-cooled engine is: - ANS-lack of
clearance among the valve stem and the valve manual, improperly positioned valve spring,
immoderate combustion deposits.
A absolutely high pace air bleed can generally motive an engine to run very wealthy beneath
load. - ANS-False
A cylinder leakdown tester is used by a small engine carrier technician to decide the sealing
skills of an engine. The most crucial issue of successful and correct checking out is to: -
ANS-Listen carefully to all outside orifices for audible leaks
A dry bulb and a moist bulb primer system work along side the choke plate offer east cold
starting of the engine - ANS-True
A horizontal shaft engine presenting a carburetor with a pilot jet reveals the subsequent
signs and symptoms:
Hard to start cold
Hunts and surges below stress
Runs nicely at idle and top no-load speeds - ANS-Technician A: ays that the reason of the
symptoms is a partially blocked constant major jet orifice
A landscape contractor complains that his sixteen HP fifty two" industrial walk behind rotary
mower does now not pass thru excessive grass rapid enough. He asks that a better
horsepower engine be hooked up so he can mow the grass at a higher rate of velocity. -
ANS-Technician A: putting in a 20HP Vanguard V-dual engine might clear up the trouble
A new engine on a clear water pump operated at an elevation of 6000' will enjoy a few
diploma of performance troubles. Which of the subsequent is maximum accurate as to the
, nature of the predicted performance trouble - ANS-decreased horsepower output/engine
running richer than regular in any respect speeds and cargo
A newly overhauled engine well-knownshows excessive white/blue smoke at idle top no-load
speeds and at the same time as underneath load. Which of the subsequent could purpose
this? - ANS-An incorrectly set up wiper ring
A small arc welder the usage of an engine ready with a mechanical governor machine is
introduced in for restore. The purchaser criticism is that although the engine reaches the
appropriate top no-load speed, while the user starts to weld, the engine rpm decreases to
the factor that the welder can no longer produce the proper amperage to carry out the
welding venture to hand. The first-class of the weld could be very questionable because the
output of the welder isn't reliable. Aside from the abrupt decrease in engine rpm below load,
the engine operates with none issues. - ANS-Technician B: to correct this trouble, set up a
lighter rated spring and perform the regular constant speed governor adjustment tactics
A zener diode desires a minimum of 12 Vin the battery if you want to characteristic efficiently
- ANS-False
after an engine has finished one complete working cycle, how many stages has the
crankshaft turned around? - ANS-720 degress
After servicing the carburetor, a technician is acting a compete governor machine
adjustment. The governor machine on the engine has two springs: the governor idle spring
and the norma number one governor spring, which of the 2 speed settings is adjusted first? -
ANS-The govern idle velocity
all briggs & Stratton -cylinder engines use a single ignition armature with two spark plug
wires - ANS-True
All engines with a pneumatic or mechanical governor system experience a few diploma of
rpm lower while located under slight to heavy masses - ANS-Technician A and Technician B
All other things being identical (compression ratio, extent of gas, air, etc), can the downward
pressure or strain on a piston be extended by the use of a domed piston head configuration?
- ANS-No
An engine turns into geared up with an internally vented carburetor will show off ___ form
the exhaust gadget if the air purifier will become more than 70% clogged - ANS-No smoke
An engine famous searching and surging while operating t idle and pinnacle no-load speeds.
The looking and surging is not obvious while the engine is operated below slight to heavy
hundreds. Which of the subsequent is the maximum probable reason of these symptoms -
ANS-A blocked idle circuit air bleed
An engine is added in for carrier with the purchaser complaint of loss of energy, high oil
consumption, and repeated blown head gaskets. Upon disassembly, all of the piston ring
A 55 gal. Drum of engine oil needs to be moved from the extent of the parking lot to the
returned of a pick out up truck. The bed of the truck is 3' above the flat surface of the car
parking zone. The drum of oil weighs 500 lb. Primarily based on the equation for paintings
(W=FxD), 1500ft/lb of work will accomplish the task. - ANS-Technician B
a wreck away grab is an electric pointing out gadget component that permits the stater motor
to spin quicker than the flywheel - ANS-False
A Briggs & Stratton engine equipped with a Vacu-Jet carburetor must be adjusted with the
fuel tank full. - ANS-False
A Cobalite hard faced exhaust valve should always be resurfaced during valve service to
ensure lengthy lifestyles. - ANS-False
A common purpose of insufficient valve rotation on a fuel air-cooled engine is: - ANS-lack of
clearance among the valve stem and the valve manual, improperly positioned valve spring,
immoderate combustion deposits.
A absolutely high pace air bleed can generally motive an engine to run very wealthy beneath
load. - ANS-False
A cylinder leakdown tester is used by a small engine carrier technician to decide the sealing
skills of an engine. The most crucial issue of successful and correct checking out is to: -
ANS-Listen carefully to all outside orifices for audible leaks
A dry bulb and a moist bulb primer system work along side the choke plate offer east cold
starting of the engine - ANS-True
A horizontal shaft engine presenting a carburetor with a pilot jet reveals the subsequent
signs and symptoms:
Hard to start cold
Hunts and surges below stress
Runs nicely at idle and top no-load speeds - ANS-Technician A: ays that the reason of the
symptoms is a partially blocked constant major jet orifice
A landscape contractor complains that his sixteen HP fifty two" industrial walk behind rotary
mower does now not pass thru excessive grass rapid enough. He asks that a better
horsepower engine be hooked up so he can mow the grass at a higher rate of velocity. -
ANS-Technician A: putting in a 20HP Vanguard V-dual engine might clear up the trouble
A new engine on a clear water pump operated at an elevation of 6000' will enjoy a few
diploma of performance troubles. Which of the subsequent is maximum accurate as to the
, nature of the predicted performance trouble - ANS-decreased horsepower output/engine
running richer than regular in any respect speeds and cargo
A newly overhauled engine well-knownshows excessive white/blue smoke at idle top no-load
speeds and at the same time as underneath load. Which of the subsequent could purpose
this? - ANS-An incorrectly set up wiper ring
A small arc welder the usage of an engine ready with a mechanical governor machine is
introduced in for restore. The purchaser criticism is that although the engine reaches the
appropriate top no-load speed, while the user starts to weld, the engine rpm decreases to
the factor that the welder can no longer produce the proper amperage to carry out the
welding venture to hand. The first-class of the weld could be very questionable because the
output of the welder isn't reliable. Aside from the abrupt decrease in engine rpm below load,
the engine operates with none issues. - ANS-Technician B: to correct this trouble, set up a
lighter rated spring and perform the regular constant speed governor adjustment tactics
A zener diode desires a minimum of 12 Vin the battery if you want to characteristic efficiently
- ANS-False
after an engine has finished one complete working cycle, how many stages has the
crankshaft turned around? - ANS-720 degress
After servicing the carburetor, a technician is acting a compete governor machine
adjustment. The governor machine on the engine has two springs: the governor idle spring
and the norma number one governor spring, which of the 2 speed settings is adjusted first? -
ANS-The govern idle velocity
all briggs & Stratton -cylinder engines use a single ignition armature with two spark plug
wires - ANS-True
All engines with a pneumatic or mechanical governor system experience a few diploma of
rpm lower while located under slight to heavy masses - ANS-Technician A and Technician B
All other things being identical (compression ratio, extent of gas, air, etc), can the downward
pressure or strain on a piston be extended by the use of a domed piston head configuration?
- ANS-No
An engine turns into geared up with an internally vented carburetor will show off ___ form
the exhaust gadget if the air purifier will become more than 70% clogged - ANS-No smoke
An engine famous searching and surging while operating t idle and pinnacle no-load speeds.
The looking and surging is not obvious while the engine is operated below slight to heavy
hundreds. Which of the subsequent is the maximum probable reason of these symptoms -
ANS-A blocked idle circuit air bleed
An engine is added in for carrier with the purchaser complaint of loss of energy, high oil
consumption, and repeated blown head gaskets. Upon disassembly, all of the piston ring
