OPERATION
PRE-STARTING
Preparations
for
the initial and each additional star-
ting operation should include careful checks
of
the
Oil,
fuel, cooling,'and electrical systems.
The
cylinder
air
housing
door
should
be closed with all air
sh
muds
in
place.
[
WARNING
~
Check exhaust system frequently forJeaks.
, ' " ! Be sure poisonous exhaust gases are piped
10
outside. Inhalation
of
exhaust gases can resulUn serious personal
injury. '
Before generator set is put in operation, check all
components
for
mechanical security.
If
an
abnormal
condition, defective part,
or
operating
difficulty
is
detected" repair
or
service
as
requ i red. The generator
set should be,kept free
of
dust, dirt, and spilled oil
or
fuel.
Be
sure proper operating procedure is followed.
CRANKCASE OIL
Use a good
quality
heavy
duty
detergent oil
that
meets the API (American Petroleum Institute) service
designations MS,
MS/DG,SE
orSE/CC.
Oil shou
Id
be
labeled
as
having passed the MS Sequence Tests
(also known as the ASTMG-IV Sequence Tests) and
the MIL-L-2104B Tests. Recommended
SAE,
oil
numbers
for
expected ambient temperatures are
as
follows:
Above 32° F (0° C)
........................
SAE 30
O°F
to
32°F (-1S0C
to
O°C)
....
SAE 10W
or
5W-30
Below 0° F
(-1S0
C)
...................
SAE 5W-30
When adding oil between oil changes,
it
is preferable
to
use the same brandas various brands
of
oil may
not
be
compatible when mixed together.
Do not use service
OS
oil. Do not mix brands
or
grades. Refer
to
Maintenance section
for
recommend-
ed oil changes.
PRE-HEATER
OPTIONAL
AIR
CLEANER
~~
,~
! '
RECOMMENDED FUEL
Use clean, fresh regular grade, automotive gasoline.
For new engines, most satisfactory results could be
obtained by using non leaded gasoline. For older
engines
that
have previously used leaded gasoline,
heads must be taken
offand
all lead depOSits removed
from engine before switching to nonleaded gasoline. ,
~
If
lead deposits are
not
r~moved
from engine
~
before switching from leaded
10
non leaded
gasoline, pre-ignition could
occur
causing$eYeredamage to the
engine.
~
To avoid fire and
,explos,
ion
hazards, never fill
~
the tank when the engine is running. Leave
space in tank for expansion to avoid'overflow when fuelwarms up
to engine running temperature.
INITIAL
START
Check the engine to make sure it has been filled with
oil and fuel. Cylinder air housing
door
must be closed.
If
engine fails
to
start
at
first attempt, rust
inhibitor
oil
used at the factory may have fouled the spark plugs
remove, clean
in
suitable solvent,
dry
thoroughly
and
install. Heavy exhaust smoke when
theengine
is first
started is normal and is caused by the
inhibitor
oil.
Carburetor
Air
Preheater: The carburetor combustion
air
preheater (Figure 13) directs engine warmed I;lirto
the carburetor when required to prevent carburetor
icing. The
air
inlet is automatically selected
by
the
Vernatherm (thermostatic element) which operates a
shutter in the induction airstream. The shutter is fully
closed at
SO°F
(27°
C),.
is half open
at90°F
(32°C),
and is fully open to ambient air at 100° F
(3S0
C).
8265-1
PRESSURE COOLED
VACUFLO
COOLED
FIGURE 13. CARBURETOR PRE-HEATER
14
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