
LUBRICATION SYSTEM
Engine Oil
For the engine's lubrication, use a lubricating oil designated for gasoline service. Use a good grade
of
oil
having an
API
specification of
SE,
SF or
SG.
Do
not
use oils designated
OS.
Engine Oil
Viscosity
(SAE Number)
Use oil having a viscosity best suited
to
the atmospheric temperature. Refer
to
the oil viscosity chart below.
TEMPERATURE
ENGINE
OIL
[SAE
IJ
Oil Pressure
("
F"
30
-20
~t
';:4%:HtlJIliJi:;'·-
-20
-10
0
20
ii$"
{-;
,M;\'w'
lilli'
0
10
20
30
40
SO
40
60
80
100 120
iio:h~
-itm~mt
;t:;
..
'itt
}~mt.,&:):l1-
The engine's oil pressure
is
indicated
by
the oil pressure gauge (when equipped with one) or
is
monitored
by the standard oil pressure switch.
During normal operation, the engine's oil pressure
will range between 35 and 55 psi (engine hot).
NOTE: A newly started, cold engine can have an oil pressure reading upwards of
60 to
80
psi. A warmed engine can have an oil pressure reading as
low
as 35 psi. These readings may
also vary depending upon the load that
is
placed on the generator.
Your generator set
is
fitted with an oil pressure sensing switch as standard equipment. Should your engine's
oil pressure
drop
below a safe operating pressure, the sensor will shut the engine OFF to prevent any inter-
nal
damage
to
your generator's engine from occurring by interrupting the
DC
voltage
to
the ignition coil.
Westerbeke Generators
48
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