SECflON
8i
LUBRICATION
SYSTEM
SECTION
CONTENTS
PAGE
DESCRtPI|ON
...._..............................
..................
......... 8_.1
PROTECT
ON 5Y5TEM5
Low
O
I
PressL.e
5w t(h
.. . . . .......
........
S t
Inilial
Startup .........................................._.................
8-l
High
Temperature
Sw tch ..........................................
8-l
Sensinq Low Presrure
...................,..,.........................
8-l
Restarting
rhe Engine
........ .................
.....................
8 1
cHECKtNG
THE ENGTNE
OtL LEVEL ...............................
8_l
cHANGTNGTHEENGTNEOTLANO
FTLTER
...................8,2
Recommended
Oil Iype......................................._......
a-2
otL cooLER ..... ......._........
.. ............................
. ......... 8-3
DESCRIPIION
The
Generac
GTV 990t60
OHV|Vtwins
use a ful
pressure
lubrlcation
system with
an orlfilter The
qerotorrype
oitpump
draws
oilfrom a
screened oil
pickup
in the sump
and
pumps
the
oilth.ough the
oilfilter
The
filtered
oilfows through
an oi
gattey
in
the sump
and
is d stributed
to the maln
bearings, connecting
rod
bearings
and camshaft
bearings
Engine oil
pressure
wilt vary
with oi
vrscosity,
ambient
air temperature
diff erences,
operatlng tem-
peratures
and
engine load. Followthe
oil recorlr
me' rodron
on
paqe
8 2 of this
secton.
Oil Pressure-@70.F(21
"C):
15
-
50
psi
{1.0
-
3.5 Bar)
A
pressure
reliefvalve
limitsthe
maximum oilpressure
inthe
system.
PROT€crION
SYSTEMs
LOW PRESSURE
SW]ICH:
The
engine
is equipped wrth
a
low
oil
pressure
sensor that
closesthe
circuit between
the termina ls when
the oi
pressure
drops
below 8
psi.
lf
one term nalisconnecled
tothe
igniton
kill wire
and the
other termina is
conneced to
ground,
the
engine
willshLtdown
on low
oilpressure.ll the
engineshuts
down by itself
and the fLrel
tank has
enough
gasoline,
check
the engine oil
level.
A
delay
bLrlr inro
tl_e
\l-Jroowr
syste- o.
so-e engile
applications
allows oilprcssureto
buid duing
stading. The
delay
allows lhe
engire lo J,lro.aboLl
I0
econds befo.e
sensr
g
oil
pressure.
f thesystem
senses owoil
pressure
du.ing oper-
aton,
the engine
rhutsdown. The
eng newil
not continueto
run
unti 8
psi
of oil
pressure
s reached.
lf
you
try to renart
the engine within
(five)
5 s€conds
after iishub
down,
lhe engin€
may NOTstart.
The
system n€eds 10
seconds
to reser.
NOIE: lf
you
reshft
engine after
a thutdown
and
have
not
coteded the low
oil
prcssurc,
the
enghte
may .un
for about
10 seconds
as described
above,
and
then it
wil!
H GH TEI,4PERATURE
SWITCH
(OPTONAL):
This
switchS
(not
shown)contacls
close
if the
temperature
shoud exceed
approximately
1400
C
(2840
F),
initating
an
engrne
shutdown. n
cedain applications,
the equlpment
will
automatcally
restaft
and the LED
will
rcset once
the temper
ature
has rcturned
to a safe
operating level.
Figurc
8-1. Engine Protedive
Devices
CHECKING
THE
ENGINE
OIL LEVEL
Th€ o lcapacityofthe
GTV-990,60
OHVtengine
ts
approx_
rmatey
2
quads.
To
check the
engine oit
levet,
proceed
as
I
Remove
the dipstlck
and wipe
it
dry with
a
clean
cloth.
2. Inndllth€
dipstck
comptetety;
then remove
it
again
The
oillevelshould
beatth€ dtpstick,'Fult,
ma*.
tf necessary
add oil
untlthe "Full" mark
is reach€d
DO NOT
F|LL
ABOVE
THE "FULL" MARK
Never operatethe
enginewith
th€ oit tev€l
betow
the
"Add" mark on
the dipstirk. Doingthh
coutd
damage
the €ngine.
8l
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