Gravely 424 - Air Intake System; Lubrication

AIR INTAKE
SYSTEM
The
importance
of
maintaining an air
cleaner
in
proper
condition
can
not be
overemphasized!
Dirt induced
through
improperly installed,
improperly
serviced or
inadequate dry
type elements,
wears out more
engines
than
does loag hours
of operation. Even
a small amount of dirt will wear out
a set of
piston
rings in a
ferv hours.
Furthermore,
otrrerating
with
a clogged
element
causes
a richer Juel
mixture which
can lead to formation of
harmful
sludge
deposits. Always
cover
carburetor or air
horn
when air
cleaner is removed for servicing
Dry type air
cleaner elements
should
be replaced
after
100 to 200 hours
if engine is normally operated
under
good
clean air conditions
-
service and
replace element more frequently
under
extremely dusty or
dirty
conditions,
Dry type
elements should be
cleaned after
each
100 hours
of operation
or
more often under
dusty
condi-
tions
-
remove
element and tap
lightly
on a fat surface to remove
loose
surface dirt. Replace element
if dirt
does not drop off easily. Do
not wash
dry
elements in any Iiquid
or attempt
to blow
dfut ofi with
air hose as
this will
puncture
the fflter element.
Carefully
handle new
element
-
do not use if
gasket
surfaces are
bent
or trvisted.
Not only must
the
right
fflter element be
used but it
must
be
properly
installed
to
prevent
unffltered
air
from
entering
engine.
Check
the
following
when
iastalling new
element.
l.
Back
plate
must be
securely
tightened to
carburetor. Replace
back
plate
if bent or
cracked.
2. Gasket
surfaces
of
element
must be
{at
against back
plate
and
cover
to seal
efiectively.
3' Washer
must be in
place
between
cover and wing nut
to seal and
prevent
unffltered
air from entering
through
hole
in
cover.
If washer
is not used,
make sure wing
nut
(special)
properly
seals area around
cover hole.
4.
Wing
nut
must
be ffnger
tight.
LUBRICATION
Engine
Capacity
-
5
pints
of API classi0cation
SC oil
Summer
-
SAE 30
Winter
-
SAE 5W20
Check
oil
level daily in
engine. Maintain at full mark.
Do not overffll.
Change
engine
oil every
25
operating
hours
or oftener
under dusty conditions. Drain
plug
is
located
on
the right
hand side of the engine base.
Transmission
Capacity
-
5 U. S.
Quarts
Use SAE 90W EP all
purpose gear
lubricant for
year
round
use,
Check
lubricant level
daily. Maintain
at full mark.
Do
not
overffll,
Drain
plug
is
lowest
bolt on L.
H. axle
housing.
4
Figure
I
-
Dry
Type Air
Cleqner