«:~~'1[R1
CO)[L§
(~
CQl[FJ[E[R\#\
:Jj
(Ql~:
'----.--r-----~-----~
~-
--
I
~
(Sketch 4/3)
:SE);
';
Mo1LR,
THIS
OIL
MEETS
~
THE TEST STANDARDS •
~
Look for
SE
~~
. -
-)
FOR
,~~,AND
MAY BE
in
either
USED WHEREVER THIS
DESIGNATION
IS
place
CALLED FOR.
This is
SE
......
classified oil.
~==':=;."-'
grime
or
grit
in a
short
time and send these
ruinous particles
directly
into
your
engine.
(Photo 4/2) Clean
cooling
fins.
(Photo 4/1)
Cooling
air
flows underneath
co-
vers (clear arrows) and carries heat away from
engine (black arrows).
YOU SHOULD CLEAN DIRT FROM
COOLING FINS
A combination
of
air
cooling
and oil
lubri-
cation systems
controls
engine heat. Vanes on
the engine flywheel
blow
air
through
cooling
fins on the engine to keep engine parts cooled
tQ
safe operating limits as shown in Photo 4/1.
Engine covers and
shrouds
are engineered
to
aid in control
of
this
air
flow. A system
of
oil
passages
throughout
the engine lubricates en-
gine parts and avoids a
buildup
of
excessive
engine heat due
to
friction.
Using the
correct
type
of
clean
oil
and regular
cleaning
of
dirt
and
debris from the engine's
cooling
fins
will
give
you
better, more
efficient
engine service
and
longer
engine life. See Photo
4/2. .
YOU SHOULD
KEEP
THE AIR CLEANER
DIRT
FREE
[ID£@D~
~1f!J@DIf!J~
DIf!J[i"@~~£uD@1f!I
All
Troy-Bilt
Roto
Tiller-Power
Com
posters
use
four
cycle engines. The engine on
your
Troy-Bilt
Tiller
has an oil reservoir
to
lubricate
it
by a splash and spray system. It is very im-
portant
to
make sure that
your
engine gets
enough oil
for
lubrication at all times.
Small air-cooled
engines-such
as
those used
in most gardening equipment,
including
your
Tiller-generate
a
lot
of
heat
during
operation. '
This heat has
to
be taken away
from
the
engine,
otherwise it
could
seriously damage it.
Please remember the
importance
of
your
air
filter. At normal operating speeds,
your
en-
gine consumes
about
8,000 gallons
of
air (at
normal atmospheric pressure)
for
every gallon
of
gasoline
it
burns. .
With a ratio
of
8,000
to
1,
the need
for
clean
air
is obvious. A clean
air
filteJ-or
a new one
.when the old one has become
too
clogged
up
so that it will
no
longer
remove all
of
the
dirt-
.and
tight
fitting, "Uke-new"
air
cleaner gaskets
are essential. Inspect
carefully
for
signs
of
a
dirty
air
cleaner and loose gaskets. Even small
air leaks can
suck
in large
amounts
of
dirt,
39
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