Pony (see Photo 5-9A}-elean (do not oil!) the
outer foam element every 10 hours; clean the
inner paper filter every 10 hours too, and replace
it every 50 hours.
Juni
or
(see Photo 5-9B
}-
replace the single
paper filter element after every 25 hours of en-
gine operation. Do not clean it or oil it.
General Guidelines for serv
icing
all model air
cleaner systems:
•
Before
remov
ing
the
outer
me
tal
air
c
leane
r
cove
r,
always
remove
any
d
ir
t or
grease in the immediate
vic
inity-do
not get
d
irt
or grease or any foreign materials in the
carburetor!
• Inspect
bo
th
the
foam
pre-cleaner
(
if
your
mode
l
comes
with
one) and the paper
filter
for
signs
of excessive wear, tears, or a
loose fit.
• Wash
the
foam
pre-cleaner
on
ly
in a
warm water
I liquid detergent
mixtu
re. Do
not
use kerosene or mineral
spirits
as they could
damage the foam. Then rinse it in clear water
and squeeze it until it is
dry
(don't wring it).
On
ly
the
foam
pre-cleaner
for
the
Econo-
Horse
Tecumseh
eng
ine
should
be
lightly
oiled-squeeze
out
any excess oil. The
Junior
Mode
l
Tecumseh
engine
does
not
have
a
foam pre-cleaner.
• Wipe the inside of the metal air cleaner
cover
and
the
top
of
the
a
ir
cleaner
base
pla
te w
ith
a
clean
rag
to
remove
dirt
and
grime. Do
n't
knock dirt in the carburetor!
•
Carefu
lly
ins
tall
the
pre
-c
leaner
and
paper
fil
ter
inner
element,
and
the
metal
cover
with
its hardware. The fit of these parts
must
be secure and correct. All parts
must
be
reassemb
led as
per
the
original
assembly
.
The performance
of
your
engine is dependent
upon
this
.
NOTE-
In
extremely
dus
ty
or
di
rty
cond
itions,
in-
spect and clean the filter(s) more often.
SPARK PLUG MAINTENANCE
NOTE: Before you remove the spark plug,
brush or blow away debris from the top of
the cylinder head. This prevents debris from
accidentally falling into the spark plug hole.
Every fifty (50) hours of operation, remove the
spark plug and replace or clean it. If cleaning,
only scrape
it-do
not sandblast or wire brush it.
Reset the gap to .030". See engine literature.
IGNITION SYSTEM MAINTENANCE
Your tiller's engine is equipped with electronic
ignition. It does not have either a condenser or
points. Therefore, you do not have to perform
any regular maintenance on this system other
than checking, clea ning, and adjusting (or re-
placing) the spark plug as mentioned previously.
AIR COOLING SYSTEM
MAINTENANCE
Since your tiller operates in such a dusty envi-
ronment, you should frequently check the en-
gine's cooling system for any type of obstruction.
Look between the engine cooling fins and the
engine air shrouds, and under the blower hous-
ing for any trapped debris.
After the engine has cooled, use a screwdriver
or other tool to remove any trapped debris. Do
not remove the blower housing unless it is abso-
lutely necessary.
A WARNING
Failure to keep your engine's cooling sys-
tem clean will cause engine overheating
and will lead to engine damage.
BOLO TINES
Your tiller has bolo tines to more effectively
shred, chop, and bury the organic matter that
you are tilling back into your garden soil.
With use, these tines will become shorter, nar-
rower, and pointed. When badly worn, they won't
be able to turn over as much earth as new tines.
Compare your tines with those in Photo 5
-1
0 if
you should notice a loss of tilling depth or poor
power composting. If your tines have become
too worn, you should replace them.
MODERATE
r-
WEAR
Photo 5-10: Checking Bolo Tines for wear.
37
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