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GENERAL R I COMMENDAI' ON
Once a year you should
replace
the Spark
Plug,
Air Filter and check Blade for wear° A new Spark
Plug and Air Filter assures proper
air-fuel
mix-
ture and helps your
engine
run better
and last
longer.
o You should check all fasteners
and be sure they
are tighL
o
Follow the Service Recommendation
Schedule on
page
21.
BLADE/BLADE ADAPTER CARE
Your
lawn
mower
will
work
better
with
a sharp
Blade.
CAUTION: DISCONNE(1 SPARI( PLUG WIRE
FROM SPARE PLUGAND PLACEWIRE WHERE
iT CANNOT€O_E IN CONTACT W ITH THESPARE
PLUG DO HOT A1TEhIPTTO ADJUSTHEIGHT
OF CUT UNLESS THE LAWN h_lOWiEIS SITTING
UPRIGHT. PERSONAL INJURY _AY RESULT.
,,,llllll ......
hi, i, i
TO REMOVE
BLADE:
o
Turn lawn mower' on its side Make sure Air Filter
and Carburetor
are up
,_ Use block
of wood
between
Blade
and
Lawn
Mower
Housing
to prevent
Blade
from turning
when removing
the Blade
Boll
o
Protect
your
hands
with
gloves
and/or
wrap
Blade with heavy
cloth_
Remove Blade Bolt by turning counter-clockwise
Use a 9/t6"
box or opemend
wrench_
o
Remove
Blade
and attaching
hardware
(Bolt,
Lockwasher
and
Hardened
Washer)
(See Fig
NOTI_: Remove the Blade Adapter
and check the Key
inside
hub of Blade Adapter_
The Key must be in
good condition
to work
properly.
Replace Adapter
if damaged_
TO REPLACE
BLADE:
o
Position
the
Blade
Adapter
on
the
Engine
Crankshafl_
Be sure Key in Adapter
and Keyway
in Crankshaft
are aligned.
o
Position Blade on to the Blade Adapter
aligning
the two (2) holes in the Blade with the raised lugs
on the Adapter°
!'_0TE: Be sure the word TOP (stamped
on the Blade)
,s toward
the engine
(See Fig_ 18)0
o
Install
the Blade
Bolt with the Lockwasher
and
Hardened
Washer
into
Blade
Adapter
and
Crankshaft
(See Fig° 18).
CRANKSHAFT
&
_/:"___
/
BLAC'E
ADAPTER
/"
DETAIL
O WASHt
KEY
8LADE
ADAPTER
_-._e'/BLADE
BOLT
_KSHAFT
LOCKWASHER
CRANKSHAFT
KEYWAY
.//
LC
_
FIG. 18
o
Use block
of wood
between
Blade
and Lawn
Mower
Housing
and tighten
the Blade Bolt, turn-
ing clockwise..
o The recommended
tightening
torque
is 35-40
ft_
Ibs_
o Torque
wrenches
are available
at most Sears
stores and through
the catalog.
AND MAY MAKE THE ENGINE HARD TO START. I
I
....................
Use only a Sears authorized
replacement
Btade to
get the best cutting
results.
NOTE: We do not recommend
sharpening
Blade - but
if you do, be sure the Blade is balance&
TO SHARPEN BLADE:
o The Blade can be sharpened with a file or on a
grinding wheel_ Do not attempt to sharpen while
on the lawn mower_
o Care should be taken to keep the Blade balanc-
ed. An unbalanced
Blade will cause excessive
vibration when running and eventual damage to
lawn mower or engine_
o To check Blade balance, drive a nail into a beam
or wall_ Leave about one inch of the straight nail
exposed. Place center' hole of Blade over the head
of the nail. If Blade is balanced, it should remain
in a horizontal position_ If either end of the Blade
moves
downward,
Blade
is not balanced.
Sharpen
the heavy
end until
the Blade
balanced.
14
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