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LAWN MOWER
Always
observe
safety
rules when
per-
forming
any maintenance.
TIRES
• Keep tires free of gasoline,
oil, or insect
control
chemicals
which
can harm
rub-
ber.
• Avoid
stumps,
stones,
deep
ruts, sharp
objects
and other
hazards
that may
cause
tire damage.
DRIVE
WHEELS
Check
front drive wheels
each
time before
you mow to be sure they move freely.
The wheels
not turning
freely
means
trash,
grass
cuttings,
etc. are in the drive
wheel
area and must
be cleaned
to free
drive
wheels.
If necessary
to clean
the drive wheels,
be
sure to clean
both front wheels.
1.
Remove
hubcaps
(if equipped),
lock-
nuts and washers.
2.
Remove
wheels
from wheel
adjusters.
3.
Remove
any trash
or grass cuttings
from
inside
the dust cover,
pinion
and/
or drive wheel
gear teeth.
4.
Put wheels
back
in place.
NOTE:
If after cleaning,
the drive wheels
do not turn freely,
contact
a Sears
or other
qualified
service
center.
BLADE
CARE
For best results,
mower
blade
must
be
kept sharp.
Replace
a bent
or damaged
blade.
A CAUTION:
Use only a replacement
blade
approved
by the manufacturer
of
your
mower.
Using
a blade
not approved
by the manufacturer
of your
mower
is
hazardous,
could
damage
your
mower
and void your
warranty.
TO REMOVE
BLADE
1.
Disconnect
spark
plug wire from
spark
plug and place
wire where
it cannot
come
in contact
with plug.
2.
Turn lawn mower
on its side. Make
sure air filter and carburetor
are up.
3.
Use a wood
block
between
blade
and
mower
housing
to prevent
blade
from
turning
when
removing
blade
bolt.
NOTE:
Protect
your hands
with gloves
and/or
wrap
blade
with heavy cloth.
4.
Remove
blade
bolt by turning
counter-
clockwise.
5.
Remove
blade
and attaching
hardware
(bolt, lock washer,
hardened
washer).
NOTE:
Remove
the blade
adapter
and check
the key inside
hub of blade
adapter.
The key must
be in good
condi-
tion to work properly.
Replace
adapter
if
damaged.
TO REPLACE
BLADE
1.
Position
the blade
adapter
on the
engine
crankshaft.
Be sure key in
adapter
and crankshaft
keyway
are
aligned.
2.
Position
blade on the blade
adapter.
IMPORTANT:
To ensure
proper
assembly,
center
hole in blade
must
align with star
on blade
adapter.
3.
Be sure trailing
edge of blade
(op-
posite
sharp
edge)
is up toward
the
engine.
4.
Install
the blade
bolt with the lock
washer
and hardened
washer
into
blade
adapter
and crankshaft.
5.
Use block
of wood
between
blade and
lawn mower
housing
and tighten
the
blade
bolt, turning
clockwise.
• The recommended
tightening
torque
is
35-40
ft. Ibs.
IMPORTANT:
Blade
bolt is heat treated.
If bolt needs
replacing,
replace
only with
approved
bolt shown
in the Repair
Parts
section
of this manual.
Blade adapter
Key
Crankshaft
_eyway
Lockwasher
Blade
Blade
bolt
Hardened
washer
retainer
TO SHARPEN
BLADE
NOTE:
We do not recommend
sharp-
ening
blade-
but if you do, be sure the
blade
is balanced.
An unbalanced
blade
will cause
eventual
damage
to lawn
mower
or engine.
• The blade
can be sharpened
with a file
or on a grinding
wheel.
Do not attempt
to sharpen
while
on the mower.
• To check
blade
balance,
you will need
a 5/8" diameter
steel bolt, pin, or a cone
balancer.
(When
using
a cone
balancer,
follow
the instructions
supplied
with it.)
NOTE:
Do not use a nail for balancing
blade.
The lobes
of the center
hole may
appear
to be centered,
but are not.
14
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