Owner`s manual

MAINTENANCE
GENERALRECOMMENDATION
o Once a year you should replace the Spark Plug,
clean or replace Air Filter and check Blade for
wear. A new Spark Plug and Air Filter assures
proper air-fuel mixture and helps your engine run
better and tast longer°
• You should check all fasteners and be sure they
are tight.
° Follow the Service Recommendation Schedule on
page 18_
LAWNMOWER
LOCKWASHER
CRANKSHAFT KEYWAY
BLADEIBLADEADAPTERCARE
FIG. 13
Your lawn mower will work better with a sharp
Blade.
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CAUTION: DISCONNECTSPARKPLUG WIRE
FROMSPARKPLUGAND PLACEWIRE WHERE
ITCANNOTCOMEIN CONTACTWITHTHESPARK
PLUG.
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TO REMOVE BLADE:
• Turn lawn mower on its side° Make sure Air Filter
and carburetor are down.
o Use block of wood between Blade and Lawn
Mower Housing to prevent Blade from turning
when removing the Blade Boll
,, Protect your hands with gloves and!or wrap
Blade with heavy cloth.
o Remove Blade Bolt by turning counter-clockwise°
Use a 9/16" box or open-end wrench_
o Remove Blade and attaching hardware (Bolt,
Lockwasher and Hardened Washer) (See Fig,
13).
NOTE:Remove the Blade Adapter and check the Key
inside Hub of Blade Adapter. The Key must be in
good condition to work properly. Repface Adapter
if damaged.
TO REPLACE BLADE:
o Position the Blade Adapter on the engine
crankshaft. 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 raisedLugs
on the Adapter.
NOTE: Be sure the word TOP (stamped on the Blade)
is toward the engine (See Fig. 13).
• Install the Blade Bolt with the Lockwasher and
Hardened Washer into Blade Adapter and
Crankshaft (See Fig. 13).
° Use block of wood between Blade and Lawn
Mower Housing and tighten the Blade Bolt, turn-
ing clockwise.
• The recommended tightening torque is 35-40 ft
Ibs.
o Torque wrenches are available at most Sears
stores and through the catalog.
................................. i i
CAUTION:ALOOSEBLADECANBEDANGEROUS
ANDMAYMAKETHEENGINEHARDTOSTART.
Use only a Sears authorized replacement Blade to
get the best cutting results.
NOTE: We do not recommend sharpening Blade ° but
if you do, be sure the Blade is balanced.
TO SHARPEN BLADE:
,, 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 nailo tf Btade is balanced, it should remain
in a horizontal positiom If either end of the Blade
moves downward, Blade is not balanced°
Sharpen the heavy end until the Blade is
balanced.
11