Owner`s manual

MAINTENANCE
I I II
II IIIII
GENERALRECOMMENDATION
• Once a year you should replace the spark plug,
air filter and check blade for wear. A new spark
plug and air filter assuresproper air-fuel mixture
andheips your engine run better and last longer.
= You should check all fasteners and be sure they
are tight.
• Follow the Service Recommendation Schedule on
page 14.
LAWNMOWER
BLADE/BLADEADAPTERCARE
Your lawn mower will work better with a sharp
blade.
CAUTION: DISCONNECTSPARKRUG WIRE
,_ FROMSPARKPLUGAND PLACEWIREWHERE
ITCANNOTCOMEINCONTACTWITHTHE_ARK
PLUG.
TO REMOVE BLADE:
• 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 bolt.
• Protect your hands with gloves and/or wrap
blade with heavy cloth.
• Remove blade bolt by turning counter.clockwise.
Use a 9!16" box or open.end wrench.
• Remove blade and attaching hardware (bolt,
Iockwasher and hardened washer) (See Fig. 10).
NOTE:Remove the blade adapter and check the key
inside hub of blade adapter. The key mustbe in good
condition to work properly. Replace adapter if
damaged.
TO REPLACE BLADE:
• Position the blade adapter on the engine
crankshaft. Be sure key in adapter and key way
in crankshaft are aligned.
• Position blade on to the blade adapter aligning
the two (2) holes in the blade with the raised lugs
on the adapter.
NOTE=Be sure the word TOP (stamped on the blade)
is toward the engine (See Fig. 10).
• Install the blade bolt with the lackwasher and
hardened washer into blade adapter and
crankshaft (See Fig. 10).
FIG. 10
* 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.
• Torque wrenches are available at most Sears
stores and through the catalog.
i1| I i
CAUTION:A LOOSEBLADECANBEDANGEROUS
ANDMAYMAKETHEENGINEHARDTOSTART.
IIII I I
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.
• 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.
• To checkblade 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 nat balanced.
Sharpen the heavy end until the blade is
balanced.
10