Sears 917386121 Lawn Mower User Manual


 
CUSTOMER RESPONSIBILITIES
LAWN MOWER
Always observe safety ru_eswhen performing any mainte-
nance., ii!'
TIRES
,' Keep tires tree of gasoline, oil, or insectcontrol chemi-
cals which can harm rubber.
AvOid stumps, stones, deep ruts, sharp objects and
other hazards that _maycause tire damage.
BLADE CARE
For best resu!ts, m0werblade must be kept sharp, Replace
bent or damaged blades.
TO REMOVE BLADE (see Fig° 9)
Disconnect spark plug wire from spark plug and place
wire where it cannot come In contact with spark plug,
Turn lawn mower on its side Make sure air filter and
carburetor ere up,,
Use a wood block between blade and mower housing
to prevent blade from turning when remov ng b ads
bolt,
. Protect your hands with gievaa and/or wrap blade wtth
heavy cloth.
Remo_/eblade belt by turning counter-clockv_ise, Use
a 9/16" box OFopen-end wrench
Remove b_ade and attaching hardware (bolt, Iocl_
washer and hardened washer)
NOTE: Remove the btade adapter and check the key
inside hub of blade adapter. The key must be n good
condition to Work property_ Replace adaptei' ifdamaged.
TO REPLACE BLADE (See Fig. 9)
', Position the blade adapter on the engine crank.shaft,
Be sure key in adapter and keyway tn crankshaft ai'e
aligned
Posliton blade on the blade adapter a#gningthe two (2)
holes in the blade with the raised fugs on the adapter.
Be sure the trailing edge is up toward the engine.,
lnstaltthe blade bol! with the lockwashei" and hardened
washer into blade adapter and crankshaft.
o Use block of wood between blade and lawn mower
housing and lighten the blade bolt, turning clockwise
The recommended tightening torque ls 35-4(_ ft_ 15s
IMPORTANT; BLADE BOLT IS GRADE 8 HEATTREATED
BLADE__ "___
I wAs. . T.A U. :\
LOCK WASHER EDGE BLADE ADAPIER
FIG. 9
NOTE: We donot recommend sharpening blade- but Ifyou
do, be sure the blade is balanced
TO SHARPEN BLADE
Care Shou!d be taken to keep the blade balanced, An
unbalanced blade will cause eventual damage to !awn
mower or engine.
The blade can be sharpened with s fits or on a gdndlng
wheel, Do not attempt to sharpen while on the mower.
To check btade balance, ddve a nailtnIo a beam orwall
Lea_ve aboul one inch of the straight nail exposed.
Place canter ho e of blade over ths head of the na If -
biade is baEanced, tt should remain in a horizonta!
position, t!either end of the blade moves downward,
sharpen the h6avy" endunt I the b ads Sbalahced.
GRASS CATCHER
The grass=catcher may be hosed wilh water, but must
be dry when use'd, ' .
Check your grass c_tohsr 61ten for damage of:deter)o-
ration. Through normat use it will wear, ][ catcher
needs replacing, replace only with a manufacturer
approved replacement catcher Give the lawn mower
model number when ordering ; '
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