Sears 917.257552 Lawn Mower User Manual


 
BRAKE OPERATION
PO
o
If tractor requires more than six (6) feet stopping distance
at high speed in highest gear, then brake must be adjusted.
(See %'O ADJUST BRAKE" in the Service and Adjust-
ments section of this manual).
IL ES
TIRES
Maintain proper air pressure in ati tires (See "PROD-
UCT SPECIFICATIONS" on page 3 of this manual).
Keep tires free of gasoline, oil, or insect control chemi-
cals which can harm rubber
Avoid stumps, stones, deep ruts, sharp objects and
other hazards that may cause tire damage
To check blade balance, you will need a 5/8" diameter
steel bolt, pin, ora cone batancer. (When using a cone
balancer, follow the instructions supplied with bat-
anGer,)
o Slide blade on to an unthreaded portion of the steel bolt
or pin and hold the bolt or pin parallel with the ground.
If blade is balanced, it should remain in a horizontal
position. If either end of the blade moves downward,
sharpen the heavy end until the blade is balanced.
NOTE: Do not use a nail for' balancing blade. The lobes of
the center hole may appear to be centered, but are not.
BLADE CARE
For best results mower blades must be kept sharp_ Re-
place bent or damaged blades.
BLADE REMOVAL (See Fig. 13)
Raise mower to highest position to allow access to
blades_
Remove hex bolt, lock washer and fiat washer securing
blade
° Install new or resharpened blade with trailing edge up
towards deck as shown.
o Reassemble hex bolt, lock washer and flat washer in
exact order as shown_
o Tighten bolt securely (30-35 Ft. Lbs. torque).
IMPORTANT: BLADE BOLT IS GRADE 8 HEATTREATED
NOTE: We do not recomrnend sharpening blade -but ifyou
do, be sure the blade is balanced°
BLADE
MANDREL
ASSEMBLY
*A GRADE 8 HEAT TREATED BOLT CAN BE
IDENTIFIED BY SIX LINES ON THE BOLT HEAD.
FIG. 13
TO SHARPEN BLADE (See Fig. 14)
Care should be taken to keep the blade balanced_ An
unbalanced blade will cause excessive vibration and even-
tual damage to mower and engine.
° The blade can be sharpened with a rite or on a grinding
wheel Do not attempt to sharpen whiie on the mower.
FIG. 14
BATTERY (See Fig. 15)
Your tractor has a battery charging system which is suffi-
cient for normal use_ However, periodic charging of the
battery with an automotive charger will extend its life
= Acid solution level in each battery celt should be even
with bottoms ofvent wells_ Add only distilled or iron free
water' if necessary. Do not overfill.
° Keep battery and terminals clean.
o Keep battery bolts tight.
= Keep vent caps tight and srnaUvent hotes in caps open.
° Recharge at 6 amperes for t hour,
TO CLEAN BATTERY AND TERMINALS
Corrosion and dirt on the battery and terminals can cause
the battery to "leak" power_
= Remove terminal guard_
o Disconnect BLACK battery cable first then RED bah
tery cable and remove battery from tractor°
o Wash battery with solution of four tablespoons of
baking soda to one gallon of water_ Be careful not to get
the soda solution into the cells.
° Rinse the battery with plain water and dry
o Clean terminals and battery cable ends with wire brush
until brighL
. Coat terminals with grease or petroleum jelly,
° Reinstall battery (See "INSTALL BATTERY" in the
Assembly section of this manual)°
CUT AWAY VIEW / VENTCAP
[ ! VENT WELL
BATTERY
CELL ACID
LEVEL
16 FIG. 15