Brake Operation; Blade Removal; To Sharpen Blade; Battey - Craftsman 3One 917.257660 Owner's Manual

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Always observe safety rules when performing any mainte-
nanceo
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CUSTOMER
RESPONSIBILITIES
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TRACTOR
To check blade batancel you will need a 5/8" diameter
steel bolt, pin, or a cone balancer_ (When using a cone
batancer, fdllow the instructions
supplied with bal-
ancer).
BRAKE OPERATION
tf tractor requires more than six (6) feet stopping distance
at high speed in highest gear, then brake must be adjusted_
(See 'q'O ADJUST BRAKE" in the Service and Adjust-
ments section of this manual).
TIRES
-
Maintain proper air pressure in all 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.
BLADE
CARE
For best results mower blades must be kept sharp,, Re-
#ace bent or damaged blades,
BLADE REMOVAL (See Fig. 14)
Raise mower to highest position to allow access to
btadeso
Remove hex bolt, lock washer and flat washer securing
blade°
Install new or resharpened blade with trailing edge up
towards deck as shown.
Reassemble hex bolt, lock washer and flat washer in
exact order as shown.
Tighten bolt securely (30-35 Fto Lbs torque),
IMPORTANT:
BLADE BOLT IS GRADE 8 HEATTREATED.
NOTE: We do not recommend sharpening blade _but if you
do, be sure the blade is balanced.
_'_
MANDREL
BLADE
_,,__..,._
ASSEMBLY
HEX BOLT (GRADE 8)*
..........
;'AGRADE8 HEATTREATEDBOLTCANBE
IDENTIFIED BYSIXLINESONTHE BOLTHEAD,
FIG. 14
TO SHARPEN
BLADE
(See Fig. 15)
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 file or on a grinding
wheel. Do not attempt to sharpen while on the mower.
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 balance&
NOTE: Do not use a nail for balancing blade° The lobes of
the center hole may appear to be centered, but are not.
CENTER HOLE
/
/
518" BOLT
OR PIN
FIG. 15
BATTERY
(See Fig. 16)
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 cell should be even
with bottoms of vent wells. Add only distilled or iron free
water if necessary.
Do not overfill
o
Keep batteryand
terminals c_ean_
Keep battery bolts tight.
Keep vent caps tight and small vent holes in caps open..
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Recharge at 6 amperes for I hour.
TO CLEAN BATTERY AND TERMINALS
Corrosion and dirt on the battery and terminals can cause
the battery to "leak" power°
Open battery box door°
Disconnect BLACK battery cable first then RED bat-
tery cable and remove battery from tractor.
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°
°
Clean terminals and battery cable ends with wire brush
until bright,
Coat terminals with grease or petroleum jelly.
Reinstall battery (See "INSTALL
BATTERY"
in the
Assembly section of this manual).
CUT AWAY
VIEW
VENT CAP
..........
_,,
_
_VENT
i__j_
WELL
BATTERY
CELL ACID
LEVEL
FIG. 16
17

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