Tires; Blade Care; To Sharpen Blade; Battery Care - Craftsman 917.257730 Owner's Manual

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CUSTOMER
RESPONSJ
ES
TRACTOR
Always observe safety rules when performing any mainte-
nance.
BRAKE
OPERATION
If tractor requires more than six (6) feet stopping distance
at high speed in highest gear, then brake must be adjusted.
(See "TO 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).
o
Keep tires free of gasoline, oi!, 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-
place bent or damaged blades.
BLADE
REMOVAL
(See Fig. 14)
=
Raise mower to highest position to allow access to
btades.
Removehex 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 Ft. 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
TRAILING
EDGE UP
HEXBOLT_
*A GRADE 8 HEAT TREATED
BOLT CAN BE
iDENTIFiED
BYSIXUNE$ONTHEBOLTHEAD.
FIGo 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--
tun! damage to mower and engine.
The blade can be sharpened with a fife or on a grinding
wheel. Do not attempt to sharpen while on the mower.
o
To check blade balance, you will need a 5/8" diameter
steel bolt, pin, or a cone balancer. (When using a cone
balancer, follow the instructions
supplied
with bal-
ancer).
Slide blade on to an unthreaded portion of the steel bolt
or pin and hold the bo!t 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 nait for balancing blade. The lobes of
the center hole may appear to be centered, but are not.
CENTER HOLE
]
518"BOLT
BLADE
OR PIN
fj
FIG. 15
t
BATTERY
(See Fig. !(})
Your tractor has a battery charging system which is suffi-.
cient for normaf use. However, periodic charging of the
battery with an automotive charger will extend its life.
Acid solution tevet in each battery cell should be even
with bottoms of vent wells. Add only distilled odron free
water if necessary.
Do not overfil!.
Keep battery and terminals clean.
Keep battery bolts tight.
Keep vent caps tight and small vent holes in caps open.
Recharge at 6 amperes for I hour.
CUT AWAY VIEW
WELL
BATTERY
CELL AC|D
LEVEL
FIG. 16
17

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