Craftsman 917.28812 Manual Del Operador página 19

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TRACTOR
Always
observe
safety
rules when
per-
forming
any maintenance.
BRAKE
OPERATION
If tractor
requires
more than five (5) feet to
stop at highest
speed
in highest
gear on a
level,
dry concrete
or paved
surface,
then
brake
must be serviced.
(See "TO CHECK
BRAKE"
in the Service
and Adjustments
section
of this manual).
TIRES
• Maintain
proper
air pressure
in all tires
(See PSI on tires).
• Keep tires free of gasoline,
oil, or insect
control
chemicals
which
can harm rubber.
• Avoid
stumps,
stones,
deep ruts, sharp
objects
and other
hazards
that may
cause
tire damage.
NOTE:
To seal tire punctures
and prevent
flat tires due to slow leaks,
tire sealant
may be purchased
from your
local parts
dealer.
Tire sealant
also prevents
tire dry
rot and corrosion.
OPERATOR
PRESENCE
SYSTEM
AND
REVERSE
OPERATION
SYSTEM
(ROS)
Be sure
operator
presence
and
reverse
operation
systems
are working
properly.
If
your tractor
does not function
as described,
repair
the problem
immediately.
• The engine
should
not start unless
the
brake
pedal
is fully depressed,
and the
attachment
clutch
control
is in the disen-
gaged
position.
ROS "ON" Position
Engine "ON" Position
(Normal Operating)
CHECK
OPERATOR
PRESENCE
SYSTEM
• When
the engine
is running,
any at-
tempt
by the operator
to leave the seat
without
first setting
the parking
brake
should
shut off the engine.
• When
the engine
is running
and the
attachment
clutch
is engaged,
any at-
tempt
by the operator
to leave the seat
should
shut off the engine.
• The attachment
clutch
should
never
op-
erate
unless
the operator
is in the seat.
CHECK
REVERSE
OPERATION
(ROS)
SYSTEM
• When
the engine
is running
with the
ignition
switch
in the engine
"ON" posi-
tion and the attachment
clutch
engaged,
any attempt
by the operator
to drive in
reverse
should
shut off the engine.
• When
the engine
is running
with the
ignition
switch
in the ROS "ON" position
and the attachment
clutch
engaged,
any attempt
by the operator
to drive in
reverse
should
NOT shut off the engine.
BLADE
CARE
For best results mower blades must be sharp.
Replace
worn,
bent
or damaged
blades.
_i, CAUTION:
Use only a replacement
blade approved
by the manufacturer
of
your tractor.
Using
a blade not approved
by the manufacturer
of your tractor
is
hazardous,
could
damage
your tractor
and
void your warranty.
BLADE
REMOVAL
1.
Raise
mower
to highest
position
to al-
low access
to blades.
NOTE:
Protect
your hands
with gloves
and/or
wrap
blade with heavy
cloth.
2.
Remove
blade
bolt by turning
counter-
clockwise.
3.
Install
new blade with stamped
"GRASS
SIDE"
facing
the ground.
iMPORTANT:
To ensure
proper
assembly,
center
hole in blade must
align with star
on mandrel
assembly.
4.
Install
and tighten
blade
bolt securely
(45-55
Ft. Lbs. torque).
iMPORTANT:
Special
blade
bolt is heat
treated.
Mandrel
Assembly
Blade
Blade
Center
Hole
BATTERY
Your tractor has a battery charging system
which is sufficient for normal use. How-
ever, periodic charging of the battery with
an automotive
charger will extend its life.
• Keep battery and terminals clean.
• Keep battery bolts tight.
• Keep small vent holes open.
• Recharge
at 6-10 amperes for 1 hour.
19

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