Brake Operation; Tires; Operator Presence System; To Sharpen Blade - Craftsman 917.273664 Owner's Manual

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 checked and adjusted.
(See "TO ADJUST BRAKE" in the Service
and Adjustments section of this manual).
TIRES
• Maintain proper air pressure in all tires
(See "PRODUCT SPECIFICATIONS"
section of this manual).
• Keep tires free of gasoline, oil, or insect
control chemicals which can harm rub-
ber.
• 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
Be sure that operator presence and
interlock systems are working properly. If
your tractor does not function as described
below, repair the problem immediately.
, The engine should not start unless
the brake pedal is fully depressed and
attachment clutch control is in the disen-
gaged position.
• 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.
BLADE CARE
For best results mower blades must be
kept sharp. Replace bent or damaged
blades.
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 or resharpened blade with
stamped "THIS SiDE UP" facing deck
and mandrel assembly.
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
Trailing Assembly
Edge Up
Blade
Blade Bolt
(Special) Star
Center Hole
TO SHARPEN BLADE
NOTE: We do not recommend sharp-
ening blade - but if you do, be sure the
blade is balanced.
Care should be taken to keep the blade
balanced. An unbalanced blade will cause
excessive vibration and eventual 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.
• 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
balancer.)
NOTE: Do not use a nail for balancing
blade. The lobes of the center hole may
appear to be centered, but are not.
• 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.
,, Blade
5/8 Bolt
or Pin
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.
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