Craftsman 917.28903 - Manual (Page 18)

TRACTOR
Always observe safety rules when performing
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 CHECK BRAKE” in the Service and
Adjustments section of this manual).
TIRES
• Maintain proper air pressure in al! tires
(See sides of tire for proper PSI).
• Keep tires free of gasoline, oil, or insect
control chemicafs 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 fuily depressed, and the
attachment clutch control is in the disen­
gaged position.
C H E C K O P E R A T O R P R E S E N C E
SYSTEM
• When the engine is running, any attempt
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 at­
tachment clutch is engaged, any attempt
by the operator to leave the seat should
shut off the engine.
• The attachment clutch should never oper­
ate 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" position and the
attachment clutch is engaged, any attempt
by the operator to go into reverse should
shut off the engine.
ROS "ON" Position Engine "ON" Position
(Normal Operating)
• When the engine is running with the ignition
switch in the ROS "ON" position and the
attachment clutch is engaged, any attempt
by the operator to shift into reverse should
NOT shut off the engine.
BLADE CARE
For best results mower biades must be kept
sharp. Replace bent or damaged blades.
A 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 allow
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 "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).
Mandrel
IMPORTANT: Special blade bolt is heat
treated.
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