Brake Operation; Tires; Operator Presence System And Reverse Operation System; Blade Care/Removal - Craftsman 917.28936 Operator's Manual

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 serviced. (See "TO CHECK
BRAKE" in the Service and Adjustments
section of this manual).
TIRES
* Maintain proper air pressure in all tires
(See the sides of tires for proper PSI).
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.
CHECK OPERATOR PRESENCE
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.
ROS "ON" Position
Engine "ON" Position
(Normal Operating)
CHECK REVERSE OPERATION (ROS)
SYSTEM
When the engine is running with the ignition
switch in the engine "ON" position 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.
_1, 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 "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
"Star
17