Tractor Brake Operation; Operator Presence System; Blade Care; Blade Removal - Craftsman EZ3 917.273070 Owner's Manual

TRACTOR
Always o bserve s afety r ules when
performing anymaintenance.
BRAKE OPERATION
Iftractor r equires more than six(6)feet
stopping distance a thigh speed in
highest gear, thenbrake must b ead-
justed. (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
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
Be sure operator presence and interlock
systems are working properly. If your
tractor does not function as described,
repair the problem immediately.
• The engine should not start unless the
clutch/brake pedal is fully depressed
and attachement clutch control is in the
disengaged position.
• 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
attachment clutch is engaged, any
attempt by the operator to leave the
seat should shut off the engine.
• The attachment clutch should never
operate unless operator is in the seal
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
allow access to blades.
2. Remove hex bolt, lock washer and flat
washer securing blade.
3. Install new or resharpened blade with
trailing edge up towards deck as
shown.
2O
IMPORTANT: To ensure proper asse_n-
bly, center hole in blade must align with
star on mandrel assembly.
4. Reassemble hex bolt, lock washer
and flat washer in exact order as
shown.
5, Tighten bolt securely (27-35 Ft, Lbs.
torque).
IMPORTANT: Blade bolt is grade 8 heat
treated.
Mandrel Assembly
Trailing'_d geBlUaPde Center _ F_
,at
Lock Wa:.,_. _. _._,_. _Star
_---Hex Bolt (Grade)*_J
*A Grade 8 heat treated boltcan be identified
by six lines on the bolt head.
TO SHARPEN BLADE
NOTE: We do not recommend sharpen-
ing 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
Center Hole