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22
Figure 20
Figure 21
SECTION 10: SERVICE
TIRES
WARNING:
Never exceed the maximum
inflation pressure shown on the sidewall of
the tire.
The recommended operating tire pressure is 10 psi for
the rear tires and 14 psi for the front tires. Refer to the
tire sidewall for exact tire manufacturer’s recommended
or maximum psi. Do not overinflate. Uneven tire
pressure could cause the cutting deck to mow
unevenly.
CUTTING BLADES
WARNING: Be sure to shut the engine off,
remove ignition key, disconnect the spark
plug wire(s) and ground against the engine to
prevent unintended starting before removing
the cutting blade(s) for sharpening or
replacement. Protect your hands by using
heavy gloves or a rag to grasp the cutting
blade.
WARNING: Periodically inspect the blade
adapter and/or spindle for cracks or damage,
especially if you strike a foreign object.
Replace immediately if damaged
.
The blades may be removed as follows.
• Remove the deck from beneath the tractor, (refer to
DECK REMOVAL) then gently flip the deck over to
expose its underside.
• Place a block of wood between the center deck
housing baffle and the cutting blade to act as a
stabilizer. See Figure 22 .
• Use a 15/16" wrench to remove the hex flange nut
that secures the blade to the spindle assembly. See
Figure 22.
To properly sharpen the cutting blades, remove equal
amounts of metal from both ends of the blades along
the cutting edges, parallel to the trailing edge, at a 25°
to 30° angle. See IMPORTANT:.
IMPORTANT: If the cutting edge of the blade has
already been sharpened to within 5/8" of the wind wing
radius, or if any metal separation is present, replace the
blades with new ones. See Figure 24.
It is important that each cutting blade edge be ground
equally to maintain proper blade balance.
A poorly balanced blade will cause excessive vibration
and may cause damage to the tractor and result in
personal injury.
The blade can be tested by balancing it on a round
shaft screwdriver. Grind metal from the heavy side until
it balances evenly.
Figure 22
IMPORTANT: When replacing the blade, be sure to
install the blade with the side of the blade marked
‘‘Bottom’’ (or with a part number stamped in it) facing
the ground when the mower is in the operating position.
IMPORTANT: Use a torque wrench to tighten blade
spindle hex flange nut to between 70 ft-lbs and 90 ft-
lbs.
Rim Grease Fitting
Axle Grease Fitting
Grease Fitting
Spindle Assembly
Hex Flange Nut
Wood Block