Service - Yard Works AutoDrive 60-1827-4 Owner's Manual

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Front Wheels
Each of the front wheel axles is equipped with a grease
fitting. Lubricate with a grease gun after every 25 hours
of tractor operation.
SECTION 13: 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
Hex
Flange Nut
Spindle Assembly
Figure 21
WARNING:
Periodically inspect the blade
adapter and/or spindle for cracks or damage,
especially if you . . strike a foreign object.
Replace immediately if damaged.
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.
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.
22
Rear Wheels
The rear wheels should be removed from the axles
once a season. Lubricate the axles and the rims well
with an all-purpose grease before re-installing them.
• Place a block of wood between the center deck
housing baffle and the cutting blade to act as a
stabilizer. See Figure 21.
• Use a
15/16"
wrench to remove the hex flange nut
that secures the blade to the spindle assembly. See
Figure
21.
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 Figure 22.
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 22.
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.
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.
Worn Blade Edge
Wind Wing
J
Sharpen Edge Evenly
Figure 22
IMPORTANT:
Use a torque wrench to tighten the
blade spindle hex flange nut to between 70 foot-pounds
and 90 foot-pounds.