MTD White Outdoor GT2550 Operator's Manual page 22

strike a foreign object. Replace immediately if
damaged
.
• Remove the deck from beneath the tractor, (refer to
Cutting Deck Removal on page 19) 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 18.
Hex Flange Nut
Spindle Assembly
Figure 18
• Use a 15/16" wrench to remove the hex flange nut
that secures the blade to the spindle assembly. See
Figure 18.
• 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 19.
If the cutting edge of the blade has already
IMPORTANT:
been sharpened to within 5/8" of the wind wing radius,
or if any metal separation is present, replace the
blades. See Figure 19.
• Grind each cutting blade edge equally to maintain
proper blade balance.
WARNING:
A poorly balanced blade will
cause excessive vibration, may damage the
tractor and cause personal injury.
• Test the blade 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.
Use a torque wrench to tighten the blade
IMPORTANT:
spindle hex flange nut to between 70 foot-pounds and
90 foot-pounds.
Wood Block
Worn Blade Edge
Sharpen Edge Evenly
WARNING:
inspecting, always disengage PTO, move drive
pedal into neutral position, set parking brake,
stop engine and remove key to prevent
unintended starting.
Fuses
Two fuses are installed in your tractor's wiring harness
to protect the tractor's electrical system from damage
caused by excessive amperage.
• If the electrical system does not function, or your
tractor's engine will not crank, first check if the fuse
has not blown.
• Locate one fuse behind top of the dash panel on
the support bar.
• Locate the other inside the tractor frame next to the
battery tray and under the seat .
• Pull both fuses out and determine their condition.
Replace if necessary.
Always use a fuse with the same
IMPORTANT:
amperage capacity for replacement.
Battery
The battery is sealed and maintenance-free. Acid levels
cannot be checked. However, some care is required for
long battery life:
• Always keep the battery cables and terminals clean
and free of corrosive build-up.
• After cleaning the battery and terminals, apply a
light coat of petroleum jelly or grease to both
terminals
• Always keep the rubber boot positioned over the
positive terminal to prevent shorting.
If removing the battery, disconnect the
IMPORTANT:
negative (black) wire from its terminal first, followed by
the positive (red) wire. When re-installing the battery,
always connect the positive (red) wire to its terminal
first, followed by negative (black) wire.
22
Blade Separation
Wind Wing
Figure 19
Before servicing, repairing, or