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Figure 7-9
4. 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°- 30°
angle. Always grind each cutting blade edge equally to
maintain proper blade balance. See Figure 7-10.
CAUTION: If the cutting edge of the blade has
previously been sharpened, or if any metal
separation is present, replace the blades with new
ones.
WARNING! A poorly balanced blade will cause
excessive vibration, may cause damage to the
tractor and/or result in personal injury.
Figure 7-10
5. Test the blade’s balance using a blade balancer. Grind
metal from the heavy side until it balances evenly.
NOTE: 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.
CAUTION: Use a torque wrench to tighten the
blade spindle hex flange nut to between 70 ft-lbs
and 90 ft-lbs.
Battery
CALIFORNIA PROPOSITION 65 WARNING:
Battery posts, terminals, and related accessories
contain lead and lead compounds, chemicals known
to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
CAUTION: If removing the battery, disconnect the
NEGATIVE (Black) wire from its terminal first,
followed by the POSITIVE (Red) wire. When
reinstalling the battery, always connect the POSITIVE
(Red) wire its terminal first, followed by the
NEGATIVE (Black) wire.
Jump Starting
WARNING! Never jump start a damaged or frozen
battery. Be certain the vehicles do not touch and
ignitions are off. Do not allow cable clamps to touch.
1. Connect the positive (+) cable to positive (+) post of your
tractor’s discharged battery.
2. Connect the other end of the cable to the positive (+) post
of the jumper battery.
3. Connect the negative (–) cable to the other post of the
jumper battery.
4. Make the final connection on the engine block of the
tractor, away from the battery. Attach to an unpainted part
to assure a good connection.
CAUTION: If the jumper battery is installed on a
vehicle (i.e. car, truck), do NOT start the vehicle’s
engine when jump starting your tractor.
5. Start the tractor (as instructed in the Operation section of
this manual).
6. Set the tractor’s parking brake before removing the jumper
cables, in reverse order of connection.
27Section 7 — Service