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56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC58
NOTICE: Keep the blade sharp for best mower performance. A dull blade does not cut grass cleanly or mulch properly.
A dull blade can be sharpened, but a blade that is excessively worn, bent, cracked, or otherwise damaged must be
replaced. A worn or damaged blade can break, causing blade pieces to be thrown from the mower. If the blades are found
to be bent, take the lawn mower to an authorized EGO service center for inspection. Never attempt to straighten a bent
blade by heating, or weld a cracked or broken blade.
Sharpening frequency
Sharpening the cutting blade twice during a mowing season is usually sufficient under normal circumstances. Sand
causes the blade to dull quickly; if your lawn has sandy soil, more frequent sharpening may be required.
When sharpening the cutting blade
1. Make sure that the blade remains balanced.
2. Sharpen the cutting blade at the original cutting angle.
3. Sharpen the cutting edges on both ends of the blade, removing an equal amount of material from each end.
Sharpening blade in a vise
1. Remove the blade from the mower (please see section
“REPLACING THE CUTTING BLADE” in this manual).
2. Secure the blade in a vise (Fig. 28a).
3. Wear proper eye protection and gloves and be careful not to
cut yourself.
4. Carefully file the cutting edges of the blade with a fine-tooth
file or sharpening stone, maintaining the original cutting edge
angle.
5. To check the blade balance: clamp a nail or a screwdriver with
a round shank in the horizontal position. Position the blade so
that the nail or round shank of the screwdriver supports the
blade through its center hole. Balance the blade horizontally. If
either end of the blade rotates downward, remove some metal
from the heavy (or lower) end until the blade is balanced. It is
balanced when neither end drops (Fig. 28b).
6. Replace the blade and mount it onto the mower securely
(please see section “REPLACING THE CUTTING BLADE” in
this manual).
WARNING: An unbalanced blade will cause excessive vibration
when rotating at high speeds. It may cause damage to the mower
and could break, causing personal injury.
28a
28b
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