Servicing The Mower Blades - Ferris 400 Series Operator's Manual

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Servicing the Mower Blades

Removing the Mower Blades
CAUTION
Laceration hazard
Mower blades are sharp.
Always wear gloves when handling, or working near, mower
blades.
1. Use a block of wood to prevent the mower blade from
turning as shown in Figure 27.
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2. Using a wrench, remove the bolt securing the blade to the
spindle.
Inspecting the Mower Blades
DANGER
Thrown objects hazard
Avoid injury: a worn or damaged mower blade can break
and a piece of the blade could be thrown into the operator's
area or bystander's area resulting in serious personal injury
or death.
• Inspect the mower blade every 25 hours or at least
once per year.
• If the mower blade hits a solid object, stop the engine
immediately and inspect the mower blades.
• Never weld or straighten bent mower blades.
1. Remove the mower blade from the unit. See Removing
the Mower Blades.
2. Inspect the mower blade (Figures 28 and 29). Discard the
mower blade if it has any of the following conditions:
• More than .5" (12,7 mm) of the mower blade metal
has been removed from previous sharpening or wear
(A, Figure 28)
• The air lifts are excessively eroded (A, Figure 29) and
the notch (B) is .25" (6,35 mm) deep or greater.
• The mower blade is broken or bent.
28
29
3. If the cutting edges are not sharp or have nicks, sharpen
the blades. See Sharpening the Mower Blades.
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