Servicing The Mower Blades - Ferris 5900822 Operator's Manual

Regular Maintenance

SERVICING THE MOWER BLADES

Removing the Mower Blade
CAUTION
Avoid injury. Mower blades are sharp.
• Always wear gloves when handling mower
blades or working near blades.
1. To remove the mower blade, wedge a wooden
block between the mower blade and the mower
deck housing to keep the blade from turning and
remove the mower blade mounting bolt with a
15/16" wrench (Figure 24).
Inspecting the Mower Blade
DANGER
Avoid injury. A worn or damaged blade can
break, and a piece of the mower blade could be
thrown into the operator's or bystander's area,
resulting in serious personal injury or death.
• Inspect the mower blade every 25 hours or at
least once a year.
• If the mower blade hits a solid object, stop
the engine immediately and inspect the mower
blade.
• Never weld or straighten bent mower blades.
1. Remove the mower blade from the unit.
2. Inspect the mower blade (Figures 25 & 26).
Discard the mower blade if it has any of the below
conditions:
A.) Has more than .5" (12,7 mm) of the mower
blade metal removed from previous sharpening or
wear (D, Figure 25).
B.) The air lifts are excessively eroded (B & C,
Figure 26) and the notch (C) is .25" (6,35 mm)
deep or greater.
C.) Mower blade is bent or broken.
3. If the cutting edges are not sharp or have nicks,
sharpen the blades. See SHARPENING THE
MOWER BLADES.
Figure 25. Inspecting the Mower Blade Air Lifts
A. New Mower Blade
B. Mower Blade at Wear Limit (A notch begins to form)
C. Mower Blade in Dangerous Condition (Notch measures .25" (6,35 mm) or greater DO NOT USE.
Replace with new mower blade.)
30
A
Figure 24. Loosening the Mower Blade for
Removal
B
C
D
C
Figure 25. Inspecting the Mower Blade Tips
A. Mower Blade Cutting Edge
B. Square Corner
C. Air Lift
D. Wear Measurement - DISCARD Mower Blade If
greater than .5" (12,7 mm)
B
A
A
C
www.ferrisindustries.com