29
Servicing the Mower Blades
Removing the Mower Blades
1. To remove the mower blade, use a 1” wrench
on the flats of the spindle shaft and remove the
mower blade mounting bolt with a 15/16” wrench
(Figure 21).
2. If there are no flats on the spindle shaft, wedge a
wooden block between the mower blade and the
mower deck housing to keep the mower blade
from turning.
Inspecting the Mower Blades
1. Remove the mower blade from the unit. See
Removing the Blade.
2. Inspect the mower blade (Figures 22 & 23).
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 23).
B.) The air lifts are excessively eroded (B & C,
Figure 23) 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
.
Regular Maintenance
Figure 21. Loosening the Mower Blade for Removal
Figure 22. 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)
A
B
C
Figure 23. 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 (If notch
measures .25” (6,35 mm) or greater DO NOT USE
Replace with new 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.
CAUTION
Avoid injury! Mower blades are sharp.
• Always wear gloves when handling mower
blades or working near blades.
A
A
B
C
C
D
Not
for
Reproduction
